CN214577030U - Complicated environment ultra-long distance pipe jacking structure - Google Patents
Complicated environment ultra-long distance pipe jacking structure Download PDFInfo
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- CN214577030U CN214577030U CN202120038416.8U CN202120038416U CN214577030U CN 214577030 U CN214577030 U CN 214577030U CN 202120038416 U CN202120038416 U CN 202120038416U CN 214577030 U CN214577030 U CN 214577030U
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Abstract
The utility model discloses a complicated environment overlength distance push pipe jacking structure for lay the pipeline under complicated environment overlength distance, the pipeline comprises many tube couplings, push pipe jacking structure includes along the work well of the downward excavation of ground, receives the well setting at the pipeline both ends, the work well setting is at the pipeline middle part, be equipped with middle part roof pressure wall, diagonal bracing in the work well, be equipped with the foil gage on the diagonal bracing, middle part roof pressure wall passes through diagonal bracing to be fixed in the work well, jacking equipment is all installed to middle part roof pressure wall both sides, reserve the entrance to a cave mouth of tube coupling on the work well, two jacking equipment push up balanced pipe-jacking machine of muddy water and tube coupling respectively along the direction of receiving the well and receive the well. According to the scheme, two pipe pushing machines can be operated reversely at the same time, so that the construction speed is improved in a multiplied manner; and because the jacking distance is shortened, the use number of relays is greatly reduced, the construction cost is reduced, the construction steps are simplified, and the method has obvious technical advantages and economic benefits.
Description
Technical Field
The utility model belongs to the technical field of the pipeline construction, especially, relate to a complicated environment overlength distance push pipe jacking structure.
Background
With the continuous and stable growth of economy in China, the urbanization process is further accelerated, and the demand of underground pipelines in China is increased year by year. In addition, the enhancement of people's consciousness on environmental protection, the pipe jacking technology will play an increasingly important role in the construction of underground pipelines in China. Through years of development, the pipe jacking technology has comprehensive functions of economy, high efficiency and environmental protection, and has been applied to a large number of practical projects in China.
The construction types of the pipe jacking are divided into a hand-digging type, an extrusion type, a muddy water balanced type, a three-section two-hinge type hydraulic excavation type and a multi-cutter-disc soil pressure balanced type. The muddy water balanced type pipe jacking is a mechanical automatic pipe jacking construction method which uses the full-section cutting soil body, uses the muddy water pressure to balance the soil pressure and the underground water pressure, and uses muddy water as a medium for conveying abandoned soil. In a complex geological environment, the mud-water balance push bench is safer than an artificial push bench. The traditional mud-water balanced pipe jacking construction method is characterized in that a working well at one side and a receiving well at one side are operated by one pipe jacking machine from one direction to the other direction. However, the method is applied to the construction of jacking the pipe at the extra-long distance and has the following problems: the slow jacking speed is long; and often need to set up a plurality of relays, increase construction cost.
Therefore, in the construction process of the pipeline in the complex environment and the ultra-long distance, the problems of low jacking speed and high construction cost of jacking pipe construction are not solved.
SUMMERY OF THE UTILITY MODEL
Based on this, this application provides complicated environment extra long distance push pipe jacking structure for there are the slow, the high problem of construction cost of jacking speed of push pipe construction among the solution correlation technique, the complicated environment extra long distance push pipe jacking structure simple structure that adopts, construction speed is fast, can effectively improve construction quality, has better economic technology benefit.
The utility model provides a complicated environment overlength distance push pipe jacking structure for lay the pipeline under complicated environment overlength distance, the pipeline comprises many tube couplings, push pipe jacking structure includes along the work well of the downward excavation of ground, receives the well setting at the pipeline both ends, the work well setting is at the pipeline middle part, be equipped with middle part roof pressure wall in the work well, diagonal bracing, be equipped with the foil gage on the diagonal bracing, middle part roof pressure wall passes through diagonal bracing to be fixed in the work well, jacking equipment is all installed to middle part roof pressure wall both sides, reserve the entrance to a cave mouth of tube coupling on the work well, two jacking equipment push up balanced pipe jacking machine of muddy water and tube coupling respectively in the direction of receiving the well and receive the well.
In one possible implementation, displacement sensors are drilled and installed in the working well on both sides along the axis of the pipeline, the displacement sensors being placed at the four corners of the working well.
In one possible implementation, the working well comprises a working well foundation formed by pouring concrete at the bottom and a working well wall formed by extending the working well foundation upwards, and the working well foundation and the working well wall are integrated.
