Method of trenchless installation of bundle of pipes in soil
SUBSTANCE: method includes formation of a pioneer well along the design axis of the installed bundle of pipes between working and receiving pits and simultaneous installation of a drilling bar in it, which is connected to the working organ, subsequent expansion of the pioneer well to the design diameter by soil damage with the help of the working organ, simultaneous transportation of damage products with the help of a cleaning agent into the space between the expanded pioneer well and the bundle of pipes and installation of the bundle of pipes in the expanded pioneer well.
EFFECT: increased reliability of installation of a bundle of pipes without complications related to sags of surface above a well.
The technical solution relates to the technology of construction works and can be used for trenchless installation of underground utilities. The proposed method is effective in the construction of dead-end horizontal wells or in crowded urban environments.
A known method of forming wells in the ground when laying underground utilities under the obstacle by the RF patent №2127348, E02F 5/18, publ. in BI No. 7 for 1999, including the sinking of the pioneer wells project axis laid communication between the working and receiving pits, placing pioneer in the bore of the rod, which is connected to the working body, the movement of the working body at the pioneer well the Appendix to the rod axial forces, the expansion of the pioneer wells with a working body to the design diameter of the destruction of the soil, transportation of products of destruction through the working agent who serves in the zone of destruction. When breaking ground for the expansion of pioneer well its pre-ground and sent to grantorino camera working body, and by breaking ground on an additional impact jets working agent, and in grantorino the cell debris mixed with the working medium to form a slurry, and the transportation of products of destruction carried out with what omashu located in grantorino chamber ejector pump located inside the well to the pipeline, and as well it serves a thixotropic solution.
The disadvantage of this technical solution are low productivity and reliability. The performance of the ejector pump is small by definition. Jet working agent entrain a portion of the pulp, in grantorino the camera. The concentration of the solid phase, i.e. soil, slurry pipeline will inevitably be low. It will therefore be low and the throughput of the pipeline. In addition, to transport a certain volume of products of destruction required a large amount of working agent. In places underground often heterogeneous in composition of the soil with inclusions in the form of fragments of stone, brick, gravel, and other construction debris. When getting such a solid insoluble in the working agent inclusions inside grantorino camera is blockage of the ejector pump or slurry pipeline. This causes an emergency stop of a process. If the flow of the working agent in grantorino the camera does not stop, he comes out and washes away the soil, forming a cavity. This leads to failure of the surface above the well. In addition, when laying the tube bundle, the cross-sectional area smaller than the sectional area of the formed wells will be formed voids, materialpolyester can be collapsed soil formed in the well. It can also lead to failure of the surface above the well.
The closest in technical essence and essential features is the way trenchless laying of pipes in the ground in the first embodiment according to the patent of Russian Federation №2344241, E02F 5/18, publ. in BI No. 2 for 2009, which includes education pioneer wells project axis laid communication between the working and receiving pits and simultaneous laying in her drill rod. Rod connected to the working body, then extend the pioneer well to the design diameter of the destruction of the ground by means of the working body and the transport of products of destruction of the flow of treatment agent through the tubing, which is placed in the extended portion of the well, combined with the working body and rotate together with it around the longitudinal axis.
As in similar, if formed in the well to lay the tube bundle, the cross-sectional area smaller than the sectional area of the formed wells will be formed of emptiness that can fill the collapsed soil formed in the well. It can also lead to failure of the surface above the well, therefore, this method is unreliable when laying the tube bundle.
The technical objective of the proposed method is to increase nadinesilke beam pipe due to the exclusion of the failure surface above the well.
The solution to this problem is provided by the fact that in the method of trenchless laying of the beam pipe in the ground, including education pioneer wells project axis of the laying tube bundle between the working and receiving pits and simultaneous laying in her drill rod, which is connected to the working body, the subsequent expansion of the pioneer well to the design diameter of the destruction of the ground by means of the working body, the simultaneous transportation of products of destruction with the help of cleaning agent and the gasket in the extended pioneer borehole tube bundle, according to the technical solution of the transportation of products of destruction of cleaning agent is carried out in the space between the extended pioneer bore and the tube bundle.
