Installation for destruction. Interesting and useful information about building materials and technologies. The human factor has not been canceled

Candidates of technical Sciences A.K. POSTOEV, V.A. ZIMNITSKY, V.A. BRYZGALOV (problem laboratory of electrohydraulic effect, Leningrad)

Reconstruction of existing workshops and enterprises requires a large amount of work to destroy old concrete and reinforced concrete foundations and other building structures. These works are usually performed using manual labor, since the use of explosives and various impact mechanisms is limited by the specifics of the work and safety requirements.

In the problem laboratory of the electrohydraulic effect, four models of electrohydraulic installations of the “Vulcan” type were developed, which increased the productivity of work on the destruction of structures. The operation of the installations is based on the use of high pressures that arise in the liquid during a high-voltage pulsed discharge between two electrodes. The technology for performing work on electrohydraulic destruction includes following operations: drilling holes with a diameter of 25 mm, depth 300-700 mm; installation of an electrohydraulic fuse in the hole; implementation of a high-voltage discharge between the fuse electrodes and destruction of structures; dismantling the destroyed structure.

Advantages of electrohydraulic destruction in a small radius danger zone(10 m), the absence of scattering of fragments and the release of toxic gases, as well as the ability to control the destructive force.

For studying technical capabilities Electro-hydraulic installations for splitting stones were used in the destruction of concrete and reinforced concrete objects in various conditions.

In 1972 at Leningradsky brick factory in an operating workshop, in close proximity to a working conveyor, it was dismantled reinforced concrete foundation brick firing kilns with a volume of 30 m3 using an experimental electro-hydraulic installation “Vulcan”, consisting of two blocks measuring 1500X X 800X 800 mm. The work was carried out by a team of four people. The foundation was destroyed in the following sequence: in the body of the foundation, at a distance of 200-250 mm from each other, using PR-20L pneumatic hammer drills, holes with a diameter of 25 mm were drilled to a depth of 300-700 mm; water was poured into them, a wire fuse was inserted, and a high-voltage pulse discharge of the capacitor bank was carried out. Under the influence of the resulting pressure, concrete pieces break off, and in the presence of steel reinforcement, cracks appear. Using pneumatic jackhammers, the reinforcement was exposed along the cracks and burned with an electric arc. The pulse energy of the electro-hydraulic installation “Vulcan” determines the maximum volume of a piece of concrete broken off in one pulse, up to 0.2 m3. The depth of cracks in reinforced concrete reaches 500-900 mm.

The electro-hydraulic installation “Vulcan-1”, consisting of five blocks measuring 800X700X940 mm, is designed for work in cramped conditions of underground tunnels with a diameter of more than 2 m and other rooms with high humidity. It was used to dismantle concrete caisson lintels in an underground tunnel and destroy frozen soil during excavation. When dismantling caisson lintels, the time required to complete the work is reduced by 3 times compared to dismantling with pneumatic jackhammers. -Destruction of frozen soil during tunnel excavation hydraulic installation"Vulcan-1" is ineffective, since it requires additional time to remove the installation from the face after each series of discharges and special tool for high-speed drilling of holes with a diameter of 25 mm in frozen soil.

The greatest efficiency was achieved when destroying old foundations with the Vulcan-2 electro-hydraulic installation at the Leningrad Gypsum Marble Products Plant and the Pulp and Paper Mill in Zugdidi with a volume of 220 and 540 m3, respectively. The work was carried out by complex teams consisting of 2 blasters servicing the Vulcan-2 installation and 4-8 people drilling holes and dismantling the structure after a series of electro-hydraulic splits.

The use of reusable electro-hydraulic fuses increased the average productivity of demolition and cleaning of foundations for each team member for 1 hour of shift time to 0.15-0.25 m3/h of reinforced concrete and 0.6 m3/h of unreinforced concrete.

In all cases of using electro-hydraulic installations of the “Vulcan” type for the destruction of concrete and reinforced concrete objects, the time required to complete the work has been reduced by 1.5-3 times and the work of workers has been significantly facilitated.

The economic effect, taking into account the early commissioning of new equipment, reached 2.5-70.7 thousand rubles.

UZT-100 is designed for trenchless replacement of pipelines by destroying the old pipe while simultaneously laying a new one.

Since the beginning of the 90s, trenchless technologies for laying and replacing pipelines have been actively used in the Russian Federation. The length of urban water supply and sewerage systems alone, which have long served their standard service life, in Russia is about 300,000 km, and more than 25% of them are in urgent need of replacement. Practice has shown that the method of trenchless pipe replacement using the destruction method is the most popular. The reason for this, in addition to the benefits of trenchless technology itself, is the following. The state of emergency networks is sometimes such that removing worn-out pipes from the ground and disposing of them is not only unprofitable, but also extremely costly.

Advantages of trenchless pipeline rehabilitation technology using destruction method

the possibility of increasing the diameter of the newly laid pipe;

• minimum amount of excavation work;
• minimal costs for removing soil and remains of the old pipeline;
• minimum amount of work to restore the soil surface;
• the ability to work in densely built-up conditions without destroying expensive road surfaces;
• reducing the time required to lay a new pipeline;
• reducing the cost of laying a new pipeline by 3 times due to the small number of maintenance personnel and the speed of work; low use of earth-moving and cargo equipment.

Unfortunately, domestic complexes for destroying old pipes while simultaneously laying new ones are still poorly represented on the Russian market, although such installations, as we have already said, are in great demand. And this niche is quickly filled by foreign manufacturers, offering high-value products.

The installation was created primarily for Russian consumers, therefore, it took into account and implemented optimal parameters, which made it possible not only to obtain a competitive installation for trenchless replacement of pipelines using the destruction method, but also to offer it to customers at a lower price than that of competitors and foreign manufacturers.

BSS - 2(quick connect rod)

The installation is designed for trenchless destruction of any types of pipes - metal, cast iron, asbestos-cement, ceramic or concrete - with a diameter from 100 to 450 mm with the simultaneous laying of pipes of equal or larger diameter by one standard size (from 150 to 500 mm). Products made of any material - from metal to plastic - with any connection method can also be used as new pipes. The maximum length of continuous pipeline replacement along a straight route is 150 m.

Features of UZT-100

rehabilitation of pipes with a diameter of 100 to 450 mm;

• continuous laying of pipelines up to 150 m long;
• destruction of pipes made of any materials - metal, cast iron, ceramics, asbestos cement, concrete, etc.;
• laying pipes with any type of connections and from any materials;
• the operating pressure in the installation’s hydraulic system is 25 MPa, which made it possible to achieve high power of the actuator while simultaneously reducing the weight and size characteristics of the installation;
• high-quality hydraulic components from the Swiss company Bieri and the Japanese company Yuken, which can significantly increase the service life of the equipment;
• quick-connect rods of our own design;
• destructive knives.

