CN102677724A - Mechanical steel sleeve installation device and mechanical steel sleeve installation method - Google Patents
Mechanical steel sleeve installation device and mechanical steel sleeve installation method Download PDFInfo
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- CN102677724A CN102677724A CN2012101579934A CN201210157993A CN102677724A CN 102677724 A CN102677724 A CN 102677724A CN 2012101579934 A CN2012101579934 A CN 2012101579934A CN 201210157993 A CN201210157993 A CN 201210157993A CN 102677724 A CN102677724 A CN 102677724A
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 196
- 239000010959 steel Substances 0.000 title claims abstract description 196
- 238000009434 installation Methods 0.000 title claims abstract description 39
- 238000000034 method Methods 0.000 title claims abstract description 35
- 239000002002 slurry Substances 0.000 claims abstract description 94
- 238000005520 cutting process Methods 0.000 claims abstract description 80
- 238000002347 injection Methods 0.000 claims abstract description 31
- 239000007924 injection Substances 0.000 claims abstract description 31
- 238000011084 recovery Methods 0.000 claims description 54
- 238000005192 partition Methods 0.000 claims description 9
- 238000007789 sealing Methods 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 238000003466 welding Methods 0.000 claims description 6
- 230000000149 penetrating effect Effects 0.000 claims description 5
- 230000008602 contraction Effects 0.000 claims description 3
- 238000002360 preparation method Methods 0.000 abstract description 2
- 238000004064 recycling Methods 0.000 abstract 2
- 238000010276 construction Methods 0.000 description 7
- 239000011435 rock Substances 0.000 description 5
- 239000004575 stone Substances 0.000 description 4
- 238000005553 drilling Methods 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 238000009412 basement excavation Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000740 bleeding effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 235000013601 eggs Nutrition 0.000 description 1
- 238000005755 formation reaction Methods 0.000 description 1
- 239000003673 groundwater Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The invention provides a mechanical steel sleeve installation device. The device comprises a steel sleeve, a guide rail, a thrustor, a cutting machine head, a slurry charge pipe, a slurry discharge pipe, a steel wire rope, a steel wire rope guide pipe, a power device, a hydraulic station, a slurry treatment unit of a slurry discharge pump, a slurry charge pump, a drag reduction slurry filling pipe, a drag reduction slurry annular shunting device, a drag reduction slurry injection system and a rotary recycling system. The invention also provides a mechanical steel sleeve installation method. The method comprises the following working processes of: (1) site preparation; (2) equipment installation; (3) thrusting and cutting; (4) steel sleeve connection; (5) continuous thrusting; (6) the steel sleeve installing in place; (7) the cutting machine head recycling; and (8) the installation of the steel sleeve finishing. By using the mechanical steel sleeve installation device and the mechanical steel sleeve installation method provided by the invention, a dead hole can be excavated and the steel sleeve can be prepared and installed in place; and therefore, the device and the method are suitable for full geological type pipe installation, and are safe, reliable and high in installation efficiency.
Description
Technical Field
The invention relates to the technical field of trenchless pipeline laying, in particular to a mechanical steel sleeve mounting device and a mounting method thereof.
Background
The traditional horizontal directional drilling method for crossing sand layers, gravel layers and other formations difficult to form holes adopts a process method of tamping a sleeve to isolate gravel and eggs by using a pipe rammer. However, this method is not of a full geological type, and in recent years, failure has been occurring in practical applications. The main problems are the following four points: (1) the casing pipe is not tamped in place, for example, a directional drill at a certain river level passes through the casing pipe by a designed distance of 150 meters, and is actually tamped by only 50 meters, so that the directional drill cannot be constructed, and large excavation is changed. (2) The sinking degree of the end part of the sleeve is large (up to 4 degrees), so that the directional drilling track is changed, the crossing distance is lengthened, and the construction cost and time are increased. (3) Because of the high ground water level, the operation of fetching earth in the manual casing pipe can not be completed, and the mechanical spiral earth extractor is easy to be blocked by large gravels and can not be used. (4) Due to the fact that the length of the casing pipe is large, the friction resistance is large, the rammed steel casing pipe cannot completely penetrate into a hard rock stratum with the hardness of 60Mpa, and therefore the phenomena of slurry leakage and slurry bleeding during horizontal directional drilling and reaming are caused.