Transportation of products of destruction in the space between the extended pioneer bore and the tube bundle will allow you to fill the voids in the well that will prevent collapse of the soil inside the hole, and therefore, would prevent the failures of the surface above the well, which increases the reliability of the laying tube bundle in comparison with the prototype.
The essence of the proposed method of trenchless laying of the beam pipe in the ground is illustrated by the example of its implementation and the drawings figure 1-3. The implementation scheme is shown in figure 1, figure 2 - section a-a in figure 1, figure 3 cross-section B-B in figure 1
Method of trenchless laying of the beam pipe in the ground is implemented as follows. Project axis of the laying tube bundle between work 1 (1) and the receiver 2 pits form the pioneer well 3. Sinking pioneer of the well 3 may be carried out by any known method, for example, by using a punch or installation of horizontal drilling. The diameter formed by the pioneer wells 3 significantly less than the design diameter of the hole formed for trenchless laying of the beam pipe in the ground. Simultaneously with the formation of the pioneer bore 3 therein lay the drill rod 4. After laying pioneer in hole 3 drill stem 4 in the receiving pit 2 to attach it working body 5, the diameter of which is equal to the design diameter of the hole. Inside the working body 5 mounted radially spaced blades 6 (figure 2), which destroy the soil and pulverized debris. Also in the working body 5 is swivel 7, to which is fixed a tube bundle 8. Drilling rod 4 rotates together with the working body 5 and at the same time move onward in the direction opposite the sinking of the pioneer wells 3. While rotating one of the parts of the swivel 7, and the other fixed with the tube bundle 8, moved onward together with the drill rod 4. The rotation and movement of the drilling ø is any 4 can be carried out by the drilling machine 9. When moving the working body 5 to pioneer the well 3 is its extension to the design diameter of the destruction of the ground by means of the working body, the simultaneous transportation of products of destruction with the help of cleaning agent and laying in the extended pioneer the well 3 of the tube bundle 8. Progress of the working body 5 periodically carry out the dismantling of parts of the drill rod 4. The products of destruction received in the cavity 10 of the working body 5. Through the hollow drill rod 4 serves a cleaning agent under pressure Pmfrom the pump or compressor 11, the cleaning agent is led to the blades 6. During the rotation of the working body 5 in the cavity 10 of mixing of particles 12 of decay products 6 blades (figure 2), which are then fed into the space between the borehole wall and the tube bundle 8 under the pressure of the cleaning agent (figure 3)and the cleaning agent flows into the tank 13 mounted in the receiving pit 2. Thus the process of laying tube bundle 8 according to the proposed method. After the release of the working body 5 in the working pit 1 is implemented by its removal.
Method of trenchless laying of the beam pipe in the ground, including education pioneer wells project axis of the laying tube bundle between the working and receiving pits and simultaneous laying in her drilling Stan and, which connect with the working body, the subsequent expansion of the pioneer well to the design diameter of the destruction of the ground by means of the working body, the simultaneous transportation of products of destruction with the help of cleaning agent and the gasket in the extended pioneer borehole tube bundle, characterized in that the transportation of products of destruction of cleaning agent is carried out in the space between the extended pioneer bore and the tube bundle.
SUBSTANCE: method includes submersion of a pipe into soil with an open end, formation of a soil core in it and its removal from the pipe with the supplied fluid medium by means of breaking and squeezing out in parts. The fluid medium is supplied into the soil core at the outer side of the submerged pipe, using the channel of connection between the pipeline for supply of the fluid medium and the inner cavity of the submerged pipe.
EFFECT: increased efficiency due to reliability of soil core removal by means of creation of conditions to preserve integrity of a broken part of the soil core.