In a possible implementation mode, the cross section of the working well wall is rectangular, the two sides of the working well wall along the axis of the pipeline are long edges, the hole inlets of the pipe joints are arranged on the working well wall of the short edges of the two sides, and the displacement sensors are arranged on the working well wall of the long edges of the two sides and used for monitoring whether the central axis of the working well is displaced to generate deviation.
In one possible implementation mode, the inclined support is fixed between the wall of the working well and the middle jacking wall through bolts, and the strain gauge is installed in the middle of the inclined support and used for eliminating or reducing residual stress and preventing deformation and cracking of the inclined support.
In a possible implementation mode, the bottom of the middle jacking wall is provided with a vertical pile, the vertical pile is arranged along the middle of the working well foundation in a downward driving mode, the vertical pile is used as a center shaft to drive symmetrical inclined piles, and the tops of the working well foundation, the inclined piles and the vertical pile are overlapped and bound with reinforcing steel bars to be reinforced.
In one possible implementation mode, the wall surfaces on two sides of the middle pressing wall are respectively provided with a pair of pressure sensors for monitoring the biasing force of the middle pressing wall in real time.
In a possible implementation mode, supporting columns are installed on the foundation of the working well on two sides of the middle jacking wall through bolts, and the two jacking devices are respectively hung on the supporting columns on two sides of the middle jacking wall.
In a possible implementation mode, when the pipe sections in the working well are constructed, a pipeline foundation is laid on the working well foundation, and the pipe sections are arranged on the pipeline foundation.
In a possible implementation mode, the jacking device comprises a main jacking device, a double-section constant-pressure oil cylinder and a chassis guide rail.
Compared with the prior art, the utility model has the following characteristics and beneficial effect:
1. the utility model arranges a working well in the middle of the pipeline, and arranges a receiving well on both sides of the pipeline respectively, so that two push bench machines can work reversely at the same time, the construction speed is increased by times, and the construction period is about half of that of the traditional method; and because the jacking distance is shortened, the use number of relays is greatly reduced, the construction cost is reduced, the construction steps are simplified, and the method has obvious technical advantages and economic benefits.
2. The utility model discloses shorten push bench top distance at double, it is easy and simple to handle, the operation is reliable, is convenient for master. The device can quickly respond to complex underground conditions by installing the pressure sensor, the displacement sensor and the strain gauge, reduces the possibility of deviation in the jacking process, and improves the jacking construction precision.
Drawings
FIG. 1 is a schematic diagram of a complex environment ultra-long distance pipe jacking system in a traditional method;
FIG. 2 is a schematic view of a complex environment ultra-long distance pipe jacking system of the present invention;
FIG. 3 is a schematic illustration of a work well configuration;
FIG. 4 is a top view of FIG. 3;
FIG. 5 is a schematic view of a middle press wall;
FIG. 6 is a top view of FIG. 5;
FIG. 7 is an installation profile of a pressure sensor, displacement sensor and strain gage;
FIG. 8 is a layout of a mud circulation tank;
FIG. 9 is an installation schematic of the jacking device;
FIG. 10 is a schematic view of the construction operation of the mud balance push bench;
FIG. 11 is a schematic drawing of a jacking construction of a pipe section;
FIG. 12 is a schematic view of a mud balanced push bench in communication with a receiving well;
FIG. 13 is a schematic illustration of a tubing installation within a work well;
FIG. 14 is a schematic illustration of earth backfilling of a work well.
Wherein: 1. a receiving well; 2. a ground surface; 3. a mud-water balance push bench; 4. pipe joints; 5. a relay room; 6. jacking equipment; 7. pressing the wall; 8. a working well; 9. a working well wall; 10. a working well foundation; 11. a support pillar; 12. the middle part is pressed against the wall; 13. oblique piles; 14. erecting piles; 15. a displacement sensor; 16. a slurry circulation tank; 17. obliquely supporting; 18. a strain gauge; 19. a pressure sensor; 20. a pipeline foundation; 21. backfilling earthwork; 22. and (4) a hole inlet.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It will be understood that when an element is referred to as being "mounted on" another element, it can be directly mounted on the other element or intervening elements may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present. When an element is referred to as being "secured to" another element, it can be directly secured to the other element or intervening elements may also be present.
The utility model discloses construction technical requirements such as steel pipe welding and cutting, steel reinforcement cage ligature, concrete pouring among the embodiment are no longer repeated, focus on clarifying the embodiment of this invention, combine the figure and do further detailed explanation to this invention through the embodiment below, this description is not restricted to following embodiment.