Supply and equipment of a plant for trenchless destruction of pipes with simultaneous laying of a new pipeline UZT-100

• power point;
• hydraulic pumping station with remote control;
• thrust plate, spacer, set of adapters;
• set of expanders with collet clamps for pipes;
• set of knives;
• rods (in the required quantity);
• rod containers;
• lifting mechanism for mounting rods (optional).

Regulatory Compliance

The manufacturer guarantees compliance with the level harmful factors, such as noise, vibration, amount of emissions from internal combustion engines, parameters specified in GOST 12.1.003, GOST 12.1.007, GOST 12.1.012.

The complex has a climatic modification of UHL, placement category I and group of operating conditions 3 in accordance with GOST 15150-90. That is, it is perfect for Russians weather conditions. Can work at temperatures environment from -30 to +40°С, which is big advantage if emergency replacement of pipelines is necessary in winter.

Protection metal parts against aging and corrosion is produced in accordance with GOST 9.014 and GOST 9.032.

The installation fully complies with the requirements of ergonomics and industrial aesthetics - GOST 20.39.108. The location of control devices is in accordance with GOST 21752 and GOST 21753, which provides personnel with free access and ease of operation.

Components of UZT-100

The destructive force is created by hydraulic cylinders, direct destruction is carried out by knives attached to the head. The head, in turn, is attached to the rod. Removal of pipe fragments from the route is carried out by an expander equipped with collet clamps to capture the first link of the newly laid pipeline.

Hydraulic cylinders are driven by a pumping station with electric motor or a Hatz diesel engine. Control – remote control.

Power point

The power plant is a rigid welded frame with two hydraulic cylinders attached to it. This ensures the constancy of the location of the cylinder axes relative to the axis of the pipe being destroyed.

The developed force is 100 tf, which, as practice shows, is enough to destroy the most complex sections of pipelines (couplings, etc.).

The frame is equipped with sling eyelets for gripping and moving by lifting mechanisms.

Thrust plate

To prevent the installation from shifting due to resistance arising during operation, the complex includes a metal thrust plate. When equipping the starting pit, it is installed close to the concrete front wall strictly vertically and connected to the power plant. The reverse force is transmitted to the slab, and then to the wall of the pit and is distributed evenly over large area. As a result, not only is the installation prevented from shifting towards the pipe being destroyed, but also the vibration of the installation is reduced.

Spacer

The spacer is used on final stage work and is a welded structure placed between the thrust and power unit when removing knives and expanders from the pipe.

Adapter

It is a device that allows you to attach knives to the bar different sizes for destruction of pipes of various diameters. The adapter has the ability to rotate around an axis, which eliminates twisting of the rods.

Knives

For destruction of pipes made of steel, cast iron, reinforced concrete, etc. Self-contained knives with one blade and five support plates are used. The knives are made adjustable in diameter in three ranges: from 150 to 250 mm; from 250 to 350 mm; from 350 to 450 mm. The knives have the ability to rotate around the longitudinal axis.

To destroy pipes made of fragile materials (asbestos cement, ceramics), expanders with knives on a conical surface and collet clamps are used.

Extenders

Steel cone-shaped expanders are designed to remove pipe fragments from the route, pressing them into surrounding soil and, if necessary, increasing the diameter of the channel. To lay a new pipeline, the expanders are equipped with collet clamps, with which the first section of the pipeline is secured.

Expanders, as well as knives, are supplied in a set sufficient for laying all standard sizes of pipes with diameters from 150 to 500 mm.

Barbells

Quick-connect rods (QSC) of large working length are another feature of the UZT-100 complex for trenchless replacement of pipelines. To install the rods, no key is required - the “key-groove” type fastening allows you to easily connect the BSBs to each other, and the principle of installation/disassembly only at an angle of 90° helps prevent spontaneous disconnection.

The length of one rod is 2000 mm, working length is 1780 mm, diameter is 100 mm. The weight of one rod is 74 kg, so we recommend using a lifting mechanism for installation.

The need to use lifting equipment is compensated by an increase in the speed of penetration due to fewer operations to connect the rods to each other. Moreover, connection and disconnection occurs without stopping the main process.

Another undeniable advantage of BSS over threaded rods is their reliability. Due to the high forces that the threaded connections of conventional rods have to withstand, the threads often become jammed. That is, difficulties arise with dismantling these rods. Consequently, there are delays in work, and sometimes even material losses when it is necessary to replace damaged rods with new ones.

The rods are supplied as needed for maximum length penetration quantity. To store them, a special container is used, which is attached to the installation during operation. The container design includes fastenings that prevent spontaneous displacement of the rods during transportation.

Pumping station

The hydraulic pump station is designed to supply working fluid under high pressure to hydraulic cylinders power plant for trenchless replacement of pipelines UZT-100.

The range of acceptable ambient temperatures for operation is -40 ... +40°С. The drive can be either a Hatz diesel engine with an electric starter or an electric motor.

The station is connected to the cylinders by high-pressure hoses 6 m long with quick-release connections.

The design provides the ability to visually monitor the level of the working fluid and its temperature, as well as adjust the response pressure safety valve. For ease of use, the surface of the installation contains the necessary information on station maintenance.

A special feature of Rushydravlik hydraulic stations is the possibility of using additional hydraulic equipment. For example, you can install a submersible pump for pumping water out of a pit, a hydraulic jackhammer, etc.

The pumping station has remote control hydraulic motor control with electromagnetic control. The remote control supply voltage is 24V.

The remote control and 15-meter cable are waterproof.

Specifications:

POWER POINT		HYDRO PLANT
options	meaning	options	meaning
Developed force, tf:		engine's type	diesel, electric
when pulling	100	Engine power, kW	40
when pushing	50	Maximum pressure of the main pump, mPa	25
Hydraulic cylinder rod stroke, mm	680	Maximum pump performance, l/min	50
Working length of the rod, mm	1780	Overall dimensions, mm:
Rod weight, kg	74	length	500
Overall dimensions, mm:		width	750
length	2300	height	1500
width	780	Weight, kg	250
height	780	Pipe pulling speed -	1.3 m/min
Weight without rods, kg	1650	Rod pushing speed -	1.7 m/min

LIKBEZ

IN general case when using an expander with built-in knives, the required force to destroy pipes can be calculated using the formula

Trenchless replacement of pipelines using destruction method using the UZT-100 complex

All work must be carried out in accordance with the instructions supplied with the installation for trenchless pipe replacement UZT-100, which provides recommendations for arranging workplaces, debugging equipment and carrying out work. Here we will briefly outline the sequence and principle of action.

pits

Pit pits are installed at the initial and final sections of a straight pipeline. The working pit must have minimum dimensions 3000 x 1500 mm. The front wall and bottom are leveled and reinforced, while the wall must be perpendicular to the axis of the pipe being destroyed, and the bottom, accordingly, parallel to it.