Disclosure of Invention
The invention aims to solve the technical problem of providing a mechanical steel sleeve mounting device and a mechanical steel sleeve mounting method, wherein the mechanical steel sleeve mounting device can be used for mechanically excavating blind holes and mounting long-distance steel sleeves.
In order to solve the technical problems, the invention provides a mechanical steel sleeve mounting device which comprises a steel sleeve, a guide rail, a pushing device, a cutting machine head, a slurry inlet pipe, a slurry discharge pipe, a steel wire rope guide pipe, a power device, a hydraulic station, a slurry treatment unit of a slurry discharge pump, a slurry inlet pump, a drag-reducing slurry injection pipe, a drag-reducing slurry annular shunting device, a drag-reducing slurry injection system and a rotary recovery system; the pushing device is fixed at a guide rail sending end and connected with the hydraulic station, the rear end of the steel sleeve abuts against the pushing device, the cutting machine head is installed at the front end of the steel sleeve, and the rotary recovery system is installed at the tail of the cutting machine head; the annular flow dividing device of the drag reduction mud and the drag reduction mud injection pipe are fixed on the outer wall of the front end of the steel sleeve, and the drag reduction mud injection pipe is connected with the drag reduction mud injection system; the slurry inlet pipe and the slurry discharge pipe are arranged inside the steel sleeve, the slurry inlet pipe is connected with the slurry inlet pump, and the slurry discharge pipe is connected with the slurry treatment unit of the slurry discharge pump; one end of the steel wire rope guide pipe is fixed on the pushing device, one end of the steel wire rope penetrates through the steel wire rope guide pipe and the pushing device and is connected to the U-shaped buckle in the middle of the tail end of the cutting machine head, and the other end of the steel wire rope is connected with the power device.
Furthermore, the head of the cutting machine head is provided with a movable cutter disc and a cutter disc fixing pin shaft for fixing the movable cutter disc, and the rear part of the cutting machine head is provided with an I-shaped steel bar which is matched with a [ -shaped steel bar arranged on the inner wall of the end part of the steel sleeve.
Furthermore, a rear clapboard is arranged at the tail part of the cutting machine head, and the rotary recovery system is arranged at the rear side of the rear clapboard.
Furthermore, the rotary recovery system is composed of a support frame, a hydraulic support leg, a rotary recovery hydraulic cylinder and a pin shaft, the hydraulic support leg and the rotary recovery hydraulic cylinder are fixed on the support frame, the hydraulic support leg is supported on the inner wall of the steel sleeve pipe after being extended, and an extending end of the rotary recovery hydraulic cylinder is fixed on the rear partition plate of the cutting machine head through the pin shaft when being contracted.
Furthermore, the annular flow dividing device for the drag reduction mud is an annular circular plate with an L-shaped cross section and is fixed on the outer wall of the steel sleeve, and the mud outlet end of the drag reduction mud injection pipe is positioned at the rear part of the annular flow dividing device for the drag reduction mud and is 4-6cm away from the annular flow dividing device for the drag reduction mud.
The invention also provides a mechanical steel sleeve installation method, which comprises the following steps: (1) preparing a site; (2) equipment installation; (3) jacking and cutting; (4) splicing a steel sleeve; (5) continuously jacking; (6) installing the steel sleeve in place; (7) withdrawing the cutting head; (8) completing the installation of the steel sleeve;
wherein the process (2) equipment installation comprises:
a) laying a guide rail, installing a pushing device, burying the steel wire rope guide pipe in the ground, and welding the left end of the steel wire rope guide pipe on the pushing device;
b) installing a water stop sealing ring, installing a cutting machine head, installing a rotary recovery system, and fixing the cutting machine head by the rotary recovery system through a rear partition plate for fixing the cutting machine head;
c) installing a resistance reducing slurry annular shunting device and a resistance reducing slurry injection pipe, installing a slurry inlet pipe and a slurry discharge pipe, and fixing a steel wire rope on a U-shaped buckle at the central part of the tail end of the cutting machine head by penetrating the steel wire rope guide pipe and the pushing device.