5 cl, 3 dwg
FIELD: machine building.
SUBSTANCE: device includes a pipe-destructing working element with two disc knives, a reamer for enlarging the well diameter, an attachment device of a new plastic pipeline and a tie-rod element in the form of a rope with elements installed on it. Each element installed on the rope is made in the form of a detachable sleeve with three equally spaced radially oriented cylindrical rods, in each of which a fork with a ball is installed so that fixed radial movement is possible. A radial slot is made throughout the length of detachable sleeve between adjacent cylindrical bars; a retaining screw is inserted in a threaded hole in the middle of the above radial radial slot. The pipe-destructing working element is made in the form of an assembled two-section framework, the centre of the rear end face of which has a spherical slot. The reamer is made in the form of an assembled two-section flattened cone, the centres of both end faces of which have spherical slots The rear end face of the pipe-destructing working element and the front end face of the reamer are connected by means of a hinge joint consisting of a pin, on both ends of which balls are installed by means of a thread The rear end face of the reamer and the attachment device of a new plastic pipeline are connected by means of a hinge joint consisting of an additional pin, on one end of which a ball is installed by means of thread and inserted in the spherical slot of the rear end face of the reamer, and the other end of the additional pin is installed in an axial hole of the attachment device of the new pipeline and fixed with a nut
EFFECT: improving reliability of hinge joints and a tie-rod element at passage of curved sections of pipelines.
SUBSTANCE: proposed method comprises driving the trench to accommodate therein the protective jacket to receive the pipeline thereafter. Before driving said trench, in front of motor road or railway said protective jacket is placed to accommodate rotary screw with detachable cutting element at its end face directed toward the road. Cutting tool diameter equals protective jacket OD. Screw length exceeds that of protective jacket, screw extension being directed from the road. Screw shaft is engaged with rotary drive placed at slide rails provided with semicircular ledge arranged atop said rails and directed toward protective jacket above said screw, its end and jacket ends are jointed together by flanges to be bolted together. Slide rails are to be fixed relative to drive by "П"-like bracket secured at drive frame to thrust against slide rails rear end and to surround them from both sides. Then, screw drive is switched on to displace slide rails with revolving screw and protective jacket toward the road so that said jacket penetrates into soil to get completely buried therein. Then, said cutting element and bolts are removed from screw end. Then said screw is withdrawn from said jacket to fit main pipeline section therein.
EFFECT: safe and reliable laying, lower costs and labor input.
SUBSTANCE: installation comprises a frame, a carriage with a control unit arranged on it with a technological adapter, a hydraulic cylinder connected by the body to the frame, and with the stem to the carriage, at the same time the frame has guides for carriage rollers. The frame is made of the carriage frame and the hydraulic cylinder frame connected to each other.
EFFECT: increased reliability of operation and reduction of time for installation assembly and disassembly, increased volume of working space in a well and increased efficiency of performed works due to placement of a hydraulic cylinder with stem length that is larger than in a prototype outside the limits of the well, and whenever it is required to increase force characteristics.
3 cl, 2 dwg
SUBSTANCE: method in accordance with the first version includes formation of a pilot well along a design axis of the installed utility, expansion of the pilot well to the design diameter by damage of soil with the help of a working element connected with a drilling rod, and transportation of products of damage by means of a pipeline connected with a free end of the working element as the latter rotates around the longitudinal axis, for this purpose pressure is pulled at the open end of the pipeline below the atmospheric pressure with the help of a vacuum-forming device. The method in accordance with the second version differs from the method in accordance with the first method by the fact that transportation of damage products is carried out with the help of a drilling rod.
EFFECT: increased efficiency of a working process due to usage of process equipment, principle of operation of which provides for rational use of installed capacity.