The second pit is equipped only to the extent that it is convenient during operation and ensures an uninterrupted supply of new pipes. If HDPE pipe is supplied from a reel, the pit must be constructed with a slope of the non-working wall.

Preparing the complex for trenchless laying UZT-100 for operation

The power unit, as well as the thrust plate, are lowered into the working pit using lifting equipment. The thrust plate is mounted to working wall pit. The compliance of the rod trajectory with the axis of the pipeline route is checked and adjusted.

The pumping station is installed on the ground surface, outside the pit. The hydraulic cylinders of the power plant are connected to the pumping station with high-pressure hoses using quick-release couplings.

Implementation of trenchless pipeline replacement technology using destruction method

The first rod, equipped with a guide rod with a bullet-shaped end, is inserted into the old pipe, without stopping work, the second is attached to the first rod, and so on. The procedure is repeated until the first rod reaches the final pit.

The guide rod is removed from the rod. An adapter, a knife and an expander are attached to it in series. The edge of the pipe or the first section of the future pipeline is mounted in the collet clamp of the expander, depending on the type of new pipes.

After which the installation is switched on for pulling. The knife destroys the old pipe, the expander removes its remains from the route, pressing them into the surrounding soil. If the new pipeline is not a seamless HDPE pipe, then the second section is connected to the first section, etc.

As the pipeline is pulled into the working pit, a rod comes out. There are two possible options here:

1. Only this area is subject to remediation

In this case, the rods are separated, dismantled and placed in a container. After the first pipe section enters the pit, the installation stops working, all equipment is lifted out of the pit and transported to another facility. The new section of the pipeline is connected to the old one, the functionality is checked, the visible section of the pipe and the pit are backfilled in accordance with the rules.

2. The section being replaced is part of a pipeline in need of rehabilitation

With this option, the working well is intermediate; both walls are reinforced. Simultaneously with the destruction of the old pipe and the pulling of a new one into the working area, the rods are inserted into the next section of the old pipeline. After the new pipe enters the working pit, the installation is turned around, the thrust plate is mounted to the other wall of the pit, the equipment with the new pipes and the lifting mechanism are moved to the next well. The demolition and laying procedure is repeated in a new area.

The installation for trenchless pipe laying of the UBPT "Horizon" series is intended for the construction of new and replacement of worn-out underground... 17345

SITE INFORMATION BLOG:

Products. Equipment and Tools:

• For repair and maintenance of railway transport
  • For RAILWAY TRACKS
    • 073_TRACK PUMPING STATION (HSP) (hydraulic oil station, hydraulic compressor, hydraulic station) (for: repair, maintenance of railway tracks, rails)
    • 074_RAIL CUTTING MACHINE (RRG) (hydraulic) (for cutting volumetrically hardened, non-heat-strengthened rails P50 P65 P75 with a cutting disc)
    • 075_RAIL DRILLING MACHINE (SRG) (hydraulic) (for drilling holes for butt bolts in railway rails, including volume-hardened ones; for chamfering)
    • 076_TRACK NUTWRIGHT (GP) (hydraulic) (for tightening and unscrewing butt, embedded and terminal nuts, track screws in railway rails)
    • 077_SLEEP TAMPER (SHPG) (hydraulic) (for tamping the ballast compaction during the current maintenance of the railway track, driving spikes, compacting soil)
    • 078_NUT CUTTERS (GR) (hydraulic) (for easy and safe removal of damaged, rusted nuts; without damaging the threads of the bolt or stud)
    • 079_INSTALLATION for REPLACING UNDER-RAIL and UNTIL RUBBER PADS on SLEEPERS UNDER RAILS (UZPR) (for repair and routine maintenance of the railway track)
    • 080_TRACK JACKS (JA) (hydraulic) (for safe, quick lifting of rail and sleeper grids and turnouts during repairs and track maintenance)
    • 081_TRACK STRAIGHTENER (RGA) (hydraulic) (for straightening rail and sleeper grids and turnouts on wooden and reinforced concrete sleepers)
    • 082_MANUAL WINCH for INSTALLING and REMOVAL OF SLEEPERS (LR) (for wooden and reinforced concrete sleepers during the repair of railway tracks and turnouts)
    • 083_TRACK EXPANDER (RRA) (hydraulic) (to restore damaged gaps between rails by longitudinally extending rails, strands)
    • 084_RELSOGIB (RG) (hydraulic) (for bending rails at the place of their laying; eliminates the discrepancy between the radius of the tip and the required radius of laying)
    • 085_RELSOGIB for TURNOUTS (RGSP) (hydraulic) (for bending rails at the installation site; eliminates the discrepancy between the radius of the point and the required radius of installation)
    • 086_EMERGENCY HYDRAULIC PUMPING STATIONS (AGS) (oil station, hydraulic compressor, hydraulic station) (for: repair, maintenance of railway tracks, rails)
    • 087_SELF-PROPELLED EMERGENCY REPAIR MODULE (SAPM) (for emergency work on railway tracks, cutting and drilling, grinding of rail heads)
  • For CAR FACILITY (car assembly shop)
    • 011_INSTALLATION for CHANGE OF DRAFT GEAR (USPA) (hydraulic) (for: maintenance, repair of carriage facilities of Russian Railways, Ministry of Railways)
    • 012_KIT for REMOVAL OF DRAFT GEAR (KSPA-45) (hydraulic) (for: depot, railway transport, Russian Railways cars)
    • 001_INSTALLATION for straightening FREIGHT CAR HATCHES (UCL) (for: depot, railway transport, maintenance and repair of rolling stock)
    • 002_DEVICE FOR STRAIGHTENING EDGES OF HATCH OPENINGS FOR GONDOLA CARS (UPKPL-P) (for: depot, railway transport, maintenance and repair of rolling stock)
    • 003_INSTALLATION OF REMOVING - INSTALLATION OF HATCH COVERS FOR GONDOLA CAR (USPL) (for: depot, railway transport, maintenance and repair of rolling stock)
    • 004_INSTALLATION OF REGENERATION OF HATCHES OF GONDOLA CARS (UPLP) (for: depot, railway transport, maintenance and repair of rolling stock of Russian Railways, Ministry of Railways)
    • 015_INSTALLATION for DISASSEMBLY OF INSTALLATION OF FREIGHT CAR DROP PIECES complete with DROP CLIPPER (USPP) (for: repair of rolling stock)
    • 016_INSTALLATION for CORRECTING DEFORMATIONS OF THE UPPER FRAME OF GONDOLA CARS during DEPOT REPAIR (UP) (for: repair of cars, Russian Railways rolling stock)
    • 017_HYDRAULIC LIFT (PPG, PGE 0.5-6, PGES 0.5-11) (mobile, non-self-propelled) (for: people with tools and materials)
    • 021_MOBILE POST OF HYDROFIED TOOLS for REPAIR OF FREIGHT CARS in DEPOT conditions (PRM-D) (for: railway transport Russian Railways, Ministry of Railways)
    • 199_INSTALLATION for ADJUSTING THE ROOF OF A HOPPER CAR (UPK-VH) (for: depot, railway transport, maintenance and repair of rolling stock of Russian Railways, Ministry of Railways)
    • JACKING UNITS FOR WARRIORS AND TANKS
  • For WARRIOR FACILITIES (wheel-roller shop)
    • 010_INSTALLATION for DISASSEMBLY OF AXLE NUT M110 of wheel pairs of cars (UDG-M110) (hydraulic) (for: depot, railway transport, cars)
    • 019_INSTALLATION for REPAIR of axle boxes (URB) (hydraulic) (for: depot, railway transport, cars, locomotives, electric trains, Russian Railways, Ministry of Railways)
    • 020_INSTALLATION for DISASSEMBLY OF INNER BEARING RINGS from the journal of the wheelset axle (UDPK) (for: depots, railway transport, cars)
    • LIFTING AND TURNING DEVICE
    • WHEEL AND AXLE STORAGES
    • ROLLER CLEANING INSTALLATION
    • HYDRAULIC PRESS FOR PRESSING/PRESSING WHEEL PAIRS
    • Machines for washing axlebox housings and bearings
    • Car brake washing machine
    • Wheelset washing machine
    • Gearbox vibration diagnostic stand
    • Vertical lathe
    • Rolling lathe
    • Installation of dry cleaning of wheelsets
    • Press for straightening inspection covers of freight car axle boxes
  • For WARRIOR FACILITIES (trolley workshop)
    • 007_INSTALLATION for REMOVAL and INSTALLATION OF RIVETS of friction strips of freight cars (UVKZ) (hydraulic) (for: depot, railway transport)
    • 008_PRESSER FOR RIVETS of sidewalls of freight car bogies (VZ-30,40,60) (hydraulic) (for: depot, railway transport, Russian Railways, Ministry of Railways cars)
    • 009_RIVET RIVETER for friction strips of freight cars (K-1050) (hydraulic) (for: depot, railway transport, cars, train repair)
    • Trolley washing machine
    • Casting Conveyor Trolley
    • Turning circle
    • Trolley disassembly/assembly stand
    • Spring calibration stand
    • Stand for restoring the threaded part of the triangel and the hole for the cotter pin
    • Triangel surfacing stand
  • For WARRIOR SERVICE (for repair of automatic couplers)
  • For WARRIOR FACILITIES (for repair of draft gears)
    • 013_INSTALLATION for ASSEMBLY and DISASSEMBLY of absorbent friction devices of freight cars (URPFA) (hydraulic)
    • 014_INSTALLATION FOR TESTING TIE BOLTS M30 (for: depots, railway transport, cars, maintenance and repair of rolling stock of Russian Railways, Ministry of Railways)
  • For WARRIOR FACILITIES (non-destructive testing stands)
    • Stand for magnetic particle testing of axes
    • Stand for magnetic flaw detection of the middle and pre-hub part of the wheel pair axle SMDO-1
    • Gearbox vibration diagnostic stand
    • Wheel flaw detection stand
  • For WARRIOR FACILITIES (TOR PPV PTO)
    • 005_DEVICE FOR CLOSING GONDOLA CAR HATCHES (UGZL) (for: current uncoupling repairs of TOP, PPV car preparation points, technical inspection of PTO)
    • 006_EXPANDING WEDGE (KRA) (for straightening handrails and steps of cars during depot repairs) (for: current uncoupling repairs of TOP, PPV, PTO)
    • 022_MOBILE CAR MAINTENANCE COMPLEX (KPOV) (for: current uncoupling repair of TOP, PPW car preparation points, technical inspection of PTO)
    • 023_MOBILE EMERGENCY CAR REPAIR WORKSHOP (PARM - VG) (for: current uncoupling repair of TOP, PPV car preparation points, PTO inspection)
