CN111211535B - Pipe jacking device and pipe jacking construction process - Google Patents
Pipe jacking device and pipe jacking construction process Download PDFInfo
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- CN111211535B CN111211535B CN202010109636.5A CN202010109636A CN111211535B CN 111211535 B CN111211535 B CN 111211535B CN 202010109636 A CN202010109636 A CN 202010109636A CN 111211535 B CN111211535 B CN 111211535B
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G9/00—Installations of electric cables or lines in or on the ground or water
- H02G9/04—Installations of electric cables or lines in or on the ground or water in surface ducts; Ducts or covers therefor
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/045—Underground structures, e.g. tunnels or galleries, built in the open air or by methods involving disturbance of the ground surface all along the location line; Methods of making them
- E02D29/05—Underground structures, e.g. tunnels or galleries, built in the open air or by methods involving disturbance of the ground surface all along the location line; Methods of making them at least part of the cross-section being constructed in an open excavation or from the ground surface, e.g. assembled in a trench
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- General Life Sciences & Earth Sciences (AREA)
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- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
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Abstract
The invention relates to the technical field of pipe jacking construction, in particular to a pipe jacking device and a pipe jacking construction process, which comprise a conical jacking head arranged at one end of a pipeline, wherein a hollow cylinder matched with the pipeline is arranged inside the pipeline, a limiting part used for fixing or separating the hollow cylinder and the pipeline relatively is arranged between the hollow cylinder and the pipeline, two ends of the hollow cylinder are flush with two ends of the pipeline, one end of the hollow cylinder, far away from the jacking head, is provided with a connector, the inner diameter of the connector is the same as that of the hollow cylinder, and the outer diameter of the connector is smaller than that of the hollow cylinder, one end of the hollow cylinder is provided with a threaded groove matched with the connector, and one end of the pipeline, far away from the jacking head, is provided with a driving assembly for driving the hollow cylinder and the pipeline to move along the axis direction of the hollow cylinder and the.
Description
Technical Field
The invention relates to the technical field of pipe jacking construction, in particular to a pipe jacking device and a pipe jacking construction process.
Background
With the development of social economy, the power cable is widely applied by virtue of the characteristics of safe operation, less maintenance, attractive appearance and the like.
It is often necessary to dig a trench in the ground prior to laying the cable and then to lay the pipeline within the trench. However, after the pipeline is laid, the original pattern of the road surface cannot be recovered, which may affect the greening of the road side, and the excavated sand and stone may affect the environment after being washed by rainwater.
Disclosure of Invention
The invention aims to provide a pipe jacking device and a pipe jacking construction process, which achieve the effects of reducing the workload of groove excavation, saving time and labor and reducing the possibility of environmental pollution.
The technical purpose of the invention is realized by the following technical scheme:
the utility model provides a pipe jacking device, including setting up the conical top in pipeline one end, the pipeline is inside to be provided with the hollow section of thick bamboo with pipeline looks adaptation, it is used for making both relatively fixed or the locating part of separation to set up between hollow section of thick bamboo and the pipeline, the both ends of hollow section of thick bamboo are leveled mutually with the both ends of pipeline, the one end that the top was kept away from to hollow section of thick bamboo is provided with the internal diameter and is the same with hollow section of thick bamboo, the external diameter is less than the connector of hollow section of thick bamboo external diameter, the thread groove with connector looks adaptation is seted up to hollow section of thick bamboo's one end, the one end that the top was.
By adopting the scheme, when people need to lay the pipeline, firstly, a pipeline groove is excavated at a construction position appointed by the ground, the pipeline and the pipe jacking device are placed in the pipeline groove, the hollow cylinder is inserted into the pipeline, and the position of the hollow cylinder and the position of the pipeline can be kept relatively fixed by the limiting piece; then, the driving assembly is started, the driving assembly can drive the hollow cylinder and the pipeline to move along the axis direction of the driving assembly, and therefore the driving assembly can drive the pipeline to be inserted into the ground through the hollow cylinder and the ejector; after the first pipeline is installed, people insert the hollow cylinder into the second pipeline according to the method of the first pipeline, and enable the connector of one hollow cylinder to be in threaded fit with the other threaded groove, so that the ends, close to each other, of the two pipelines are in sealing abutting joint, the driving assembly is started again, the driving assembly can push the second pipeline into the ground, and according to the operation method, the laying process of the pipelines can be completed, so that the effects of reducing the workload of groove excavation, saving time and labor and reducing the possibility of environmental pollution are achieved; after the pipeline is laid, people can remove the locating action of the locating part on the hollow cylinder and the pipeline, so that the hollow cylinder can be pulled out from the inside of the pipeline, and people can conveniently insert a cable into the inside of the pipeline.