The step (7) of retracting the cutter head includes: connecting a steel wire rope with a power device, starting a rotary recovery system, and rotationally separating an I-shaped steel bar on a cutting machine head from a [ -shaped steel bar on the inner wall of a steel sleeve by means of torque provided by a rotary recovery hydraulic cylinder; then the power device is started to pull the cutting head, the movable cutter head of the cutting head is clamped at the end part of the steel sleeve, the movable cutter head is folded under the action of the tensile force of the steel wire rope, and the movable cutter head is folded and contracted to cut off the fixed pin shaft of the cutter head; and continuously starting the power device to pull the cutting head out of the steel sleeve.
Further, the method for installing the pushing device is that the pushing device is placed on the right side of the guide rail, and the pushing device and a back rest of the pushing device are welded and fixed together through a steel embedded part.
Furthermore, the method for installing the cutting machine head is to align the I-shaped steel bar on the cutting machine head to the gap of the [ -shaped steel bar on the inner wall of the steel sleeve and insert the cutting machine head so as to enable the end faces of the I-shaped steel bar and the [ -shaped steel bar to be tightly attached.
Furthermore, the method for installing the rotary recovery system is that the hydraulic support legs are adjusted to extend and support the hydraulic support legs on the inner wall of the steel sleeve to fix the whole rotary recovery system, the rotary recovery hydraulic cylinder is adjusted to be in a contraction state, and the extending end of the rotary recovery hydraulic cylinder is fixed on the rear partition plate of the cutting machine head adjacent to the rotary recovery hydraulic cylinder through a pin shaft.
The mechanical steel sleeve mounting device and the mounting method thereof provided by the invention have the following characteristics:
1) the blind hole can be dug, the steel sleeve is installed in place, and the telescopic cutting head can be integrally withdrawn from the sleeve; the device does not need personnel to enter and disassemble the device into parts and blocks to be transported out, thereby ensuring the safety of personnel under high water pressure and improving the construction efficiency.
2) Mechanical excavation and liquid slag discharge replace the traditional construction mode that the soil is taken out manually, so that the labor intensity of the workers is reduced; high efficiency, safety and reliability.
3) The casing pipe is of a full geological type, and can be installed on a sand layer, gravel stones, broken stones, larger stones (more than phi 100 mm) and rock layers with the compressive strength of 100 Mpa; the geological inadaptability and the limitation of the tamping hammer for tamping the casing pipe are broken through.
Drawings
FIG. 1 is a vertical cross-sectional view of a steel casing installation apparatus provided in an embodiment of the present invention.
FIG. 2 is a plan view of a steel casing installation apparatus provided in an embodiment of the present invention.
FIG. 3 is a vertical cross-sectional view of a rotary recovery system for a steel casing installation provided by an embodiment of the present invention.
FIG. 4 is a top view of a rotary recovery system for a steel casing installation provided by an embodiment of the present invention.
Fig. 5 is a schematic structural view of a drag reduction mud circumferential flow-dividing device of the steel casing installation device provided by the embodiment of the invention.
Fig. 6 is a schematic process diagram of an implementation method of a steel casing installation method according to an embodiment of the present invention.
