CN112431998A

CN112431998A - Pipeline dislocation repairing method

Info

Publication number: CN112431998A
Application number: CN202011310149.1A
Authority: CN
Inventors: 李松涛; 李巍; 曹翔; 刘恺亮; 朱永超; 赵亮
Original assignee: Zhengzhou Railway Vocational and Technical College
Current assignee: Zhengzhou Railway Vocational and Technical College
Priority date: 2020-11-20
Filing date: 2020-11-20
Publication date: 2021-03-02
Anticipated expiration: 2040-11-20
Also published as: CN112431998B

Abstract

The invention discloses a pipeline dislocation repairing method, which comprises the following steps: the repair device comprises a main support, a hoop top-opening assembly is arranged on the main support, the hoop top-opening assembly is connected with at least two strip-shaped top-pushing plates distributed annularly, the hoop top-opening assembly drives all the top-pushing plates to expand or retract along radial synchronization, then the repair device is placed at the bottom of a pipeline through inspection, the repair device moves to the staggered joint of two pipeline units, the hoop top-opening assembly pushes all the top-pushing plates to expand annularly so as to align the two pipeline units, grouting plugging is carried out at the joint, and finally grouting reinforcement is carried out on the soil body at the reset joint outside the pipeline. The invention has the beneficial effects that: because the work of reseing is carried out the operation in the pipeline, avoided among the prior art carrying out hoist and mount in ground excavation and reseed a great deal of inconvenience that brings, whole process restoration efficiency is high, and is little to the road surface disturbance, reduce cost.

Description

Pipeline dislocation repairing method

Technical Field

The invention belongs to the field of underground pipeline overhauling devices, and particularly relates to a pipeline dislocation repairing method.

Background

Underground spaces are gradually developed and utilized in China, and urban water supply, sewage, rainwater pipelines and the like are buried underground, so that an intricate underground pipe network is formed. Along with the increase of service life, uneven settlement of foundation and other reasons, spliced pipelines are inevitable to have a dislocation phenomenon, so that internal water resources are leaked outwards, and precious water resources in China are wasted; in addition, the seepage force formed by migration of seepage water in the soil foundation can also scour the soil foundation, so that the bearing strength of the soil foundation is weakened, and the phenomenon of void below the pipeline is caused; along with the influence of vehicle load or soil body self-weight above the pipeline, the pipeline can further sink in loose and the vacation department of soil base, and the pipeline dislocation degree is more serious, leads to the unable normal work of city water supply and drainage system, gives people's economy and causes the loss.

At present, the method for repairing the pipeline dislocation mainly comprises the steps of excavating the original earth surface and then lifting the dislocated pipeline by using a lifter, so that the aim of repairing the pipeline is fulfilled. However, the method needs traffic control, the balance condition of the original ground stress can be damaged by excavating the ground surface, the construction period is long, and the quick and continuous repair of the pipeline dislocation cannot be realized. In view of the above, it is desirable to develop a device and method for rapidly and continuously repairing the dislocation of a pipeline by lifting the pipeline from the inside.

Disclosure of Invention

In view of the above, an object of the present invention is to provide a method for repairing a pipeline dislocation.

The technical scheme is as follows:

the method for repairing the dislocation of the pipeline is characterized by comprising the following steps,

step one, arranging a pipeline dislocation repairing device, wherein the repairing device comprises a main support, an annular jacking and expanding component is arranged on the main support, the annular jacking and expanding component is connected with at least two strip-shaped jacking plates, all the jacking plates are circumferentially and uniformly arranged around the main support, the length directions of all the jacking plates are mutually parallel, and the annular jacking and expanding component drives all the jacking plates to synchronously expand or retract outwards along a radial direction;

the annular jacking and expanding assembly comprises radial jacking units, the radial jacking units correspond to the jacking plates one by one, the radial jacking units are connected with the main support and the corresponding jacking plates, and the radial jacking units in the same group are connected with the same driving mechanism;

the main bracket is also provided with a traveling mechanism;

placing the repairing device at the bottom of the pipeline through an inspection well, enabling the repairing device to move inside the pipeline by means of the travelling mechanism and reach the staggered joint of the two pipeline units, and enabling two ends of the top pushing plate to be located on two sides of the staggered joint respectively;