The pipeline positioning device is further provided with a driving assembly, wherein the driving assembly comprises a driving block arranged in the hollow cylinder and a driving rod coaxially arranged in the hollow cylinder, the driving block extends into the driving rod, a driving groove for the driving block to slide is formed in the driving rod, a positioning block for limiting the pipeline is arranged on the outer surface of the pipeline, and a driving piece for driving the driving rod to rotate is arranged at one end of the driving rod.
Through adopting above-mentioned scheme, when needing to use drive assembly, people can open the driving piece, and the driving piece drives the actuating lever and rotates in hollow section of thick bamboo is inside, and actuating lever pivoted in-process can drive the drive block and slide in the drive inslot, so the drive block can drive hollow section of thick bamboo and pipeline removal.
The invention is further arranged in that the driving part comprises a driving motor, the driving motor drives the driving rod to rotate through a belt and a belt pulley, and the belt pulley is detachably connected with the driving rod.
By adopting the scheme, when the driving piece is needed, people only need to start the driving motor; after a pipeline is installed, people can detach the belt pulley from the driving rod, and therefore the pipe jacking device can be conveniently used by people.
The limiting part comprises a limiting block arranged inside the pipeline, a sliding groove matched with the limiting block is formed in the surface of the hollow cylinder along the axis direction of the hollow cylinder, the sliding groove penetrates through two end faces of the hollow cylinder, and a fixing groove communicated with the sliding groove is formed in the circumferential direction of the hollow cylinder.
By adopting the scheme, when the pipeline is installed, the limiting block is positioned in the fixing groove, so that the position relation between the hollow cylinder and the pipeline can be relatively fixed; when the hollow cylinder needs to be pulled out from the inside of the pipeline, people rotate the hollow cylinder in the pipeline until the limiting block moves into the sliding groove.
The invention is further arranged in that the outer side of the pipeline is provided with an auxiliary component for positioning the pipeline.
Through adopting above-mentioned scheme, when using pipe jacking device to push the pipeline into ground inside, auxiliary assembly can prescribe a limit to the position of pipeline, reduces the pipeline and the possibility that position offset appears in the in-process of installation.
The auxiliary assembly comprises first auxiliary rollers arranged on the left side and the right side of the pipeline, the axes of the first auxiliary rollers are vertical, first support rods are arranged at two ends of each first auxiliary roller, and the first auxiliary rollers are rotatably connected with the first support rods and can move on the first support rods in the directions close to or away from each other.
By adopting the scheme, before the pipeline is installed, people can adjust the distance between the two first auxiliary rollers according to the outer diameter of the pipeline; when installing the pipeline, the pipeline can remove between two first auxiliary rollers to can drive two first auxiliary rollers and rotate on first bracing piece.
The pipeline conveying device is further provided with two second auxiliary rollers arranged on the upper side and the lower side of the pipeline, the axes of the second auxiliary rollers are horizontal, second support rods are arranged at two ends of the first auxiliary roller, the second auxiliary rollers are rotatably connected with the second support rods, and the two second auxiliary rollers can move on the second support rods in the direction of approaching to or departing from each other.
By adopting the scheme, before the pipeline is installed, people can adjust the distance between the two second auxiliary rollers according to the outer diameter of the pipeline; when installing the pipeline, the pipeline can remove between two second auxiliary rollers to can drive two second auxiliary rollers and rotate on the second bracing piece.
The invention is further arranged that the surface of the top is provided with a sand discharge hole communicated with the inside of the hollow cylinder.