3 cl, 2 dwg
SUBSTANCE: device comprises a body, a working organ, a mechanism of tunnelling direction control, which is made in the form of a tip installed in the front part of the body with the possibility of angular displacement, connected with a piston, a spring, a chamber, connected with channels for energy resource supply, and a navigation device fixed in the body, besides, the spring with its rear end is fixed on the front end of the piston, and with the front end - on the body, at the same time the read end of the piston contacts with the specified chamber.
EFFECT: arrangement of a tunnelling direction control mechanism inside a device body prevents negative effect of soil in process of well tunnelling.
3 cl, 4 dwg
SUBSTANCE: device for formation of wells in soil by the method of piercing comprises a hollow working tip of conical shape fixed on the front end of a pressure rod in direction of piercing and a feeding mechanism. In the wall of the hollow working tip there are holes, and on its outer surface there is an elastic impermeable shell fixed to the top and the base of the working tip. The inner cavity of the working tip is tightly connected to the hollow pressure rod, the other end of which is connected with a source of pulsating liquid or gas.
EFFECT: increased efficiency.
SUBSTANCE: device for trenchless laying of pipelines by piercing comprises a working tip of conical shape, a vibrator of circular oscillations of which is arranged in the form of an electric motor with a hollow shaft, the stator of which is fixed in the working tip, and the rod is installed inside the hollow shaft, having a displaced centre of gravity relative to the axis of rotation, at the same time the rod is fixed on the flange, which is mounted on the front end of the laid pipeline along the piercing direction. The rotation device is arranged in the form of a cover with a hole, rolling in displaced surfaces of the rotating eccentric reciprocally moving along the longitudinal axis of the rod.
EFFECT: higher accuracy of pipeline laying.
SUBSTANCE: device for trenchless installation of pipelines, comprising a guide body arranged on telescopic supports with a cut upwards, made of a 2/3 diameter of the pipe in the form of a hemisphere reinforced with stiffening ribs, having inside the welded thrust plates at the distance equal to the length of the power hydraulic cylinder stem, windows for soil discharge, stop wedges, a grip, differing by the fact that a carriage made as telescopic of double-sided action, having thrust sliding plates, an opening for soil transportation, is arranged inside the guide body transferring the force of power hydraulic cylinders installed on the telescopic carriage of the double-sided action.
EFFECT: higher efficiency of labour, expanded range of installed pipelines diameters, lower labour intensiveness.
FIELD: oil and gas industry.
SUBSTANCE: combined air-impact device includes a needle fixed in head part of the housing, working and auxiliary chambers separated with a spool valve with calibrated channel for connection of the above chambers, calibrated channel for connection of auxiliary chamber to atmosphere at the corresponding position of spool valve, stepped longitudinal channel for arrangement in the latter of differential piston and check valve, and which opens discharge ports of the working chamber periodically. Device is made in the form of combined structure containing front and rear housings with compressed air pulse escape mechanism and shank of two nipples connected to each other; at that, exhaust openings of working chamber in front housing of the device are oriented at design angle within more than 90°, but less than 180°, and in rear housing at design angle within more than 0°, but less than 90° relative to shank part from longitudinal axis of combined structure, and shank with air-distributing mechanism for compressed air supply at design pressure P1 or P2 to auxiliary chambers of the device and consisting of spring-loaded stock-piston with central and transverse channels and system of air-distributing channels supplying the compressed air to auxiliary chamber of front and rear housings with possibility of alternating supply to them of compressed air at pressure P1 or P2 at the corresponding position of stock-piston in the shank.
EFFECT: increasing operating efficiency of the device.
FIELD: construction, applicable for trenchless laying and replacement of underground pipe-lines.
SUBSTANCE: a reciprocating striker is positioned in the casing of the pneumatic percussion mechanism. The air-distributing system of the mechanism includes the front and rear working chambers, inlet and exhaust valves and a fixture for closing and opening of the exhaust channels made in the form of a spring-loaded end face stopper coupled to a tractive member. At actuation of the pneumatic percussion mechanism, before the supply of compressed air, the exhaust channels are closed, they are opened after the inner cavities of the pneumatic percussion mechanism are filled with compressed air.