driving the annular jacking component by the driving mechanism to enable the jacking plates to expand outwards and to be gradually attached to the inner walls of the pipeline units until two ends of all the jacking plates are respectively attached to the inner walls of the two pipeline units to finish the alignment of the two pipeline units, and at the moment, a staggered joint forms a reset joint;

grouting and plugging the reset joint;

fifthly, grouting and reinforcing the soil body at the reset joint part outside the pipeline;

and sixthly, the driving mechanism drives the annular jacking component to enable the jacking plate to retract, and then the repairing device is taken out to complete the resetting and repairing operation of the pipeline dislocation.

By adopting the method, the repairing device moves to the staggered two-section pipe joint along the inner cavity of the pipeline, the annular jacking component pushes the jacking plate to expand outwards, the two sections of pipeline units are gradually pushed to align at the joint, and then subsequent reinforcement and repair are carried out.

As a preferred technical scheme, two sets of the annular jacking-expanding assemblies are arranged along the length direction of the jacking plate and are respectively connected with two ends of the strip-shaped main support, radial jacking units of the two sets of the annular jacking-expanding assemblies are respectively opposite to each other one by one, and a pair of the radial jacking units is connected with the same jacking plate;

in the third step, the two driving mechanisms of the two groups of annular jacking assemblies work synchronously.

By adopting the method, the stability of outward expansion movement of the top push plate is improved.

As a preferred technical scheme, the radial top bracing unit comprises an outer bracing push rod and a thrust connecting rod;

the outer supporting push rods of the same group are uniformly distributed around the main support in the circumferential direction, the inner ends of the outer supporting push rods of the same group are hinged with the same end of the main support, and the outer ends of the outer supporting push rods are connected with the corresponding top push plates in a sliding mode;

one end of the thrust connecting rod is hinged with the middle part of the outer support push rod, and the other end of the thrust connecting rod is connected with the driving mechanism;

the driving mechanism comprises a linear pushing mechanism, a fixed part of the linear pushing mechanism is connected with the main support, a movable part of the linear pushing mechanism stretches along the length direction of the main support, and a pushing hinge seat is arranged at the movable part of the linear pushing mechanism and is hinged with all the thrust connecting rods in the same group;

in the third step, the movable parts of the two linear pushing mechanisms synchronously extend out to push the thrust connecting rod, so that the outer end of the external support push rod is expanded outwards, and the pushing plate is expanded outwards.

By adopting the design, the radial jacking unit structure is simple, the linear jacking mechanism jacks along the main support, the space is not occupied, the construction is convenient, the layout is reasonable, and the reliability is high.

According to the preferable technical scheme, an external support sliding block guide rod is fixedly arranged on the inner side of the jacking plate along the length direction of the jacking plate, two external support guide sliding blocks are slidably sleeved on the external support sliding block guide rod, and the two external support guide sliding blocks are respectively hinged with the outer ends of external support push rods of a corresponding pair of radial jacking units.

By adopting the method, the angle change between the outer support push rod and the pushing plate is well adapted, and the connection stability between the outer support push rod and the pushing plate is improved.

As a preferred technical scheme, the main support comprises two hinged supports which are arranged oppositely, the two hinged supports are connected through at least two connecting rods which are arranged in parallel, the connecting rods are parallel to the length direction of the top pushing plate, and the middle parts of all the connecting rods are connected with the same seat plate;

each hinged support is hinged with the inner end of the outer support push rod in the same group;

the straight-line pushing mechanism is fixedly arranged on the seat plate and is arranged between the connecting rods, and the movable part of the straight-line pushing mechanism faces to the corresponding hinged support.

By adopting the design, the cavity in the main support and the gap between the connecting rods can accommodate the linear pushing mechanism, the outer support push rod and the thrust connecting rod, and the structure is compact.

As an optimal technical scheme, each pushing hinged seat is connected with at least two guide retainers respectively, and the guide retainers connected to the same pushing hinged seat correspond to the connecting rods one to one and are in sliding fit with the connecting rods respectively.