By adopting the scheme, in the process of installing the pipeline, sand and soil in the ground can enter the hollow cylinder through the sand discharge hole, so that the pressure of the ground on the pipeline can be reduced; when pulling out hollow section of thick bamboo from the pipeline is inside, the outside of pipeline is taken to the sand and soil that hollow section of thick bamboo can be inside, can make things convenient for people to establish cable etc. at the inside cluster of pipeline like this.
The invention is further arranged in that a limiting rod is arranged on the outer surface of the pipeline, and the extending direction of the limiting rod is the same as the axial direction of the pipeline.
Through adopting above-mentioned scheme, carry out the in-process of installing to the pipeline, the gag lever post on the pipeline can carry on spacingly to the pipeline, can avoid pipeline and hollow section of thick bamboo to rotate along with the actuating lever like this.
A pipe jacking construction process is characterized in that: the method comprises the following steps:
s1, excavating a pipeline groove for placing a pipeline at a construction position;
s2, placing the auxiliary component inside the pipeline groove, and adjusting the distance between the two first auxiliary rollers and the distance between the two second auxiliary rollers according to the diameter of the pipeline;
s3, inserting the driving rod into the hollow cylinder;
s4, inserting the hollow cylinder provided with the driving rod into the pipeline;
s5, inserting the pipe provided with the hollow cylinder into the auxiliary assembly, and mounting the belt pulley on the driving rod at one end of the pipe far away from the top head;
s6, starting a driving motor, driving the driving rod to rotate by the driving motor, and driving the pipeline to be inserted into the ground by the driving rod;
and S7, taking out the hollow cylinder in the pipeline and the sand in the hollow cylinder.
In summary, the present invention has the following technical effects:
1. by arranging the pipe jacking device, when a pipeline needs to be laid and installed, people can excavate a pipeline groove at a specified position on the ground, and then use the pipe jacking device to jack the pipeline into the ground, so that the effects of reducing the workload of groove excavation, saving time and labor and reducing the possibility of environmental pollution are achieved;
2. by arranging the hollow cylinder, the hollow cylinder can be convenient for a person to connect two pipelines, and the effect of improving the working efficiency of workers is achieved;
3. through having set up auxiliary assembly, the in-process of installing is carried out the pipeline to the pipeline, and auxiliary assembly can carry on spacingly to the pipeline, has reached the installation accuracy who improves the pipeline, reduces at the pipe jacking in-process, and the pipeline position takes place the effect of skew.
Drawings
FIG. 1 is an overall configuration view of a pipe jacking device;
FIG. 2 is an overall structural view of a hollow cylinder;
FIG. 3 is a state diagram of the present invention in use;
FIG. 4 is an end view of the pipe;
FIG. 5 is a view of an end face of the hollow cylinder;
fig. 6 is a partially enlarged view of a portion a in fig. 1.
In the figure, 1, a pipeline; 2. a pipe jacking device; 21. ejecting the head; 211. a sand discharge hole; 22. a hollow cylinder; 221. a thread groove; 222. a sliding groove; 223. fixing grooves; 23. a limiting block; 24. a connector; 25. a drive assembly; 251. a drive block; 252. a drive rod; 253. positioning blocks; 254. a drive member; 2541. a drive motor; 2542. a belt pulley; 2543. a belt; 3. an auxiliary component; 31. a first auxiliary roller; 32. a first support bar; 33. a first adjustment member; 331. a bidirectional lead screw; 332. a travel bar; 333. a T-shaped block; 34. a second auxiliary roller; 35. a second support bar; 36. a second adjustment member; 4. a pipeline groove.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Example one
Referring to fig. 1 and 2, the present invention provides a pipe jacking device, including a top 21, a hollow cylinder 22, a limiting member, a connecting member and a driving assembly 25, wherein the cross-sectional shape of the top 21 is conical, the top 21 is disposed on the end surface of a first pipe 1, the length of the hollow cylinder 22 is the same as that of a single pipe 1, the hollow cylinder 22 is coaxially disposed inside the pipe 1, the outer surface of the hollow cylinder 22 abuts against the inner wall of the pipe 1, a sand discharge hole 211 communicated with the inside of the hollow cylinder 22 is disposed on the surface of the top 21, the limiting member is disposed between the hollow cylinder 22 and the pipe 1, the connecting member is disposed on the hollow cylinder 22, and the driving assembly 25 is disposed on one side of the pipe 1.