The utility model provides a complicated environment overlength distance push pipe jacking structure, refer to fig. 2 ~ 14, be used for laying the pipeline under complicated environment overlength distance, the pipeline comprises many tube couplings 4, push pipe jacking structure includes along the work well 8 of ground 2 excavation downwards, receiving well 1 sets up at the pipeline both ends, work well 8 sets up at the pipeline middle part, be equipped with middle part roof pressure wall 12 in the work well 8, diagonal brace 17, be equipped with foil gage 18 on the diagonal brace 17, middle part roof pressure wall 12 is fixed in work well 8 through diagonal brace 17, jacking equipment 6 is all installed to middle part roof pressure wall 12 both sides, reserve the entrance to a cave of tube coupling 4 on work well 8, two jacking equipment 6 are along receiving well 1's direction two-way with balanced pipe jacking machine 3 of muddy water and tube coupling 4 respectively the top into receiving well 1.
In this embodiment, a working well 8 and two receiving wells 1 are provided, the two receiving wells 1 are respectively provided at the left and right ends of the pipeline, and the jacking devices 6 are installed at the two sides of the middle jacking wall 12 in the working well 8 for simultaneously and reversely operating the mud-water balance jacking pipes and symmetrically jacking the mud-water balance jacking pipes along the two directions of the pipeline respectively.
Fig. 1 is a schematic diagram of a complex environment ultra-long distance pipe jacking system in a conventional method, and referring to fig. 1, a jacking device 6 abuts against one side of a jacking wall 7 to perform one-way jacking work. The difference of this application and traditional method still lies in, traditional roof pressure wall back to the wall of a well, single face atress. This application relies on bottom pile foundation through the middle part, and the bracing piece is fixed, and two-sided atress is more stable.
In this embodiment, the diagonal brace 17 is fixed between the working well wall 9 and the middle pressing wall 12 by bolts, and the strain gauge 18 is installed in the middle of the diagonal brace 17 for eliminating or reducing the residual stress and preventing the diagonal brace 17 from deforming and cracking.
In one embodiment, the working well 8 comprises a working well foundation 10 formed by pouring concrete at the bottom and a working well wall 9 formed by extending the working well foundation 10 upwards, and the working well foundation 10 and the working well wall 9 are integrated.
In this embodiment, the cross section of the working well wall 9 is rectangular, and the two sides along the axis of the pipeline are long sides, wherein the hole inlets 22 of the pipe joints 4 are arranged on the working well wall 9 with the short sides at the two sides, the working well 8 is drilled and provided with the displacement sensors 15 along the two sides of the axis of the pipeline, and the displacement sensors 15 are arranged on the working well wall 9 with the long sides at the two sides and used for monitoring whether the central axis of the working well 8 is displaced to generate deviation.
In one embodiment, a vertical pile 14 is driven at the position of the working well foundation 10, the vertical pile 14 is driven downwards along the middle part of the working well foundation 10, symmetrical inclined piles 13 are driven by taking the vertical pile 14 as a center shaft, the tops of the working well foundation 10, the inclined piles 13 and the vertical piles 14 are overlapped and bound with reinforcing steel bars for reinforcement, and the middle jacking wall 12 is formed by pouring concrete, so that the working well foundation 10, the inclined piles 13, the vertical piles 14 and the middle jacking wall 12 are integrally formed.
In one embodiment, the supporting columns 11 are mounted on the working well foundation 10 on two sides of the middle pressing wall 12 through bolts, and the two jacking devices 6 are respectively hung on the supporting columns 11 on two sides of the middle pressing wall 12. A pair of pressure sensors 19 for monitoring the biasing force of the middle jacking wall 12 in real time are respectively arranged on the wall surfaces on two sides of the middle jacking wall 12, and pressure monitoring work is performed, so that the possibility of deviation in the jacking process is reduced, and the jacking construction precision is improved.
In one embodiment, when the pipe joint 4 in the working well 8 is constructed, the working well foundation 10 is paved with the pipeline foundation 20, and the pipe joint 4 is placed on the pipeline foundation 20.
In the embodiment, the jacking device 6 comprises a main jacking device double-section constant pressure oil cylinder and a chassis guide rail.
In one embodiment, a slurry circulation tank 16 is dug at a proper position close to the working well 8 for installing a slurry separation system and a grouting system, the size of the slurry tank is properly adjusted according to the concrete condition of pipe jacking construction, and whether a mud path circulation and power supply system is normal or not is checked.