    • 025_CAR REPAIR MACHINE VRM “VITYAZ” (for: current uncoupling repair of TOP, PPV car preparation points, technical inspection of PTO)
    • 029_DEVICE for MOVEMENT OF HEAVY EQUIPMENT ON RAILS (TG10G300, TG25G600) (for: TOR, PPV, PTO)
    • 210_MOBILE CAR REPAIR WORKSHOP based on a TRUCK (PVRM) (crane manipulator, transportation of a team of workers) (base: KAMAZ, URAL, MAZ, UAZ)
  • For CAR WORKS (for repair of railway tanks) (tools for threaded connections)
    • 027_EQUIPMENT for WORKING with THREADED CONNECTIONS during REPAIR OF RAILWAY TANKS (for: depot)
• General industrial tilters
  • With lifting centers
    • Four-post tilter
    • Rotator with lifting centers
  • Ring
    • Ring tilter
  • Chain
    • Chain tilter
• Industrial hydraulics
  • Jacks; Hydraulic cylinders; Power Cylinders
    • 134_UNIVERSAL JACKS (hydraulic, diesel generator set) (one-sided, double-sided) (hydraulic jack, hydraulic cylinder, power cylinder)
    • 135_LOAD JACKS (hydraulic, DG, DGG, DGA) (one-sided, double-sided, aluminum) (hydraulic jack, hydraulic cylinder, power cylinder) (spring, gravity)
    • 136_STEP JACKS (hydraulic, DS) (one-sided) (hydraulic jack, hydraulic cylinder, power cylinder) (spring)
    • 137_LOW JACKS (hydraulic, DN) (one-sided) (hydraulic jack, hydraulic cylinder, power cylinder) (spring)
    • 138_HOLLOW ROD JACKS (hydraulic, DP) (one-sided, double-sided) (hydraulic jack, hydraulic cylinder, power cylinder) (spring, gravity)
    • 139_SUPPORTS for JACKS (hydraulic) (hydraulic jack, hydraulic cylinder, power cylinder)
    • 140_AUTONOMOUS JACKS (hydraulic, YES) (one-sided, bottle, with pick-up) (hydraulic jack, hydraulic cylinder, power cylinder) (spring, gravity)
    • 141_TELESCOPIC JACKS (hydraulic, DN, DT) (one-sided, double-sided) (hydraulic jack, hydraulic cylinder, power cylinder)
    • 142_LOW LIFT JACKS (hydraulic, DG) (hydraulic jack, hydraulic cylinder, power cylinder)
    • 143_PULLING JACKS (hydraulic, DO) (one-sided, double-sided) (steel, aluminum) (hydraulic jack, hydraulic cylinder, power cylinder) (spring, gravity)
    • 144_CONSTRUCTION JACKS (hydraulic, ICE) (double-sided) (hydraulic jack, hydraulic cylinder, power cylinder) (high-tonnage, universal)
    • 214_WEDGE JACKS (hydraulic, KRO, KRAO, DK, DG) (spreaders) (spring, gravity)
    • 215_HYDRAULIC CYLINDERS (HC) (double-sided) (hydraulic jack, hydraulic cylinder, power cylinder, jack)
    • 216_OSAKA JACK JACKS (AJ, NJ, PL, SB, TB) (mechanical, traction, supports)
    • 217_TAIYO HYDRAULIC CYLINDERS (telescopic, hollow rod, single and double rod, compact and ultra-compact, switching, oscillating, position sensor, hydraulic jacks) (pneumatic cylinders)
  • Hydraulic Pumping Stations; Oil stations
    • 122_MANUAL HYDRAULIC STATIONS (oil station, hydraulic pump station, oil MS) (single-stage, two-stage, for hydraulic drives, industrial, general industrial) (diesel, gasoline, electric, pneumatic drive) (small, mini) (production)
    • 123_HYDROSTATIONS for STATIC EQUIPMENT (oil station, hydraulic pump station, oil MS) (single-stage, two-stage, for hydraulic drives, industrial) (diesel, gasoline, electric, pneumatic drive) (small, mini)
    • 124_HYDRAULIC STATIONS for DYNAMIC TOOLS (oil station, hydraulic pump station, oil MS) (single-stage, for hydraulic drives, industrial, general industrial) (diesel, gasoline, electric, pneumatic drive) (small, mini)
    • 125_EXTRA HIGH PRESSURE HYDRAULIC STATIONS (oil station, hydraulic pump station, oil MS) (single-stage, two-stage, for hydraulic drives, industrial, general industrial) (diesel, gasoline, electric, pneumatic drive) (small, mini)
    • 126_EMERGENCY HYDRAULIC STATIONS (oil station, hydraulic pump station, oil MS) (single-stage, two-stage, for hydraulic drives, industrial) (diesel, gasoline, electric, pneumatic drive) (small, mini) (production)
    • 127_HYDRAULIC PUMP MODULES (oil station, hydraulic pump station, oil MS) (single-stage, two-stage, for hydraulic drives, industrial, general industrial) (diesel, gasoline, electric, pneumatic drive) (small, mini)
    • 128_UNIVERSAL HYDROSTATIONS NSD-2-40-PS (oil station, hydraulic pumping station, oil MS) (single-stage two-stage, for hydraulic drives, industrial) (gasoline)
  • Hydraulic presses
    • 155_PRESSES with CLOSED FRAME (PSM, PPK, Economy, Prof) (hydraulic, closed) (for pressing, pressing, bending, stamping, force from 10 to 250 tf)
    • 212_UNIVERSAL PRESSES (PMU) (hydraulic, with a traverse on the frame) (for pressing, pressing out, straightening, bending parts; force 35 tf)
    • 219_Device for RIVETING (for modernizing cars, lengthening the middle of a truck chassis)
    • Open frame presses
  • Controlled Object Movement Systems
  • For the production of slings, rigging, thimbles
  • Pullers, Dismantling Jacks, Oil Injectors
  • Hydrodynamic Tool
    • 090_PICK HAMMER; CONCRETE BREAKER (hydraulic) (peaks, MO, MRG, M) (hydrodynamic equipment, tools) (for: construction, ASG, housing and communal services, Ministry of Emergency Situations, MO)
    • 091_ANGLE GRINDER (hydraulic) (MShG) (hydrodynamic equipment, tools) (for: road construction, housing and communal services, Ministry of Emergency Situations, Ministry of Defense)
    • 092_CIRCULAR SAW (hydraulic) (PDG) (hydrodynamic equipment, tools) (for: industrial, civil, road construction, ASG)
    • 093_CHAIN ​​SAW, HACKSAW (hydraulic) (PCG, APG) (hydrodynamic equipment, tools) (industrial, civil construction)
    • 094_MANUAL DRILL REVERSIVE (screwdriver) (hydraulic) (DRG) (for: industrial, civil, road construction, ASG, roads, housing and communal services, Ministry of Emergency Situations)
    • 095_PERFORATOR (hydraulic) (PRG) (hydrodynamic equipment, tools) (housing and communal services, services, ministries, housing and communal services, Ministry of Emergency Situations, Ministry of Defense)
    • 096_IMPACT WRENCH REVERSIVE (hydraulic) (GR 500 1500 2000) (for: industrial, civil, road construction, services, ministries, housing and communal services)
    • 097_SUBMERSIBLE SLURRY PUMP (hydraulic) (PSH) (for: water pumping, road construction, housing and communal services, housing and communal services, Ministry of Emergency Situations, Ministry of Defense)
    • 098_CENTRIFUGAL FAN (hydraulic) (HCG) (hydrodynamic equipment, tools) (for: housing and communal services, housing and communal services, Ministry of Emergency Situations)
    • 099_WELDING MACHINE (hydraulic) (ASG 200 220 300 380) (hydrodynamic equipment, tools) (for: construction, housing and communal services, Ministry of Emergency Situations, Ministry of Defense)
    • 100_POWER GENERATOR (alternating current 220 380) (electricity, electric generator, electric) (SG) (hydraulic) (hydrodynamic equipment)
    • 101_MAIN WATER VALVES ROTATOR (VZ) (hydraulic) (for: repairs, emergency and preventative work on pipelines, housing and communal services)
    • 102_PARAMETER MATCHING BLOCK (hydraulic) (BG) (for operation from the hydraulic system of a machine, tractor, excavator, car, equipment)
    • 104_MAVR, MACHINE FOR EMERGENCY RESTORATION AND REPAIR WORK (for: road construction, housing and communal services, housing and communal services, Ministry of Emergency Situations, Ministry of Defense)