Referring to fig. 3, when pipe jacking work is required, people firstly excavate a pipeline groove 4 for placing a pipeline 1 at a specified position on one side of a road, and then place the pipeline 1 to be used and a pipe jacking device 2 in the pipeline groove 4; then insert a plurality of pipelines 1 with hollow section of thick bamboo 22 inside, and make hollow section of thick bamboo 22 and pipeline 1 keep relatively fixed through the locating part, then make the top 21 pointed end on the pipeline 1 inside towards ground, open drive assembly 25, drive assembly 25 can drive hollow section of thick bamboo 22 and remove to the direction that is close to ground along self axis, hollow section of thick bamboo 22 will drive pipeline 1 and remove to the direction that is close to ground inside together like this, the process of push pipe has just so been accomplished, the work load that has reduced the slot excavation has been reached, save time and manpower, reduce the effect to the possibility that causes the pollution of environment.
Referring to fig. 2, the connecting piece includes a connector 24, the connector 24 is coaxially disposed on the end of the hollow cylinder 22 far away from the plug 21, the connector 24 is fixedly connected with the connector, the inner diameter of the connector 24 is the same as the inner diameter of the hollow cylinder 22, the outer diameter of the connector 24 is smaller than the outer diameter of the hollow cylinder 22, and the end of the hollow cylinder 22 close to the plug 21 is provided with a thread groove 221 capable of being in thread fit with the connector 24. When two pipelines 1 need to be connected, the connecting head 24 of one hollow cylinder 22 is matched with the thread groove 221 on the other hollow cylinder 22.
Referring to fig. 4, the limiting member includes a limiting member 23 fixedly disposed on the inner wall of the pipeline 1, the limiting member 23 extends into the hollow cylinder 22, a sliding groove 222 for sliding the limiting member 23 is disposed on the hollow cylinder 22 along the axis direction of the hollow cylinder 22, the sliding groove 222 penetrates through two end faces of the hollow cylinder 22, a fixing groove 223 communicated with the sliding groove 222 is disposed on the surface of the hollow cylinder 22 along the circumferential direction of the hollow cylinder 22, and the fixing groove 223 is matched with the limiting member 23. When the hollow cylinder 22 and the pipeline 1 need to be kept relatively fixed, the limiting block 23 is positioned inside the fixing groove 223; when the hollow cylinder 22 needs to be pulled out from the inside of the pipeline 1, the hollow cylinder 22 is rotated inside the pipeline 1 until the stop block 23 enters the sliding groove 222.
Referring to fig. 1 and 5, the driving assembly 25 includes a driving block 251, a driving rod 252, a positioning block 253, and a driving member 254, the driving block 251 is disposed inside the hollow cylinder 22, the driving rod 252 is coaxially disposed inside the hollow cylinder 22, an outer surface of the driving rod 252 abuts against an inner surface of the hollow cylinder 22, a driving groove for the driving block 251 to move is disposed on the outer surface of the driving rod 252, the positioning block 253 is disposed on an outer surface of the pipeline 1, a length direction of the positioning block 253 is the same as an axial direction of the pipeline 1, and the driving member 254 is disposed on one side of the pipeline 1 and can drive the driving rod 252 to rotate. When the driving assembly 25 needs to be used, the driving member 254 is turned on, the driving member 254 drives the driving rod 252 to rotate, the driving rod 252 drives the driving block 251 to move in the driving groove of the driving rod 252, the positioning block 253 can limit the position of the pipeline 1, and the possibility that the pipeline 1 and the hollow cylinder 22 rotate along with the driving rod 252 is reduced.
Referring to fig. 1, the driving member 254 includes a driving motor 2541, a spline, two pulleys 2542 and a belt 2543, the driving rod 252 extends to the outside of the pipeline 1 at an end away from the plug 21, wherein the pulleys 2542 are disposed on an output shaft of the driving motor 2541, and one of the pulleys 2542 is detachably mounted on the end of the driving rod 252 away from the plug 21 through the spline.
Referring to fig. 1, in order to reduce the possibility of displacement of the pipe 1 during use of the pipe jacking device 2, an auxiliary assembly 3 for positioning the pipe 1 is provided outside the pipe 1.