Detailed Description
Referring to fig. 1 and 2, the mechanical steel casing installation device provided by the embodiment of the invention comprises a cutting head 1, a steel casing 2, a guide rail 5, a slurry inlet pipe 6, a slurry discharge pipe 7, a pushing device 8, a steel wire rope 9, a steel wire rope guide pipe 10, a power device 11, a hydraulic station 12, a slurry discharge pump slurry treatment unit 13, a slurry inlet pump 14, a rotary recovery system 16, a drag reduction slurry injection system 15, a drag reduction slurry injection pipe 21 and a drag reduction slurry annular diversion device 22. The guide rail 5 is anchored at the bottom of the operation pit 4, the pushing device 8 is fixed at the sending end of the guide rail 5, the pushing device 8 is connected with the hydraulic station 12, the rear end of the steel sleeve 2 abuts against the pushing device 8, the front end of the steel sleeve 2 is provided with the cutting machine head 1, and the tail part of the cutting machine head 1 is provided with the rotary recovery system 16; the annular flow dividing device 22 of the drag reduction mud and the injection pipe 21 of the drag reduction mud are fixed on the outer wall of the front end of the steel sleeve 2, and the injection pipe 21 of the drag reduction mud is connected with the injection system 15 of the drag reduction mud through a hose; the slurry inlet pipe 6 and the slurry discharge pipe 7 are arranged inside the steel sleeve 2, the other end of the slurry inlet pipe 6 is connected with a slurry inlet pump 14, and the other end of the slurry discharge pipe 7 is connected with a slurry treatment unit 13 of a slurry discharge pump; one end of a steel wire rope guide pipe 10 is fixed on the pushing device 8, one end of a steel wire rope 9 penetrates through the steel wire rope guide pipe 10 and the pushing device 8 to be connected to a U-shaped buckle in the middle of the tail end of the cutting machine head 1, and the other end of the steel wire rope is connected with a power device 11.
The head of the cutting machine head 1 is provided with a movable cutter head 24 and a cutter head fixing pin 23 for fixing the movable cutter head 24, the rear part of the cutting machine head 1 is provided with an I-shaped steel bar 20, and the inner wall of the end part of the steel sleeve 2 is provided with a [ -shaped steel bar 19 matched with the I-shaped steel bar 20.
Referring to fig. 3 and 4, a rear partition plate 28 is arranged at the tail of the cutting machine 1, a rotary recovery system 16 is arranged at the rear side of the rear partition plate 28, the rotary recovery system 16 is composed of a support frame 17, hydraulic legs 29, rotary recovery hydraulic cylinders 31 and pin shafts 30, the hydraulic legs 29 and the rotary recovery hydraulic cylinders 31 are fixed on the support frame 17 through bolts 32, the hydraulic legs 29 are supported on the inner wall of the steel sleeve 2 in an extending manner to fix the whole rotary recovery system 16, and the extending ends of the rotary recovery hydraulic cylinders 31 in a contracting state are fixed on the rear partition plate 28 of the cutting machine head 1 adjacent to the rotary recovery hydraulic cylinders through the pin shafts 30 to prevent the cutting machine head 1 from rotating; when recovery is required, the rotary recovery hydraulic cylinder 31 extends to provide torque to rotate the I-shaped steel bar 20 of the cutting head 1 to the gap 18 of the steel bar 19, and then the steel wire 9 is pulled out.
Referring to fig. 5, the annular flow-dividing device 22 of the drag reduction mud is an annular circular plate with an L-shaped cross section and is fixed on the outer wall of the front end of the steel sleeve 2, the drag reduction mud injection pipe 21 is welded on the outer wall of the front end of the steel sleeve 2, and the slurry outlet end of the drag reduction mud injection pipe 21 is located at the rear part of the annular flow-dividing device 22 of the drag reduction mud and is 4-6cm away from the annular flow-dividing device 22 of the drag reduction mud.
Referring to fig. 6, the method for installing a mechanical steel sleeve provided by the invention specifically comprises the following steps:
1) site preparation
Cleaning the site, excavating the sending operation pit 4 according to the construction requirements, and preparing a back wall 26 of the pushing device.
2) Installation of equipment
A. Laying a guide rail, and installing a pushing device: laying a guide rail 5 at the bottom of the operation pit, placing a pushing device 8 at the right side, and welding and fixing the pushing device 8 and a rear backrest 26 of the pushing device 8 together through a steel embedded part; the steel wire rope guide pipe 10 is buried in the ground layer 25, and the left end of the steel wire rope guide pipe is welded and fixed on the pushing device 8 and used for penetrating through the steel wire rope 9.