A Brief Overview of Alternative Methods

When reconstructing capital structures, there is often a need for a high-performance and mobile method of destruction reinforced concrete structures. Typically, explosives, hydraulic hammers, and hand-held electric or pneumatic hammers are used for these purposes. It is known that the destruction of reinforced concrete structures by explosive methods has significant disadvantages. These are the costs of preparing the site, large scattering of pieces of concrete, the likelihood of damage to equipment and communications at a considerable distance from the explosion site.
Hydraulic hammers, as a rule, are mounted on the boom of heavy excavators, which limits their use in cramped conditions. The traditional use of manual electric and pneumatic breakers leads to very high physical costs with extremely low productivity when dismantling even relatively small reinforced concrete structures in terms of volume and strength.
There are other methods, based, for example, on the use of installations that create high pressure in pre-made holes with currents high frequency or special expanding compounds. However, these methods require additional labor-intensive preparation of the object in the form of a grid of holes, performed manually with special hammer drills.

Operating principle and design

At JSC Federal Research and Production Center Altai, as part of conversion programs, experimental samples of a shock-pulse installation using the energy of gunpowder have been developed, manufactured and tested.

It is known that concrete is characterized by high compressive strength and low (an order of magnitude lower) tensile and fracture strength. A high-force blow applied to a concrete structure can cause a network of microcracks in it, which, upon repeated impact, lead to destruction.
The working body of the installation is a firing device consisting of a barrel and a charging chamber with a bolt. The destruction of concrete is carried out by a disposable striker, accelerated in the barrel by a powder charge that burns in the charging chamber. A number of ballistic and design features of this device make it possible to impart a speed of up to 1500 m/s to the striker, which corresponds to an impact energy of up to 2000 kJ with a dead weight of the working body of about 180 kg. One blow (shot) of such force is enough, for example, for complete destruction concrete block dimensions 2.0 x 0.6 x 0.6 m. For comparison: the most powerful hydraulic hammers have a single impact energy of up to 3 - 5 kJ with a working body mass of about 3 tons, and the total mass of the entire mechanism reaches (60 - 80) tons.
To increase the productivity of destruction, ballistic calculations of the parameters of the shot and search experiments were carried out, which showed that the efficiency of the installation increases significantly if, during the shot, the barrel is in extreme proximity to the surface of the object being destroyed, i.e. point-blank shot. In this case, additional destruction is caused by a high-speed gas jet following the impactor and creating pressure in the resulting cracks due to its braking. This method does not require additional preparatory work, such as drilling holes, and is devoid of factors accompanying an explosion (scattering of large fragments, shock air wave). This allows the installation to be used in operating production conditions, for example, directly in factory workshops without stopping them.
The shock-pulse installation is capable of destroying structures made of concrete and reinforced concrete of any brand, brickwork, frozen soil, punch holes in foundations and foundations.

The invention relates to hydraulic structures and explosive technology, namely to the destruction of ice on rivers during ice drifts. The installation includes a support platform, supply gas pipelines, and an electric discharger in contact with the cable. A tubular rod connected to the gas pipelines is hinged on the support platform, equipped with a return mechanism, a position lock hook and an electric discharger attached to the end of the rod. The support platform is equipped with a protective fairing, anchors and a position lock grip, made in the form of a rigid bracket and an elastic latch secured to the support platform, equipped with a tension cable. In this case, the tubular rod is made in the form of a package of pipes connected to the supply gas pipelines through flexible pipes, an air collector and a flammable gas collector, and at the outlet of the pipe package, the latter are equipped with check valves. The pipe package is made of pipes of the same diameter, secured with ties, with three pipes for flammable gas and two for air. The return mechanism is made in the form of a pair of torsion springs with hooks attached to the coupler and to the support platform. The electric discharger is made in the form of an elastic steel ruler with connectors with supply cable electrodes fixed in the perforations of the latter. The technical result consists in preventing the formation of ice jams, increasing the level of safety, productivity when crushing large ice floes during ice drift, reducing energy costs and increasing environmental friendliness. 6 salary f-ly, 8 ill.

The invention relates to explosive technology, namely to the destruction of ice on rivers during ice drifts.

Prevention of ice jams that initiate floods is largely achieved by the destruction of large ice floes and ice fields. However, such measures are labor-intensive, often involve significant danger to people, are environmentally harmful and are burdened with significant transportation costs. The use of river flow as a mechanism for moving ice fields to the destruction zone is the most economically preferable, and the use of gas mixtures for explosions is the most environmentally friendly for all blasting operations.

A device is known for reducing the load on hydraulic structures from the action of ice, including lines for supplying explosive gases into the space under the ice through outlet pipes and a means for igniting the gases, while the means for igniting the gases is made in the form of an additional line with outlet pipes connected to the source of the explosion initiating gas, while the outlet pipes of the mains are made of elastic material and are placed vertically above the mains /SU A.C. No. 1629400, 1991/.

This device is supposed to be used only on hydraulic structures with slow-moving ice masses, which is ineffective and does not solve the problems of congestion in river beds, especially at turns and shallows; the device is low-tech and low-ecological, because involves the use of fluorine oxide.

A device for breaking ice on water is known, including an explosive generator gas mixture, electric pulse generator, explosive container, characterized in that the explosive container is made in the form of a roll of a tubular gas-tight shell, connected at one end to the generator of an explosive gas mixture by a gas hose, and at the other end - sealed, while pyro-igniters are placed inside the explosive container, and An exhaust cable is attached to the outside. /RU Patent No. 2322548, 2005/.

The known device is ineffective, requires the presence of people when preparing an explosion on the surface of the ice cover, and does not solve the problem of ice destruction during ice drift.

The closest is an installation for destroying ice during ice drift, which includes gas pipelines connected to sources of excess pressure, an electric discharger with a high voltage source, one gas pipeline is connected to a source of excess pressure of flammable gas, and the other to a source of excess pressure of air, and the second ends of both gas pipelines are together with an electric discharger are fixed on an installation platform fixed at the bottom of the reservoir, while the electric discharger is made in the form of an elastic rod with the possibility of contact with the lower plane of the ice, equipped with discharge electrodes and connected by a cable to a high voltage source. /RU Application No. 2002107060/.

The known installation is not technologically advanced enough in use and storage and in the “standby” mode, is not economical enough and does not provide high degree the use of an explosive gas mixture is of limited use for initiating a series of small explosions along moving ice fields.