In view of the above embodiments, referring to fig. 3 to 14, the present application provides a complex environment ultra-long distance pipe jacking structure, by excavating two receiving wells 1, a jacking device 6 symmetrically jacks a mud-water balanced jacking pipe in two directions, so that the construction speed is increased by times, the construction period is about half of that of the conventional method, and the jacking distance is shortened, so that the pipe joints 4 can be not installed or less installed with the intermediate rooms 5 when being synchronously jacked for construction, thereby not only reducing the construction cost, but also simplifying the construction steps. In particular, the amount of the solvent to be used,
as shown in fig. 3 and 4, the rectangular working well 8 is constructed: in the middle of the pipeline, the ground 2 taking the pipeline as a center shaft is measured and set off to determine an excavation line of a working well 8, U-shaped steel plate piles are arranged along two sides of a pre-constructed working well wall 9 to a designed depth, excavating construction of soil bodies of the working well wall 9 is carried out between the U-shaped steel plate piles by adopting a hydraulic grab grooving machine, fast excavating and grooving are carried out, a reinforcement cage is hoisted and poured to form the working well wall 9 with four closed sides, then the U-shaped steel plate piles are pulled up and recovered, the soil bodies in the working well 8 are excavated to a preset depth, the excavated soil bodies are temporarily stacked in a nearby safe area, finally reinforcing steel bars are bound at the bottom, concrete is poured to enable the working well foundation 10 and the working well wall 9 to form a whole, and an inlet 22 of a pipe joint 4 is symmetrically reserved on the short side working well wall 9.
As shown in fig. 5 and 6, the middle press wall 12 and the diagonal braces 17 are constructed: and (3) driving vertical piles 14 and inclined piles 13, binding reinforcing steel bars at the tops of the working well foundation 10, the inclined piles 13 and the vertical piles 14 in an overlapping manner, pouring concrete to form a middle jacking wall 12, integrating the working well foundation 10, the inclined piles 13, the vertical piles 14 and the middle jacking wall 12, and finally installing inclined supports 17 between two end faces of the middle jacking wall 12 and the working well wall 9 through bolts.
As shown in fig. 7, a pair of pressure sensors 19 are respectively installed on the wall surfaces on both sides of the middle pressing wall 12; drilling holes at four corners close to the working well wall 9 along the pipeline direction, and mounting displacement sensors 15; a strain gauge 18 is installed in the middle of the diagonal support 17.
As shown in fig. 8, the slurry circulation tank 16 is excavated at a position selected near the working well 8 according to the topography of the construction site.
As shown in fig. 9, support columns 11 are installed on the working well foundations 10 on both sides of the middle pressing wall 12 by bolts, and the two pressing devices 6 are respectively lifted to the support columns 11 on both sides of the middle pressing wall 12 for installation and debugging; and simultaneously, starting the construction of the receiving wells 1 at the two ends of the pipeline, and reserving the hole inlets of the pipe joints 4 when the receiving wells 1 are constructed.
As shown in fig. 10, two mud-water balance push bench 3 are synchronously lowered at two sides of the middle pressing wall 12, the reverse jacking operation of the two mud-water balance push bench 3 is synchronously started by using the jacking equipment 6, and the monitoring operation of pressure, displacement and strain is well performed.
As shown in fig. 11, the pipe joints 4 are synchronously lifted and jacked, and the jacking processes on both sides are adjusted according to the monitoring data of pressure, displacement and strain, for example, if the jacking counter force on one side is greater than 10% of the jacking counter force on the other side, the jacking speed on the side with the greater counter force can be properly slowed down or the jacking speed on the side with the smaller counter force can be properly accelerated.
As shown in fig. 12, the pipe joint 4 is repeatedly hoisted and jacked until the mud-water balance pipe jacking machine 3 reaches the receiving well 1.
As shown in fig. 13, the middle jacking wall 12 and the diagonal braces 17 in the working well 8 are removed, the jacking equipment 6 is lifted out, the pipeline foundation 20 is made, the corresponding pipe sections 4 are lifted into the working well 8 to the pipeline foundation 20, and the final connection of the whole super-long distance pipe jacking is completed.
As shown in fig. 14, sealing measures are taken at the hole inlets 22 at two sides of the working well 8, then earth backfilling 21 is carried out on the working well 8, and finally jacking construction of the ultra-long distance jacking pipes in the complex environment is completed. Through the application, not only the construction speed is fast, can also effectively improve construction quality, has better economic technology benefit.