B. Installing a water-stop sealing ring 3 at the soil-entering point 27 to prevent the leakage of the resistance-reducing slurry injected in the jacking process of the steel sleeve, inserting the I-shaped steel bar 20 on the cutting head 1 into a gap 18 formed by the [ -shaped steel bar welded on the inner wall of the steel sleeve 2 in an aligning manner, and rotating the cutting head 1 to enable the I-shaped steel bar 20 to be tightly attached to the end face of the [ -shaped steel bar 19; the rotary recovery system 16 is arranged at the rear side of the cutting machine head rear clapboard 28, the hydraulic support legs 29 of the rotary recovery system 16 extend and support on the inner wall of the steel sleeve 2 to fix the whole rotary recovery system 16, and the extending end of the rotary recovery hydraulic cylinder 31 in a contraction state is fixed on the rear clapboard 28 of the adjacent cutting machine head 1 through a pin shaft 30 to prevent the cutting machine head 1 from rotating; finally, the cutting head 1 and the steel sleeve 2 are placed on the guide rail 5 by a crane.
C. Installing pipelines: the method comprises the following steps that a resistance-reducing mud annular shunting device 22 is arranged outside a steel sleeve 2, a resistance-reducing mud injection pipe 21 is welded outside the steel pipe, and the rear end part of the resistance-reducing mud injection pipe 21 is connected with a resistance-reducing mud injection system 15 through a hose; a slurry inlet pipe 6 and a slurry discharge pipe 7 are arranged in the steel pipe, the other end of the slurry inlet pipe 6 is connected with a slurry inlet pump 14, and the other end of the slurry discharge pipe 7 is connected with a slurry treatment unit 13 of a slurry discharge pump; the steel wire rope 9 is fixed to the central part of the tail end of the cutting machine head 1 through a U-shaped buckle.
3) Plunge cutting
Starting the cutting machine head 1, the pushing device 8 and the drag reduction slurry injection system 15, slowly feeding the steel sleeve 2 into the water stop sealing ring 3, driving the pushing device 8 to push the steel sleeve 2 through the hydraulic station 12, normally jacking under the continuous cutting of the cutting machine head 1, and discharging the cut rock debris from the slurry discharge pipe 7.
4) Steel sleeve connection
After the first steel sleeve is jacked in, the oil cylinder of the jacking device 8 is retracted, the next steel sleeve (with the length of 10 m) is hoisted, and the two steel sleeves are aligned and manually welded together through an external pipe aligning device; the slurry inlet pipe 6 and the slurry discharge pipe 7 are communicated again; welding the continuous drag reduction slurry injection pipe 21, and connecting the continuous and prolonged drag reduction slurry injection pipe 21 with the drag reduction slurry injection system 15 by a hose.
5) And continuing jacking according to the step 3).
6) And (4) completing jacking and then continuing with a new steel sleeve, and repeating the steps 4) and 5).
7) The steel sleeve is mounted in place and the cutting head is retracted.
After the steel sleeve is installed in place, the slurry inlet pipe 6 and the slurry discharge pipe 7 are disassembled, and the steel wire rope 9 penetrates through the steel wire rope guide pipe 10 and is connected with a power device 11 (such as an excavator); the rotary recovery system 16 is started, the rotary recovery hydraulic cylinder 31 extends out, torque is provided to rotate the I-shaped steel bar 20 of the cutting head 1 to the gap 18 of the [ -shaped steel bar 19 on the inner wall of the steel sleeve 2, the power device 11 is started to pull the cutting head 1 through the steel wire rope 9, the movable cutter head 24 of the cutting head 1 is clamped at the end of the steel sleeve 2, the movable cutter head 24 is folded and contracted under the action of the tensile force of the steel wire rope 9 and cuts off the cutter head fixing pin shaft 23, and the power device 11 is continuously started to pull the cutting head 1 out of the steel sleeve 2.