EFFECT: provided automatic cyclic action of the pneumatic percussion mechanism.
3 cl, 3 dwg
FIELD: mining industry.
SUBSTANCE: method includes expanding guiding pipeline by extracting soil from around it by driving shield with rotor working implement. Soil is extracted to value, surpassing needed outer diameter of shield cover. Forming ring-shaped space inside tunnel mine is compacted from back side and continuously filled with liquid. Concurrently sedimentation of extracted soil is drained from lower portion of face. Displacement of driving equipment relatively to guiding pipeline is performed along soft trajectory. Device has means for driving guiding pipeline and driving shield with rotor working implement. Rotor working implement is mounted on body of driving shield. Front surface of working implement with cutters extends beyond outer contour of shield cover, provided with back end compaction. Device is provided with fluid pump device. Force hose of pump is outputted from upward portion beyond outer contour of shield cover. Device for transporting extracted soil from face is made in form of suck-in hose connected to pump device and to lower portion of ring space beyond rotor working implement.
EFFECT: lower transverse loads on guiding pipeline.
2 cl, 1 dwg
FIELD: building, particularly for laying pipelines, for constructing buried passages during pipeline laying, laying cable lines and power lines.
SUBSTANCE: device has hollow conical working tip connected with stem through hinge and through rotary support. Stem is secured in rotary supports to flange mounted on front end of pipeline in the line of puncture direction. Installed in pipeline to be laid is vibrator drive connected to stem. Device has cage connected to stem, vibrator forming circular vibrations and made as unbalance. Unbalance is formed as hollow cylinder sector arranged inside working tip on rotary supports and connected to cage. Device also includes feeding mechanism.
EFFECT: increased operational efficiency.
FIELD: metal pipe driving.
SUBSTANCE: according to proposed method including change of value of backward stroke of striker interacting with operating resilient member and working liquid and stepless change of working liquid pressure at which striker changes from backward to forward stroke by changing force of preliminary compression of setting resilient member interacting with valve, it is proposed to control additional speed of valve forward stroke so that time of valve closing be not less than time of forward stroke of striker. Adjustable hydraulic impact machine contains striker unit and impact energy control device. Striker unit includes housing accommodating first working chamber, striker and operating resilient member. Impact energy control device is made in form of housing with second working chamber and valve interacting with setting resilient member. First and second working chambers are hydraulically coupled. Impact energy control device should be preferably equipped with valve forward stroke speed regulator including hydraulically independent shock-absorbing chamber with shock-absorbing liquid divided into upper and lower parts by ring-shock-absorbing piston arranged on valve. Upper and lower parts of shock-absorbing chamber are interconnected through channels, shutoff valve and restrictor.
EFFECT: enlarged sphere of application and improved reliability in operation.
3 cl, 1 tbl, 1 dwg
FIELD: mining industry, particularly devices for trenchless pipeline laying under roads and other engineering structures.
SUBSTANCE: rig comprises power cylinder with hollow shaft and support, hauling mechanism connected to cylinder and executive tool cooperating with ground and rig operation control means. All above components are put into a pit. Executive mechanism is formed as conical tip connected with rod separated into several chambers and passing into shaft. Power cylinder is made as hydraulic one, hauling mechanism comprises washer with slot and slider arranged in the slot. Washer is rotary installed on the shaft and is restricted from longitudinal displacement. Slider has control arm and figured orifice including hexahedron part and circle part. Each rod chamber is provided with outer groove with hexahedron cross-section mating to hexahedron part of slider orifice. Roller is installed on washer periphery. Secured to support is cam cooperating with roller. The rig is provided with transportable container installed in the pit and having body, bottom and hinged lid. The body comprises orifice for rod receiving and rod guide arranged inside the body. Each rod chamber has outer tapered thread formed on one end part thereof and inner tapered thread formed on opposite end thereof and mating outer one. Rig operation control means is provided with control panel. Conical tip includes radio transmitter to transmit signal indicating rig location in ground. Radio signal receiver linked with control panel is installed above ground surface.