By adopting the design, the pushing stability of the movable part of the linear pushing mechanism is improved, so that the outward expansion stability of the pushing plate is improved.

As a preferred technical scheme, the specific process of the step four is to uniformly arrange permeable high polymer grouting holes at the restoration joints, and then inject permeable high polymer grout to fill the restoration joints.

And as a preferred technical scheme, the concrete process of the fifth step is that foaming type high polymer grout is injected into the lower parts of two sides of the reset joint outside the pipeline through high polymer guide pipes, observation is carried out inside the pipeline through the CCTV of the pipeline, when grout enters the pipeline through the aligned reset joint part, grouting is stopped, and soil body reinforcement is finished.

Compared with the prior art, the invention has the beneficial effects that: the repairing device moves to the staggered two sections of pipe joints along the inner cavity of the pipeline, pushes the two sections of pipeline units to be aligned at the joints, and then carries out subsequent reinforcement and repair.

Drawings

FIG. 1 is a schematic structural view of the prosthetic device with the top blade retracted to near the main support;

FIG. 2 is a schematic view of the structure of FIG. 1 from another perspective;

FIG. 3 is a schematic view of the top blade of FIG. 1 being flared away from the main support;

FIG. 4 is a schematic view of FIG. 3 from a second perspective;

FIG. 5 is a schematic view from a third perspective of FIG. 3;

FIG. 6 is a schematic view of the prosthetic device moved to a pipeline dislocation joint with unidirectional dislocation;

FIG. 7 is a schematic view of another perspective of FIG. 6;

FIG. 8 is a schematic view of the prosthetic device moved to a bi-directionally misaligned pipe misalignment joint;

fig. 9 is a schematic view of the prosthetic device and the pipeline after completion of the restoration docking.

Detailed Description

The present invention will be further described with reference to the following examples and the accompanying drawings.

Example one

As shown in fig. 1 to 5, a pipeline dislocation repair device comprises a main support 1, wherein a hoop pushing and expanding assembly is arranged on the main support 1, the hoop pushing and expanding assembly is connected with at least two strip-shaped pushing plates 4, all the pushing plates 4 are uniformly arranged around the main support 1 in a hoop direction, the length directions of all the pushing plates 4 are parallel to each other, and the hoop pushing and expanding assembly drives all the pushing plates 4 to synchronously expand or retract along a radial direction. The main support 1 is also provided with a travelling mechanism 5.

As shown in fig. 1 and 3, the circumferential propping assembly comprises radial propping units 3, the radial propping units 3 correspond to the propping plates 4 one by one, and the radial propping units 3 are connected with the main support 1 and the corresponding propping plates 4. The radial top bracing units 3 of the same group are connected with the same driving mechanism 2.

Specifically, as shown in fig. 2 and 4, the main support 1 includes two hinge supports 11 disposed opposite to each other, the two hinge supports 11 are connected by at least two connecting rods 12 disposed in parallel, the connecting rods 12 are parallel to the length direction of the top push plate 4, and the same seat plate 13 is connected between the middle portions of all the connecting rods 12.

And two groups of annular jacking and expanding assemblies are arranged on the main support 1. And the two groups of annular jacking and expanding assemblies are arranged along the length direction of the jacking plate 4 and are respectively close to the two ends of the main support 1. Radial shoring units 3 of the two sets of annular shoring assemblies are respectively and oppositely arranged one by one, and a pair of radial shoring units 3 are connected with the same one of the jacking plates 4.

The radial top bracing unit 3 comprises an outer bracing push rod 31 and a thrust connecting rod 32. The same group of the external supporting push rods 31 are uniformly distributed around the main support 1 in the circumferential direction, the inner ends of the external supporting push rods 31 in the same group are hinged with the same hinged support 11, and the outer ends of the external supporting push rods 31 are connected with the corresponding pushing plates 4 in a sliding mode. When pushing the outer supporting push rod 31, the pushing link 32 can rotate within the range of 0-90 degrees of the included angle with the connecting rod 12.

