CN214366088U - Pipeline protection system for subway station access and exit construction - Google Patents
Pipeline protection system for subway station access and exit construction Download PDFInfo
- Publication number
- CN214366088U CN214366088U CN202023098355.9U CN202023098355U CN214366088U CN 214366088 U CN214366088 U CN 214366088U CN 202023098355 U CN202023098355 U CN 202023098355U CN 214366088 U CN214366088 U CN 214366088U
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- Prior art keywords
- pipeline
- tunnel
- protection system
- foundation pit
- subway station
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- 238000010276 construction Methods 0.000 title claims abstract description 26
- 230000000903 blocking effect Effects 0.000 claims description 20
- 230000003014 reinforcing effect Effects 0.000 claims description 16
- 229910000831 Steel Inorganic materials 0.000 claims description 15
- 239000010959 steel Substances 0.000 claims description 15
- 230000004888 barrier function Effects 0.000 claims description 8
- 230000002787 reinforcement Effects 0.000 claims 2
- 238000009412 basement excavation Methods 0.000 abstract description 27
- 238000000926 separation method Methods 0.000 abstract description 17
- 230000006378 damage Effects 0.000 abstract description 10
- 230000000694 effects Effects 0.000 abstract description 8
- 230000009977 dual effect Effects 0.000 abstract description 5
- 238000000034 method Methods 0.000 abstract description 4
- 239000011435 rock Substances 0.000 abstract description 3
- 239000002689 soil Substances 0.000 description 14
- 101150054854 POU1F1 gene Proteins 0.000 description 9
- 238000007569 slipcasting Methods 0.000 description 6
- 230000001066 destructive effect Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007717 exclusion Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
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Abstract
The utility model discloses a pipeline protection system for subway station access and exit construction, which comprises a foundation pit, a tunnel, an underground pipeline and a plurality of separation piles, wherein the foundation pit and the underground pipeline are separated by the separation piles, and all the separation piles are distributed at intervals along the length direction of the underground pipeline; the earth's surface in tunnel is equipped with the ground back up coat, the top in tunnel is equipped with the tunnel back up coat. The pipeline protection system of the utility model has good effect on pipeline protection under the double destruction effect generated by foundation pit excavation and tunnel excavation, wherein, the separation pile can provide a stable area for subsequent tunnel excavation while protecting the pipeline from the foundation pit excavation; separation stake, ground back up coat and tunnel back up coat can agree with mutually with the subway work progress, realize the dynamic protection of construction overall process, play the dual function of protection pipeline and stable country rock.
Description
Technical Field
The utility model relates to an underground piping protects the field, in particular to pipeline protection system of subway station access & exit construction.
Background
The engineering problem faced by subway construction is more and more complex, and the problem of underground pipeline protection is a difficult problem. Urban underground pipelines are dense, and the difficulty of pipeline protection is higher due to double destruction effects brought by foundation pit excavation and tunnel excavation successively. In urban central areas and main traffic roads, pipelines are difficult to change, and once the pipelines are damaged due to subway construction, the loss and the influence caused by the damage are very serious. Due to the limitation of the current detection technology level, the detection of the reinforced concrete pipeline cannot be very accurate, so that some existing protective measures are not used. The existing pipeline protection measures do not relate to pipeline protection under the double destructive effect of foundation pit excavation and tunnel excavation, and have a plurality of defects in the aspects of practicability, operability and economical efficiency.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a pipeline protection system of subway station access & exit construction to overcome the shortcoming of the pipeline protection difficulty under the dual destruction effect of current foundation ditch excavation and tunnel excavation.
In order to achieve the purpose, the utility model provides a pipeline protection system for the construction of an entrance and an exit of a subway station, which comprises a foundation pit, a tunnel, an underground pipeline and a plurality of separation piles, wherein the foundation pit and the underground pipeline are separated by the separation piles, and all the separation piles are distributed at intervals along the length direction of the underground pipeline; the earth's surface in tunnel is equipped with the ground back up coat, the top in tunnel is equipped with the tunnel back up coat.
Preferably, in the above technical solution, the ground reinforcing layer is formed by grouting a sleeve valve pipe.
Preferably, in the above technical solution, the tunnel reinforcing layer is a reinforcing layer formed by combining pipe shed grouting, advanced small duct grouting, and WSS shrinkage-free retreating type deep hole grouting.
Preferably, in the above technical scheme, foundation pit fender piles are arranged around the foundation pit.