Referring to fig. 1, the auxiliary assembly 3 includes two first auxiliary rollers 31, two first support rods 32, two first adjusting members 33, two second auxiliary rollers 34, two second support rods 35 and two second adjusting members 36, the two first auxiliary rollers 31 are vertically disposed on the left and right sides of the pipeline 1, the two first support rods 32 are disposed on the upper and lower sides of the two first auxiliary rollers 31, the first auxiliary rollers 31 are rotatably connected to the first support rods 32, the first adjusting members 33 are disposed on the first support rods 32, and the first adjusting members 33 can drive the two first support rods 32 to move toward or away from each other; the second auxiliary roller 34 is located on one side of the first auxiliary roller 31, the number of the second auxiliary rollers 34 is two, the two second auxiliary rollers 34 are respectively horizontally arranged on the upper side and the lower side of the pipeline 1, the second support rod 35 is arranged at two ends of the second auxiliary roller 34, the second auxiliary roller 34 is rotatably connected with the second support rod 35, the second adjusting piece 36 is identical to the first adjusting piece 33 in structure, and the second adjusting piece 36 is arranged on the second support rod 35 and can drive the two second auxiliary rollers 34 to move towards or away from each other.
Before pipe jacking, people firstly need to adjust the distance between the two first auxiliary rollers 31 through the first adjusting piece 33 and adjust the distance between the two second auxiliary rollers 34 through the second adjusting piece 36 according to the diameter of the pipeline 1 until the first auxiliary rollers 31 and the second auxiliary rollers 34 are in contact with the peripheral surface of the pipeline 1, so that the first auxiliary rollers 31 and the second auxiliary rollers 34 can limit the pipeline 1.
Referring to fig. 1 and 6, the first adjusting member 33 includes a bidirectional screw 331, a moving rod 332, and T-shaped blocks 333, the moving rod 332 is disposed inside the first auxiliary roller 31, the T-shaped blocks 333 are disposed at both ends of the moving rod 332, the T-shaped blocks 333 are embedded inside the first support rod 32, a guide groove for the movement of the T-shaped blocks 333 is opened on the first support rod 32, the extending direction of the bidirectional screw 331 is the same as the extending direction of the first support rod 32, the bidirectional screw 331 is disposed inside the guide groove of the upper support rod and rotatably connected to the first support rod 32, and the bidirectional screw 331 penetrates through the two T-shaped blocks 333 and is threadedly connected to the two T-shaped blocks 333. When the position of the first auxiliary roller 31 or the second auxiliary roller 34 needs to be adjusted, the bidirectional screw 331 may be rotated.
Example two
A pipe jacking construction process comprises the following steps:
s1, excavating a pipeline groove 4 for placing the pipeline 1 at a construction position;
s2, placing the auxiliary component 3 inside the pipe chute 4, and adjusting the distance between the two first auxiliary rollers 31 and the distance between the two second auxiliary rollers 34 according to the diameter of the pipe 1;
s3, inserting the driving rod 252 into the hollow cylinder 22;
s4, inserting the hollow cylinder 22 with the driving rod 252 into the pipeline 1;
s5, inserting the pipe 1 with the hollow cylinder 22 installed inside the auxiliary assembly 3, and installing the pulley 2542 on the driving rod 252 at the end of the pipe 1 far from the top 21;
s6, starting a driving motor 2541, driving the driving motor 2541 to drive a driving rod 252 to rotate, and driving the driving rod 252 to drive the pipeline 1 to be inserted into the ground;
s7, taking out the hollow cylinder 22 in the pipeline 1 and the sand in the hollow cylinder 22.
The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present invention.