As shown in fig. 4, the connection mode of the external-supporting push rod 31 and the top push plate 4 is as follows: the inboard of top push plate 4 is provided with outer support slider guide arm 34 along its length direction is fixed, the sliding sleeve is equipped with two outer support direction sliders 33 on outer support slider guide arm 34, two outer support direction slider 33 respectively with corresponding a pair of radial top props unit 3's outer end and articulates the push rod 31 outer end that props outward. In order to ensure that the outer support guide sliding blocks 33 stably slide when the pushing plate 4 pushes outwards, two outer support sliding block guide rods 34 are arranged on the inner side of the same pushing plate 4, the two outer support sliding block guide rods 34 are parallel to each other, and two ends of each outer support sliding block guide rod 34 are respectively connected with the pushing plate 4 through a mounting seat. The outer support guide sliding block 33 is simultaneously sleeved on the two outer support sliding block guide rods 34 in a sliding manner.

One end of the thrust connecting rod 32 is hinged with the middle part of the outer support push rod 31, and the other end is connected with the driving mechanism 2. The driving mechanism 2 comprises a linear pushing mechanism 21 positioned between the connecting rods 12, the fixed part of the linear pushing mechanism 21 is connected with the seat plate 13, the movable part of the linear pushing mechanism 21 extends and retracts along the length direction of the main support 1, the movable part of the linear pushing mechanism 21 faces the corresponding hinged support 11, the movable part of the linear pushing mechanism 21 is provided with a pushing hinged seat 22, and the pushing hinged seat 22 is hinged with all the thrust connecting rods 32 in the same group. The linear pushing mechanism 21 may be a hydraulic cylinder, and a pushing hinge seat 22 is fixedly arranged at the front end of a piston rod thereof.

The cross section of the outer support push rod 31 is groove-shaped, the opening of the outer support push rod faces to the corresponding thrust connecting rod 32, and the thrust connecting rod 32 can be accommodated in the inner cavity of the outer support push rod 31. Like this, outer push rod 31 that props can be retrieved to being close to main support 1 for top push plate 4 is pressed close to main support 1 when retracting the state, reduces the horizontal size of device, and trafficability characteristic is better in the pipeline.

In order to improve the pushing stability of the movable part of the linear pushing mechanism 21, each pushing hinged seat 22 is connected with at least two guiding retainers 23, and the guiding retainers 23 connected to the same pushing hinged seat 22 correspond to the connecting rods 12 one by one and are in sliding fit with the connecting rods 12 respectively.

In this embodiment, the hinged supports 11 are square, and four corners of each of the hinged supports 11 are respectively provided with one of the connecting rods 12. One the hoop propping component is provided with four radial propping units 3, the four radial propping units 3 are distributed in four gaps between the connecting rods 12, and the inner ends of the external propping push rods 31 are respectively hinged with the middle parts of the four frame strips of the hinged support 11. Like this, when four ejector plate 4 expand outward, can multi-angle contact pipeline inner wall and play the top and push away the effect, pressure was too big when preventing monolithic ejector plate 4 and pipeline contact, but less ejector plate 4 has been can satisfy the pipeline accuracy requirement that the butt joint resets.

The walking mechanism 5 comprises four movable supporting legs 51 and rollers 52, the four movable supporting legs 51 are connected to the lower side of the main support 1, and the rollers 52 are respectively arranged at the lower end of each movable supporting leg 51. In order to facilitate the movement of the device, two rollers 52 at the same end of the main stand 1 are provided with wheel hub motors as walking driving mechanisms.

For adapting to the inner cavity of the pipeline, the push plate 4 is an arc-shaped plate with a circular arc-shaped cross section so as to better fit the inner wall of the pipeline and reduce the stress concentration. The top push plate 4 can be made of a high-strength steel plate with the thickness of 3 cm.

The device is used for aligning the dislocated pipeline, and the using method of the device is shown in the second embodiment.

Example two

A pipeline dislocation repairing method is carried out by adopting the repairing device of the first embodiment, and comprises the following steps:

step one, the repairing device is placed at the bottom of a pipeline through an inspection well, and moves inside the pipeline by means of the roller 52 to reach the position of a staggered joint b of two pipeline units a, and at the moment, two ends of the push plate 4 are respectively positioned at two sides of the staggered joint b, as shown in fig. 6, 7 or 8.