The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present application. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A jacking structure for a complex environment ultra-long distance pipe is characterized in that the jacking structure is used for laying a pipeline under the complex environment ultra-long distance, the pipeline consists of a plurality of pipe sections (4), the push pipe jacking structure comprises a working well (8) excavated downwards along the ground (2), a receiving well (1), the receiving well (1) is arranged at two ends of a pipeline, the working well (8) is arranged at the middle of the pipeline, a middle jacking wall (12) and an inclined support (17) are arranged in the working well (8), a strain gauge (18) is arranged on the inclined support (17), the middle jacking wall (12) is fixed in the working well (8) through the inclined support (17), jacking equipment (6) is installed on two sides of the middle jacking wall (12), an inlet hole of a pipe joint (4) is reserved on the working well (8), and the two jacking equipment (6) respectively jack a muddy water balance push bench (3) and the pipe joint (4) in two directions along the direction of the receiving well (1).
2. The complex environment extra-long distance pipe jacking structure according to claim 1, wherein displacement sensors (15) are drilled and installed at both sides of the working well (8) along the axis of the pipeline, and the displacement sensors (15) are placed at four corners of the working well (8).
3. The complex environment extra-long distance pipe jacking structure according to claim 1, wherein the working well (8) comprises a working well foundation (10) formed by pouring concrete at the bottom and a working well wall (9) formed by extending the working well foundation (10) upwards, and the working well foundation (10) and the working well wall (9) are formed integrally.
4. The complex environment ultra-long distance pipe jacking structure according to claim 3, wherein the cross section of the working well wall (9) is rectangular, the two sides along the axis of the pipeline are long sides, the hole inlet (22) of the pipe joint (4) is arranged on the working well wall (9) on the short sides of the two sides, and the displacement sensor (15) is arranged on the working well wall (9) on the long sides of the two sides and used for monitoring whether the central axis of the working well (8) is displaced to generate deviation.
5. The complex environment ultra-long distance pipe jacking structure according to claim 1, wherein the diagonal brace (17) is fixed between the wall (9) of the working well and the middle jacking wall (12) by bolts, and the strain gauge (18) is installed in the middle of the diagonal brace (17) for eliminating or reducing residual stress and preventing the diagonal brace (17) from deforming and cracking.
6. The complex environment ultra-long distance pipe jacking structure according to claim 1, wherein a vertical pile (14) is arranged at the bottom of the middle jacking wall (12), the vertical pile (14) is driven downwards along the middle of the working well foundation (10), symmetrical inclined piles (13) are driven by taking the vertical pile (14) as a central shaft, and the tops of the working well foundation (10), the inclined piles (13) and the vertical pile (14) are overlapped and bound with reinforcing steel bars for reinforcement.
7. The complex environment extra-long distance pipe jacking structure according to claim 1, wherein a pair of pressure sensors (19) for monitoring the biasing force of the middle jacking wall (12) in real time are respectively installed on the wall surfaces on both sides of the middle jacking wall (12).
8. The complex environment ultra-long distance pipe jacking structure according to claim 3, wherein the supporting columns (11) are installed on the working well foundations (10) on both sides of the middle jacking wall (12) by bolts, and the two jacking devices (6) are respectively hoisted to the supporting columns (11) on both sides of the middle jacking wall (12).
9. The complex environment ultra-long distance pipe jacking structure according to claim 1, wherein when the pipe joints (4) in the working well (8) are constructed, a pipeline foundation (20) is laid on the working well foundation (10), and the pipe joints (4) are placed on the pipeline foundation (20).
10. The complex environment ultra-long distance pipe jacking structure according to claim 1, wherein the jacking equipment (6) comprises a main jacking equipment double-section isobaric oil cylinder and a chassis guide rail.
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| CN202120038416.8U CN214577030U (en) | 2021-01-05 | 2021-01-05 | Complicated environment ultra-long distance pipe jacking structure |
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| CN202120038416.8U CN214577030U (en) | 2021-01-05 | 2021-01-05 | Complicated environment ultra-long distance pipe jacking structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114876491A (en) * | 2022-04-28 | 2022-08-09 | 中国十九冶集团有限公司 | Pipe jacking construction system for large pipe gallery |
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2021
- 2021-01-05 CN CN202120038416.8U patent/CN214577030U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114876491A (en) * | 2022-04-28 | 2022-08-09 | 中国十九冶集团有限公司 | Pipe jacking construction system for large pipe gallery |
| CN114876491B (en) * | 2022-04-28 | 2023-05-09 | 中国十九冶集团有限公司 | Pipe jacking construction system for large pipe gallery |
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