The objective of the invention is to prevent the formation of ice jams, while increasing the level of safety, manufacturability and productivity when crushing large ice floes, moving ice fields during ice drift, reducing energy costs and increasing environmental friendliness.

The problem is solved by the fact that in an installation for destroying ice during ice drift, including a support platform, supply gas pipelines, an electric discharger in contact with the cable, according to the solution, a tubular rod connected to the gas pipelines is hinged on the support platform, equipped with a return mechanism, a position lock hook and attached to the end of the rod electric discharger, the support platform is equipped with a protective fairing, anchors and a position clamp made in the form of a rigid bracket and an elastic latch fixed to the support platform, equipped with a tension cable, while the tubular rod is made in the form of a package of pipes connected to the supply gas pipelines through flexible pipes, a manifold air and a flammable gas collector, and at the outlet of the pipe package, the latter are equipped with check valves, at the same time, the pipe package is made of pipes of the same diameter, secured with ties, with three pipes for flammable gas, and two for air, the return mechanism is made in in the form of a pair of torsion springs with hooks attached to the coupler and on the support platform, and the electric discharger is made in the form of an elastic steel ruler with connectors with supply cable electrodes fixed in the perforations of the latter, with each electrode shielded by a protective conductive visor fixed to the steel ruler.

Distinctive features are:

A tubular rod connected to the gas pipelines is hinged on the support platform, equipped with a return mechanism, a position lock hook and an electric discharger attached to the end of the rod (ensuring the supply of an explosive mixture of gases directly under the edge of moving ice and the reliability of ignition of even small explosive volumes, economical consumption of the gas mixture);

The support platform is equipped with a protective fairing, a position lock grip and anchors (ensuring reliability, longevity of operation, increasing manufacturability);

The latch grip is made in the form of a rigid bracket and an elastic latch secured to the support platform, equipped with a tension cable (increasing the manufacturability and safety of the transformation process from the “standby” mode to the working state);

The tubular rod is made in the form of a package of pipes connected to the supply gas pipelines through flexible pipes, an air collector and a flammable gas collector, and at the outlet of the pipe package, the latter are equipped with check valves (ensuring the required performance when supplying a gas mixture, increasing the reliability of operation);

The pipe package is made of pipes of the same diameter, secured with ties, with three pipes for flammable gas, and two for air (increasing manufacturability, reliability of operation, the ability to automatically fall into the optimal stoichiometric ratio of the supplied mixture of gases at the same pressure of the latter);

The return mechanism is made in the form of a pair of torsion springs with hooks attached to the screed and to the support platform (increasing manufacturability, transformation from the “standby” mode to the working state, “reliability of copying” the lower surface of the ice floes);

The electric discharger is made in the form of an elastic steel ruler with connectors with supply cable electrodes fixed in the perforations of the latter, with each electrode shielded by a protective conductive visor fixed to the steel ruler (increasing the reliability of operation during explosions of the gas mixture, the durability of the electric discharger assembly).

Thus, the proposed solution meets the “novelty” criterion.

Comparison of the claimed solution with analogues did not allow us to identify in them the features that distinguish the claimed solution from the prototype, which allows us to conclude that it meets the “inventive step” criterion.

The invention is illustrated by drawings, where Fig. 1 is a side view of the installation, Fig. 2 is a top view of the installation, Fig. 3 is a sectional view A-A installations in the "standby" mode, Fig.4 - return mechanism, view B, Fig.5 - check valve, Fig.6 - installation in the "standby" mode, side view, Fig.7 - electric discharger assembly, Fig.8 - section along V-V electric discharger.

The installation for breaking ice contains a support platform 1 with a protective fairing 2 and anchors 3, a cable 4, a flammable gas supply line 5, an air gas line 6, flexible pipes 7, an air manifold 8 and a flammable gas manifold 9, supports 10, a return mechanism 11 with hooks 12, tubular rod 13, position lock hook 14, electric discharger 15, couplers 16, 17, 18, elastic ruler 19, connectors 20 with electrodes 21, protective conductive visors 22, check valve 23 with perforation windows 24, spring 25 and ball 26, clamp 27 with rigid bracket 28, elastic latch 29 and tension cable 30.

An installation for destroying ice during ice drift is used as follows.

Pre-autumn, before the formation of ice cover, the assembled installation is connected to cable 4, supplying flammable gas gas pipeline 5 and air gas pipeline 6, and in a compact form is installed on the river bottom in the “standby” position and securing the support platform 1 with a protective fairing 2 anchors 3 It is possible to strengthen the installation for breaking ice from the surface of the ice cover through the hole in front of the ice drift. Supply gas pipelines 5, 6 are connected to the system of supply receivers on shore, and cable 3 is connected to high voltage sources (not specified). The tension cable 30 is brought out along the river bottom to the shore.

Before the ice begins to move, the installation is taken out of the “standby” mode by tensioning the cable 30, bending the elastic latch 29 from the bracket 28 and releasing the position lock hook 14. The return mechanism 11 with hooks 12 lifts the tubular rod 13 on the hinge of the support 10 almost vertical position. Supply gas pipelines 5, 6 are purged with flammable gas and air, respectively, with the latter entering flexible pipes 7, manifolds 8, 9 and then into the pipe package of the rod 13. When ice moves along the surface of the river, the ice floes tilt and immerse the tubular rod 13 under the ice, while elastically The torsion springs of the return mechanism 11 are deformed and the electric discharger 15 begins to slide along the lower surface of the moving ice floe. In this case, the elastic ruler 19 ensures constant pressure on the electric discharger, and the protective conductive visors 22 protect the connectors 20 with the electrodes 21 from damage. When the installation position is reached close to the central area of ​​the ice floe, the pressure in the supply system rises to the response value of the check valves 23 and a portion of flammable gas and air, dispersed through the perforation windows 24, is mixed to a high-quality explosive mixture. The resulting volumes of the latter explode by applying high voltage pulses to the electrodes 21 and thereby initiating discharges between the electrodes and the protective conductive visors 22. The material of the parts and components of the ice destruction installation is made with strength characteristics many times greater than the strength of ice, and check valves 23, operating in the critical pressure zone, are equipped only with steel parts - spring 25 and ball 26. The supply of portions of the explosive mixture can alternate after 5-15 seconds or more (depending on the area and speed of movement of the ice fields), and the volume of the explosive mixture (in depending on the thickness of the ice) - from 10 to 200 liters. After the ice drift is completed, the installation is again transformed into a compact position of the “standby” mode, and the protective fairing 2 protects the installation from possible impacts from driftwood, snags, etc. until the next ice drift.