And step two, the two hydraulic oil cylinders work synchronously to respectively push the corresponding thrust connecting rods 32, the thrust connecting rods 32 push the outer supporting push rods 31 so that the pushing plates 4 are expanded and gradually attached to the inner walls of the pipeline units a until the two ends of the pushing plates 4 are respectively attached to the inner walls of the two pipeline units a to finish the alignment of the two pipeline units a, and at the moment, the staggered joint b forms a reset joint b' as shown in fig. 9.

And thirdly, grouting and plugging the position of the reset joint b'. Specifically, penetrating type high polymer grouting holes are uniformly distributed at the reset joint b ', and then penetrating type high polymer grout is injected to fill the reset joint b'.

And fourthly, grouting and reinforcing the soil body at the position of the reset joint b' outside the pipeline. And injecting foaming type high polymer grout into the lower parts of the two sides of the reset joint b 'outside the pipeline through a high polymer guide pipe, observing the inside of the pipeline through the CCTV of the pipeline, stopping grouting when grout enters the inside of the pipeline through the aligned reset joint b', and finishing soil body reinforcement.

When the pipeline to be repaired has a plurality of staggered joints b, after one staggered joint b is finished, the repairing device moves to the next staggered joint b along the inner cavity of the pipeline, and then the steps two to five are repeated to finish the restoration and the repair one by one until the repair of the whole pipeline is finished.

And step five, the driving mechanism 2 drives the annular jacking component to enable the jacking plate 4 to retract, and then the repairing device is taken out to complete the resetting and repairing operation of the pipeline dislocation.

The polymer slurry injected during the consolidation may be a polyurethane-based polymer slurry.

In the whole operation process, the main bracket 1 and the top push plate 4 are always kept in a horizontal state. Through practical application inspection, the device and the method for repairing the pipeline dislocation can realize rapid and continuous lifting of the pipeline dislocation; the gaps after the pipeline is lifted are filled with a permeable high polymer grouting material, so that the gaps can be quickly plugged; in addition, the foamed high polymer grouting material injected below the lifting pipeline can realize the reinforcement effect on the soil foundation below the pipeline. The repairing device and the repairing method disclosed by the invention can realize quick and continuous resetting and repairing operation of underground pipeline dislocation, and avoid the problems of long construction period, large environmental disturbance, uneconomic performance and the like of the traditional excavation and maintenance mode.

Finally, it should be noted that the above-mentioned description is only a preferred embodiment of the present invention, and those skilled in the art can make various similar representations without departing from the spirit and scope of the present invention.

Claims

1. A pipeline dislocation repairing method is characterized by comprising the following steps:

step one, a pipeline dislocation repairing device is arranged, the repairing device comprises a main support (1), an annular jacking and expanding assembly is arranged on the main support (1), the annular jacking and expanding assembly is connected with at least two strip-shaped jacking plates (4), all the jacking plates (4) are circumferentially and uniformly arranged around the main support (1), the length directions of all the jacking plates (4) are mutually parallel, and the annular jacking and expanding assembly drives all the jacking plates (4) to radially and synchronously expand or retract outwards;

the annular jacking and expanding assembly comprises radial jacking units (3), the radial jacking units (3) correspond to the jacking plates (4) one by one, the radial jacking units (3) are connected with the main support (1) and the corresponding jacking plates (4), and the radial jacking units (3) in the same group are connected with the same driving mechanism (2);

the main bracket (1) is also provided with a traveling mechanism (5);

placing the repairing device at the bottom of the pipeline through an inspection well, enabling the repairing device to move inside the pipeline by means of the travelling mechanism (5) and reach the staggered joint (b) of the two pipeline units (a), and enabling two ends of the top pushing plate (4) to be located on two sides of the staggered joint (b) respectively;

driving the annular jacking component by the driving mechanism (2) to enable the jacking plates (4) to expand outwards and to be gradually attached to the inner walls of the pipeline units (a) until two ends of all the jacking plates (4) are respectively attached to the inner walls of the two pipeline units (a), so that the two pipeline units (a) are aligned, and at the moment, the staggered joint (b) forms a reset joint (b');

fourthly, grouting and plugging are carried out at the position of the reset joint (b');

fifthly, grouting and reinforcing the soil body at the position of the reset joint (b') outside the pipeline;

and step six, the driving mechanism (2) drives the annular jacking component to enable the jacking plate (4) to retract, and then the repairing device is taken out to complete the resetting and repairing operation of the pipeline dislocation.