Claims (5)
1. A push bench device is characterized in that: comprises a conical top head (21) arranged at one end of a pipeline (1), a hollow cylinder (22) matched with the pipeline (1) is arranged in the pipeline (1), a limiting piece used for fixing or separating the hollow cylinder (22) and the pipeline (1) relatively is arranged between the hollow cylinder (22) and the pipeline (1), two ends of the hollow cylinder (22) are flush with two ends of the pipeline (1), one end of the hollow cylinder (22) far away from the top head (21) is provided with a connector (24) with the inner diameter identical to that of the hollow cylinder (22) and the outer diameter smaller than that of the hollow cylinder (22), one end of the hollow cylinder (22) is provided with a thread groove (221) matched with the connector (24), one end of the pipeline (1) far away from the top head (21) is provided with a driving assembly (25) for driving the hollow cylinder (22) and the pipeline (1) to move along the axis direction of the pipeline, the driving assembly (25) comprises a driving block (251) arranged in the hollow cylinder (22) and a driving rod (252) coaxially arranged, the driving block (251) extends into the driving rod (252), a driving groove for the driving block (251) to slide is formed in the driving rod (252), a positioning block (253) for limiting the pipeline (1) is arranged on the outer surface of the pipeline (1), a driving piece (254) for driving the driving rod (252) to rotate is arranged at one end of the driving rod (252), the driving piece (254) comprises a driving motor (2541), the driving motor (2541) drives the driving rod (252) to rotate through a belt (2543) and a belt pulley (2542), the belt pulley (2542) is detachably connected with the driving rod (252), an auxiliary assembly (3) for positioning the pipeline (1) is arranged on the outer side of the pipeline (1), the auxiliary assembly (3) comprises first auxiliary rollers (31) arranged on the left side and the right side of the pipeline (1), the axis of the first auxiliary roller (31) is vertical, first supporting rods (32) are arranged at two ends of the first auxiliary roller (31), the first auxiliary roller (31) is rotatably connected with the first supporting rod (32) and can move on the first supporting rod (32) in a direction of approaching to each other or moving away from each other, the pipeline device further comprises two second auxiliary rollers (34) arranged on the upper side and the lower side of the pipeline (1), the axis of each second auxiliary roller (34) is horizontal, second supporting rods (35) are arranged at two ends of the first auxiliary roller (31), the second auxiliary rollers (34) are rotatably connected with the second supporting rods (35), and the two second auxiliary rollers (34) can move on the second supporting rods (35) in a direction of approaching to each other or moving away from each other.
2. A push bench device as claimed in claim 1, wherein: the limiting part comprises a limiting block (23) arranged inside the pipeline (1), a sliding groove (222) matched with the limiting block (23) is formed in the surface of the hollow cylinder (22) along the axis direction of the hollow cylinder (22), the sliding groove (222) penetrates through two end faces of the hollow cylinder (22), and a fixing groove (223) communicated with the sliding groove (222) is formed in the circumferential direction of the hollow cylinder (22).
3. A push bench device as claimed in claim 1, wherein: the surface of the top head (21) is provided with a sand discharge hole (211) communicated with the inside of the hollow cylinder (22).
4. A push bench device as claimed in claim 1, wherein: the outer surface of the pipeline (1) is provided with a limiting rod, and the extending direction of the limiting rod is the same as the axial direction of the pipeline (1).
5. A pipe jacking construction process of the pipe jacking device as claimed in any one of claims 1 to 4, characterized in that: the method comprises the following steps:
s1, excavating a pipeline groove (4) for placing the pipeline (1) at the construction position;
s2, placing the auxiliary component (3) inside the pipeline groove (4), and adjusting the distance between the two first auxiliary rollers (31) and the distance between the two second auxiliary rollers (34) according to the diameter of the pipeline (1);
s3, inserting the driving rod (252) into the hollow cylinder (22);
s4, inserting the hollow cylinder (22) provided with the driving rod (252) into the pipeline (1);
s5, inserting the pipe (1) provided with the hollow cylinder (22) into the auxiliary assembly (3), and mounting a belt pulley (2542) on the driving rod (252) at one end of the pipe (1) far away from the top head (21);
s6, starting a driving motor (2541), driving the driving motor (2541) to drive a driving rod (252) to rotate, and driving the driving rod (252) to drive the pipeline (1) to be inserted into the ground;
s7, taking out the hollow cylinder (22) in the pipeline (1) and the sand in the hollow cylinder (22).
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| CN202010109636.5A CN111211535B (en) | 2020-02-22 | 2020-02-22 | Pipe jacking device and pipe jacking construction process |
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| CN202010109636.5A CN111211535B (en) | 2020-02-22 | 2020-02-22 | Pipe jacking device and pipe jacking construction process |
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| CN111211535B true CN111211535B (en) | 2021-03-30 |
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