EFFECT: simplified structure and increased reliability.
3 cl, 4 dwg
SUBSTANCE: device comprises screw pivotally connected with the conical working tip without permitting mutual rotation. The tip receives vibrator for generating circular vibrations. The vibrator is made of unbalance mounted on rotating bearings inside the conical working tip and is connected with the motor through a flexible shaft. The motor is mounted inside the additional housing connected with the working tip through a flexible link.
EFFECT: enhanced efficiency.
FIELD: mining industry and building, particularly equipment for trenchless pipe laying under roads and other engineering structures.
SUBSTANCE: device comprises rod and hollow bush connected thereto and enclosing ends of longitudinal composite reamer sections. Radial cut is formed in hollow bush. Rod is composed of sections having equal lengths. Each section comprises outer conical thread created from one section end and inner thread corresponding to outer one formed from opposite section end. Each section has annular groove with length equal to hollow bush thickness. Hollow bush cut encloses outer annular groove. Each section of composite reamer is installed on rod section and supported in two points spaced along section length. Each support point is formed as two mating hexahedrons.
EFFECT: increased structure simplicity and reliability.
FIELD: trenchless underground pipe laying.
SUBSTANCE: invention relates to trenchless laying of underground pipelines of considerable length and preset trajectory. Proposed punch includes body accommodating reciprocating striker with bore in rear part, spool getting into bore by larger diameter step with sliding. Spool consists of branch pipe secured in rear part of body and sleeve connected with branch pipe for sliding and spring-loaded relative to rear part of body with at least one radial pin getting into ring zigzag slot made on part fixed on body. Sleeve of spool encloses front part of its branch pipe, being spool larger diameter step, and said ring zigzag slot is made on outer surface of branch pipe. According to first design version, at least one radial hole is made on front parts of branch pipe and spool sleeve. According to second design version, flats are made additionally on outer surface of branch pipe displaced towards rear part of branch pipe. According to third design version each second cavity on rear side of ring zigzag slot is extended to side of rear part of branch pipe.
EFFECT: improved reliability and increased service life owing to making of pneumatic punch of closed type with reversing of delivery of compressed air simply by switching off and on.
7 cl, 19 dwg
FIELD: mining and building, particularly for trenchless pipeline laying under roads and other engineering structures.
SUBSTANCE: device comprises retaining wall arranged in pit. The retaining wall is adapted to cooperate with power equipment and ground and is formed as movable container having dimensions and formed of material, which provide collapse of container brought into contact with ground. Movable container comprises bottom with processing orifice, vertical cylindrical wall with handling lugs and hinged lid. Power equipment and operator's station are arranged inside the container. Storage vessels are located in lower side parts of movable container.
EFFECT: decreased load applied to ground and reduced support size.
FIELD: mining and building equipment, particularly to drive pipes and form holes in ground for following underground service pipeline laying.
SUBSTANCE: device comprises body, reciprocating hammer arranged in the body and having throttle channel and orifices for air inlet and discharge, as well as elastic valve. Body and hammer define forward stroke and reverse stroke chambers communicating with air supply pipeline through connection pipe. Collar with longitudinal slots is created on rear hammer end and adapted to communicate reverse stroke chamber with atmosphere. Body interior has several ledges. Elastic valve is installed on hammer between collar and above orifices. When the hammer is in its extreme front position inner cylindrical surface of body ledge having lesser diameter is in contact with outer cylindrical surface of elastic valve.
EFFECT: reduced compressed air consumption and increased stroke power due to decreased reverse stroke chamber size and prevention of air compression inside the reverse stroke chamber during forward hammer movement.
2 cl, 1 dwg