2. The pipeline malposition repairing method according to claim 1, wherein: the two groups of the circumferential jacking and expanding assemblies are arranged along the length direction of the jacking plates (4) and are respectively connected with two ends of the strip-shaped main support (1), the radial jacking units (3) of the two groups of the circumferential jacking and expanding assemblies are respectively opposite to each other one by one, and a pair of the radial jacking units (3) is connected with the same jacking plate (4);

in the third step, the two driving mechanisms (2) of the two groups of annular jacking assemblies work synchronously.

3. The pipeline malposition repairing method according to claim 1, wherein: the radial top bracing unit (3) comprises an outer bracing push rod (31) and a thrust connecting rod (32);

the outer supporting push rods (31) in the same group are circumferentially and uniformly distributed around the main support (1), the inner ends of the outer supporting push rods (31) in the same group are hinged with the same end of the main support (1), and the outer ends of the outer supporting push rods (31) are in sliding connection with the corresponding top push plates (4);

one end of the thrust connecting rod (32) is hinged with the middle part of the outer support push rod (31), and the other end of the thrust connecting rod is connected with the driving mechanism (2);

the driving mechanism (2) comprises a linear pushing mechanism (21), the fixed part of the linear pushing mechanism (21) is connected with the main support (1), the movable part of the linear pushing mechanism (21) extends along the length direction of the main support (1), the movable part of the linear pushing mechanism (21) is provided with a pushing hinged seat (22), and the pushing hinged seat (22) is hinged with all the thrust connecting rods (32) in the same group;

in the third step, the movable parts of the two linear thrusting mechanisms (21) synchronously extend out to push the thrust connecting rod (32) so as to expand the outer end of the outer supporting push rod (31) outwards, so that the pushing plate (4) expands outwards.

4. The pipeline malposition repairing method according to claim 3, wherein: the inboard of push pedal (4) is provided with outward along its length direction is fixed and props slider guide arm (34), it is equipped with two outward to prop guide slider (33), two to prop sliding sleeve on slider guide arm (34) outward prop guide slider (33) respectively with corresponding a pair of radially propping outer push rod (31) outer end of propping unit (3) and hinge.

5. The pipeline malposition repairing method according to claim 3, wherein: the main support (1) comprises two hinged supports (11) which are arranged oppositely, the two hinged supports (11) are connected through at least two connecting rods (12) which are arranged in parallel, the connecting rods (12) are parallel to the length direction of the top push plate (4), and the middle parts of all the connecting rods (12) are connected with the same seat plate (13);

each hinged support (11) is hinged with the inner end of the outer support push rod (31) of the same group;

the straight-line pushing mechanism (21) is fixedly arranged on the seat plate (13) and is arranged between the connecting rods (12), and the movable part of the straight-line pushing mechanism (21) faces to the corresponding hinged support (11).

6. The pipeline malposition repairing method according to claim 5, wherein: each pushing hinged seat (22) is connected with at least two guide retainers (23) respectively, and the guide retainers (23) connected to the same pushing hinged seat (22) correspond to the connecting rods (12) one by one and are in sliding fit with the connecting rods respectively.

7. The pipeline malposition repairing method according to claim 1, wherein: the concrete process of the fourth step is that permeable high polymer grouting holes are uniformly distributed at the reset joint (b '), and then permeable high polymer grout is injected to fill the reset joint (b').

8. The pipeline malposition repairing method according to claim 1, wherein: and the concrete process of the fifth step is that foaming type high polymer grout is injected into the lower parts of the two sides of the reset joint (b ') outside the pipeline through a high polymer guide pipe, observation is carried out inside the pipeline through the CCTV of the pipeline, when grout enters the inside of the pipeline through the aligned reset joint (b'), grouting is stopped, and soil body reinforcement is finished.