An installation for destroying ice during ice drift prevents the formation of ice jams, increases the level of safety, manufacturability and use, productivity when crushing large ice floes, moving ice fields during ice drift, reduces energy costs and improves environmental friendliness.

Claim

1. An installation for destroying ice during ice drift, including a support platform, supply gas pipelines, an electric discharger in contact with a cable, characterized in that a tubular rod connected to the gas pipelines is hinged on the support platform, equipped with a return mechanism, a position lock hook and an electric discharger attached to the end of the rod.

2. Installation according to claim 1, characterized in that the support platform is equipped with a protective fairing, a position lock grip and anchors.

3. Installation according to claim 2, characterized in that the latch grip is made in the form of a rigid bracket and an elastic latch secured to the support platform, equipped with a tension cable.

4. Installation according to claim 1, characterized in that the tubular rod is made in the form of a package of pipes connected to supply gas pipelines through flexible pipes, an air manifold and a flammable gas collector, and at the outlet of the pipe package the latter are equipped with check valves.

5. Installation according to claim 4, characterized in that the pipe package is made of pipes of the same diameter, secured with ties, with three pipes for flammable gas, and two for air.

6. Installation according to claim 1, characterized in that the return mechanism is made in the form of a pair of torsion springs with hooks attached to the coupler and to the support platform.

7. Installation according to claim 1, characterized in that the electric discharger is made in the form of an elastic steel ruler with connectors with supply cable electrodes fixed in the perforations of the latter, with each electrode shielded by a protective conductive visor fixed to the steel ruler.

We present to your attention the technology for replacing pipelines using hydraulic destruction.

The method of hydraulic destruction of pipelines consists of destroying an old pipe, while simultaneously pulling a new pipe of a larger or equal diameter underground through the old channel, without opening the road surface.

The need for and advantages of the hydraulic destruction method

The destruction method is the most common method throughout the world. This technology found wide application when replacing cast iron, steel, reinforced concrete and other types of pipelines with polyethylene, almost eternal pipes for water supply, sewerage and heating networks.

Objectively, the need for a destruction method is due to the following reasons:

1. Urban utility networks throughout Russia they are worn out by 70-90%. The bulk of the steel and cast iron pipelines simply rotted. In these conditions, the development of housing and communal services simply requires the large-scale use of new construction technologies.
2. In cramped urban environments, there is often simply no place to lay communications outside of old pipeline lines. The need for laying communications along old, exhausted routes in our cities is almost greater than laying new pipelines.
3. Gradually, almost everywhere in both large and small cities, autopsy bans come into force road surface, for work carried out in an open pit.

Let us note the main advantages of this technology:

• the work takes place without opening the road surface;
• the pipe is laid along the old channel;
• high speed of pipeline laying;
• relatively low cost of work;
• possibility of increase bandwidth pipeline;

Hydraulic Fracture Method Technology

Work begins with the preparation of the receiving and starting pit.

The most important thing in preparing the starting pit is the precise alignment of the destroyer’s working machine relative to the pipe being destroyed. The horizon of the machine must coincide with the horizon of the pipe, which imposes certain requirements on the preparation of the surface of the pit, the thrust wall and the cut of the pipe itself: all these elements must be as smooth as possible. With careful preparation of the pit, it is possible to avoid movement of the destructive machine in the transverse plane and unnecessary vibrations. In addition, to insure against watering, it is important to prepare the “floor” of the pit by filling it with crushed stone or laying a flooring made of boards.

The requirements for the receiving pit are simple - the main thing is to ensure a convenient entry for the pipe to be tightened.

It is immersed in the pit using a crane, and the hydraulic oil station that powers it remains on the surface. The length of the hoses allows for easy placement of these two main units of the installation.

To work with the destroyer, a steel stop is made. For example, it could be a slab measuring 1.2x2.5 m and 15 mm thick. Otherwise, an installation with a backdraft force of 50 tons or more would bury itself, not finding a sufficient platform for support during the destruction of the pipe.

The hydraulic destroyer rods are progressively twisted by a special mechanism and pushed along the old pipeline channel until they exit into the receiving pit. It is important to note that the slope of the pipe channel from the starting pit to the receiving pit should not exceed 20 degrees, which is due to the flexibility of the destroyer rods.

After the rods exit into the receiving pit, a destructive head is installed, followed by a pipe through a collet. The destructive knife head is selected based on the outer diameter of the pipe being pulled (for example, 110, 160, 225, 325, 425 mm):

When all elements are connected, the installation switches to reverse pulling mode and the process of replacing the old pipe with a new one begins:

Destruction occurs simultaneously with the pulling through of a new HDPE pipe. The fragments of the old pipe are pressed into the channel walls with a crushing head. If the pipe being destroyed is steel, the knife of the destructive head cuts it, and its head opens to the sides. At the end of the destruction process, the destruction head approaches the installation:

The destroyer moves away from the pipe (the rods' own stroke is used as when pushing). Between the destroyer and old pipe the thrust frame is installed. After this, the destroyer pulls in the destroying head with new pipe into the pit:

The thrust frame is pulled out of the pit, the entire towing system is disassembled and dismantled. The new PE pipe is stretched and ready for connection:

Instead of a conclusion

Ditch Witch® hydraulic destroyers allow you to destroy old pipes while simultaneously pulling new ones in the most common diameter range in Russia: 110, 160, 225, 315, 425 mm and more.

The advantages of the technology are obvious, but they are most clearly demonstrated by the work already carried out:

For example, to replace 120 meters steel pipe with a diameter of 200 mm per polyethylene pipe with a diameter of 225 mm, excluding the time for preparing the starting and receiving pits, is required six hours of work.

According to the most preliminary estimates, carrying out this work in an open way with subsequent filling and landscaping of the territory will take several days (in the absence of landscaping work) up to two weeks or more.

Note that destroying a pipe with a diameter of 200 mm is not the most difficult task for the Ditch Witch® destroyer. During such work, the power of the 91-ton destroyer is used by no more than 30%.

City Vodokanals will especially appreciate this installation method. Other rehabilitation methods, such as “pipe-in-pipe” technology or restoration of old pipelines, are not always possible or economically feasible. A open method longer, requires larger-scale involvement of equipment and significant labor costs. In the future, soil filling and landscaping will certainly be necessary. We should not forget the main advantage of all trenchless methods of laying communications - the absence of the need to block traffic when digging under highways.

Let's finish here. The conclusions are obvious to everyone.

Manager of DITCH VITCH Systems LLC,
David Shakhnazarov