8) And (5) dismantling the construction equipment, and finishing the installation of the steel sleeve.
The mechanical steel sleeve installation method provided by the invention is explained by specific embodiments, the embodiments are suitable for a pebble layer, the maximum diameter of a stone block is 500mm, the maximum compressive strength of the rock is 85MPa, the underground water pressure is 0.2MPa, the length of the installed steel sleeve is 191m, the diameter phi 2064mm, and the soil penetration angle is 16 degrees, and the specific scheme is as follows:
after entering a construction site, arranging and installing required equipment according to a vertical section view of a steel sleeve installation device shown in a figure 1 and a plane arrangement view of the steel sleeve installation device shown in a figure 2, laying a guide rail 5 at the bottom of an operation pit 4, placing a pushing device 8 at the right side, and firmly fixing the pushing device with a stratum 25 and a pushing device back rest 26, embedding a steel wire rope guide pipe 10 in the stratum 25, and welding and fixing the left end of the steel wire rope guide pipe on the pushing device 8 for penetrating through a steel wire rope 9; installing a water-stopping sealing ring 3 at the soil-entering point 27, installing the cutting machine head 1 in the steel sleeve 2 and hoisting the cutting machine head on the guide rail 5; a slurry inlet pipe 6 and a slurry discharge pipe 7 are arranged inside the steel sleeve 2, the slurry inlet pipe 6 is connected with a slurry inlet pump 14, and the slurry discharge pipe 7 is connected with a slurry treatment unit 13 of a slurry discharge pump; the steel wire rope 9 is connected to a U-shaped buckle at the central part of the tail end of the cutting machine head 1.
And starting the cutting machine head 1, the pushing device 8 and the resistance-reducing slurry injection system 15, slowly sending the steel sleeve 2 into the water-stopping sealing ring 3, then normally pushing in, and discharging the cut rock debris from the slurry discharge pipe 7.
After a first steel sleeve is jacked in, an oil cylinder of a jacking device 8 is retracted, another steel sleeve (with the length of 10 m) is hoisted, the two steel sleeves are welded together, a slurry inlet pipe 6 and a slurry discharge pipe 7 are communicated again, a slurry blocking injection pipe 21 is welded and communicated, after the steel sleeves are installed in place, the slurry inlet pipe 6 and the slurry discharge pipe 7 are disassembled, a steel wire rope 9 penetrates through the steel wire rope guide pipe 10 and is connected with a power device 11 (such as an excavator), a rotary recovery hydraulic cylinder 16 is started, a cutter head 1 is rotated and separated from a [ -shaped steel strip 19 in the steel sleeve 2 by means of torque provided by the rotary recovery hydraulic cylinder 16, the power device 11 (such as an excavator) is started to pull the cutter head 1 through the steel wire rope 9, a movable cutter disc 24 of the cutter head 1 is clamped at the end part of the steel sleeve 2, the movable cutter disc 24 is folded and retracted under the tensile force of the steel wire rope to cut a cutter head fixing pin 23, the power device 11, and finally, dismantling the construction equipment, and finishing the installation of the steel sleeve.
The mechanical steel sleeve installation method provided by the invention can be used for installing the steel sleeve in place and penetrating into bedrock for 20m through field application, and the cutting machine head can be smoothly and integrally withdrawn from the sleeve. The measurement shows that the mounting position of the sleeve is accurate and the end part does not sink obviously. The geological conditions are a gravel layer with the maximum diameter of 500mm, the maximum compressive strength of 85MPa and the underground water pressure of 0.2 MPa. Engineering practices show that the mechanical steel sleeve installation method accords with engineering practice, and the cutting machine head recovery scheme is reasonable, simple and reliable and has no clamping phenomenon. The design goal is achieved.
Finally, it should be noted that the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to examples, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, which should be covered by the claims of the present invention.
Claims (9)
1. A mechanical type steel casing installation device which characterized in that: the device comprises a steel sleeve, a guide rail, a pushing device, a cutting machine head, a slurry inlet pipe, a slurry discharge pipe, a steel wire rope guide pipe, a power device, a hydraulic station, a slurry discharge pump slurry treatment unit, a slurry inlet pump, a resistance-reducing slurry injection pipe, a resistance-reducing slurry circumferential shunting device, a resistance-reducing slurry injection system and a rotary recovery system; the pushing device is fixed at a guide rail sending end and connected with the hydraulic station, the rear end of the steel sleeve abuts against the pushing device, the cutting machine head is installed at the front end of the steel sleeve, and the rotary recovery system is installed at the tail of the cutting machine head; the annular flow dividing device of the drag reduction mud and the drag reduction mud injection pipe are fixed on the outer wall of the front end of the steel sleeve, and the drag reduction mud injection pipe is connected with the drag reduction mud injection system; the slurry inlet pipe and the slurry discharge pipe are arranged inside the steel sleeve, the slurry inlet pipe is connected with the slurry inlet pump, and the slurry discharge pipe is connected with the slurry treatment unit of the slurry discharge pump; one end of the steel wire rope guide pipe is fixed on the pushing device, one end of the steel wire rope penetrates through the steel wire rope guide pipe and the pushing device and is connected to the U-shaped buckle in the middle of the tail end of the cutting machine head, and the other end of the steel wire rope is connected with the power device.
2. The mechanical steel casing installation device of claim 1, wherein: the head of the cutting machine head is provided with a movable cutter disc and a cutter disc fixing pin shaft for fixing the movable cutter disc, and the rear part of the cutting machine head is provided with an I-shaped steel bar which is matched with the [ -shaped steel bar arranged on the inner wall of the end part of the steel sleeve.
3. The mechanical steel casing installation device of claim 2, wherein: the tail part of the cutting machine head is provided with a rear clapboard, and the rear side of the rear clapboard is provided with the rotary recovery system.
4. The mechanical steel casing installation device of claim 3, wherein: the rotary recovery system is composed of a support frame, hydraulic support legs, a rotary recovery hydraulic cylinder and a pin shaft, the hydraulic support legs and the rotary recovery hydraulic cylinder are fixed on the support frame, the hydraulic support legs are supported on the inner wall of the steel sleeve pipe after being extended, and the extending ends of the rotary recovery hydraulic cylinder are fixed on the rear partition plate of the cutting machine head through the pin shaft when being contracted.
5. The mechanical steel casing installation device of claim 1, wherein: the annular flow dividing device for the anti-drag slurry is an annular circular plate with an L-shaped section and is fixed on the outer wall of the steel sleeve, and the slurry outlet end of the anti-drag slurry injection pipe is positioned at the rear part of the annular circular plate with the L-shaped section and is 4-6cm away from the annular circular plate with the L-shaped section.
6. A method of installing a steel casing using the apparatus of claim 1, comprising the steps of: (1) preparing a site; (2) equipment installation; (3) jacking and cutting; (4) splicing a steel sleeve; (5) continuously jacking; (6) installing the steel sleeve in place; (7) withdrawing the cutting head; (8) completing the installation of the steel sleeve; wherein,
the step (2) of installing equipment comprises the following steps:
a) laying a guide rail, installing a pushing device, burying the steel wire rope guide pipe in the ground, and welding the left end of the steel wire rope guide pipe on the pushing device;
b) installing a water stop sealing ring, installing a cutting machine head, installing a rotary recovery system, and fixing the cutting machine head by the rotary recovery system through a rear partition plate for fixing the cutting machine head;
c) installing a resistance-reducing mud annular shunting device and a resistance-reducing mud injection pipe, installing a mud inlet pipe and a mud discharge pipe, and fixing a steel wire rope on a U-shaped buckle at the central part of the tail end of the cutting machine head by penetrating through a steel wire rope guide pipe and a pushing device;
the step (7) of retracting the cutter head includes: connecting a steel wire rope with a power device, starting a rotary recovery system, and rotationally separating an I-shaped steel bar on a cutting machine head from a [ -shaped steel bar on the inner wall of a steel sleeve by means of torque provided by a rotary recovery hydraulic cylinder; then the power device is started to pull the cutting head, the movable cutter head of the cutting head is clamped at the end part of the steel sleeve, the movable cutter head is folded under the action of the tensile force of the steel wire rope, and the movable cutter head is folded and contracted to cut off the fixed pin shaft of the cutter head; and continuously starting the power device to pull the cutting head out of the steel sleeve.
7. The steel casing installation method of claim 6, wherein: the method for installing the pushing device comprises the steps of placing the pushing device on the right side of the guide rail, and welding and fixing the pushing device and a back rest of the pushing device together through a steel embedded part.
8. The steel casing installation method of claim 6, wherein: the method for mounting the cutting machine head comprises the steps of aligning an I-shaped steel bar on the cutting machine head to a gap of a [ -shaped steel bar on the inner wall of a steel sleeve, inserting the I-shaped steel bar into the gap and rotating the cutting machine head to enable the end faces of the I-shaped steel bar and the [ -shaped steel bar to be tightly attached.
9. The steel casing installation method of claim 6, wherein: the method for installing the rotary recovery system comprises the steps of adjusting the hydraulic support legs to enable the hydraulic support legs to extend and be supported on the inner wall of the steel sleeve to fix the whole rotary recovery system, adjusting the rotary recovery hydraulic cylinder to be in a contraction state, and enabling the extending end of the rotary recovery hydraulic cylinder to be fixed on the rear partition plate of the cutting machine head adjacent to the rotary recovery hydraulic cylinder through a pin shaft.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210157993.4A CN102677724B (en) | 2012-05-21 | 2012-05-21 | Mechanical steel sleeve installation device and mechanical steel sleeve installation method |
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| CN201210157993.4A CN102677724B (en) | 2012-05-21 | 2012-05-21 | Mechanical steel sleeve installation device and mechanical steel sleeve installation method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110206566A (en) * | 2019-06-04 | 2019-09-06 | 湖北建科国际工程有限公司 | Excavating device and excavation method for tunnel crushed zone hole |
| CN113994781A (en) * | 2021-10-31 | 2022-02-01 | 唐明松 | Agricultural soil chemical fertilizer diffuser |
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| CN1136126A (en) * | 1995-05-01 | 1996-11-20 | 日立建机株式会社 | Borehole boring method and machine |
| JP3681351B2 (en) * | 2001-03-30 | 2005-08-10 | 機動建設工業株式会社 | Apparatus and method for repairing existing pipeline |
| US20040118608A1 (en) * | 2002-12-19 | 2004-06-24 | Marc Haci | Method of and apparatus for directional drilling |
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| CN2783084Y (en) * | 2005-04-04 | 2006-05-24 | 常崧鹏 | Tap type tool pipe for pipe jacking machine |
| CN1752501A (en) * | 2005-10-08 | 2006-03-29 | 上海隧道工程股份有限公司 | Reaming type mud and water balance micro-push bench |
| CN101055047A (en) * | 2007-04-18 | 2007-10-17 | 中国石油天然气管道局穿越分公司 | A process for horizontal directional drill passing through and tampering casing for separating gravel |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110206566A (en) * | 2019-06-04 | 2019-09-06 | 湖北建科国际工程有限公司 | Excavating device and excavation method for tunnel crushed zone hole |
| CN113994781A (en) * | 2021-10-31 | 2022-02-01 | 唐明松 | Agricultural soil chemical fertilizer diffuser |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102677724B (en) | 2014-06-04 |
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Effective date of registration: 20170301 Address after: 100007 Dongcheng District, Dongzhimen, China, North Street, No. 9 Oil Mansion, No. Patentee after: China National Petroleum Corporation Patentee after: China Petroleum Pipeline Bureau Engineering Co., Ltd. Address before: 100007 Dongcheng District, Dongzhimen, China, North Street, No. 9 Oil Mansion, No. Patentee before: China National Petroleum Corporation Patentee before: China Petroleum and Natural Gas Pipeline Bureau |