Preferably, in the above technical scheme, the blocking pile is constructed by using a three-shaft stirrer.
Preferably, among the above-mentioned technical scheme, still include a plurality of shaped steel, shaped steel with the setting of separation stake one-to-one, just shaped steel with can dismantle the mode install in the separation stake.
Preferably, in the above technical solution, the bottom of each barrier pile is not lower than the bottom of the underground pipeline adjacent to the barrier pile.
Compared with the prior art, the utility model discloses following beneficial effect has:
1. the pipeline protection system of the utility model has good effect on pipeline protection under the double destructive effect generated by foundation pit excavation and tunnel excavation, and can play a good role in protecting underground pipelines when the underground pipelines can not be accurately positioned; the blocking pile can provide a stable area for subsequent tunnel excavation while protecting the pipeline from being influenced by the foundation pit excavation, so that the transverse damage effect of the foundation pit excavation on the underground pipeline is blocked, the surrounding soil body is reinforced, and the soil body can be prevented from moving to the foundation pit to the maximum extent; separation stake, ground back up coat and tunnel back up coat agree with mutually with the subway work progress, realize the dynamic protection of construction overall process, play the dual function of protective line way and stable country rock, collect practicality, maneuverability and economic nature in an organic whole, provide a feasible technical scheme for the solution of subway construction underground line protection problem.
2. The utility model discloses a ground back coat is the back coat that is formed by sleeve valve pipe slip casting, and the tunnel back coat is the back coat that is formed by pipe shed slip casting, leading little pipe slip casting and WSS do not have the shrink formula deep hole slip casting combination to constitute complete pipeline protection system, avoid under dual destruction effect, underground pipeline suffers destruction, guarantees foundation ditch excavation and tunnel excavation's safety.
Drawings
Fig. 1 is according to the utility model discloses a pipeline protection system's of subway station access & exit construction structural schematic diagram.
Fig. 2 is a schematic top view of fig. 1 according to the present invention.
FIG. 3 is a schematic structural view of the section steel according to the present invention.
Fig. 4 is a schematic structural diagram of sleeve valve tube grouting according to the present invention.
Description of the main reference numerals:
the method comprises the following steps of 1-foundation pit, 2-WSS shrinkage-free retreating type deep hole, 3-ground reinforcing layer, 4-blocking pile, 5-advanced small conduit, 6-underground pipeline, 7-tunnel reinforcing layer, 8-pipe shed, 9-tunnel, 10-foundation pit fender pile, 11-section steel and 12-sleeve valve pipe.
Detailed Description
The following detailed description of the present invention is provided in conjunction with the accompanying drawings, but it should be understood that the scope of the present invention is not limited by the following detailed description.
Throughout the specification and claims, unless explicitly stated otherwise, the word "comprise", or variations such as "comprises" or "comprising", will be understood to imply the inclusion of a stated element or component but not the exclusion of any other element or component.
Fig. 1 to 4 are schematic structural views showing a pipeline protection system for subway station entrance/exit construction according to a preferred embodiment of the present invention, which includes a foundation pit 1, a tunnel 9, an underground pipeline 6 and a plurality of blocking piles 4. Referring to fig. 1 to 4, a foundation pit 1 and an underground pipeline 6 are separated by a plurality of blocking piles 4, and all the blocking piles 4 are distributed at intervals along the length direction of the underground pipeline 6, so that the blocking piles 4 can protect the pipeline from the excavation of the foundation pit 1 and provide a stable area for the subsequent excavation of a tunnel 9; the blocking piles 4 play a role in blocking the transverse damage effect of the excavation of the foundation pit 1 to the underground pipeline 6, not only can the surrounding soil bodies be reinforced, but also the soil bodies can be prevented from moving to the foundation pit 1 to the maximum extent. The earth's surface in tunnel 9 is equipped with ground back up coat 3, and the top in tunnel 9 is equipped with tunnel back up coat 7 to make separation stake 4, ground back up coat 3 and tunnel back up coat 7 agree with mutually with the subway work progress, realize the dynamic protection of construction overall process, play the dual function of protection pipeline and stable country rock, thereby make pipeline protection system collect practicality, maneuverability and economic nature in an organic whole, provide a feasible technical scheme for the solution of subway construction underground pipeline 6 protection problem.
Referring to fig. 1 and 4, the ground reinforcing layer 3 is preferably a reinforcing layer formed by grouting sleeve valve pipes 12, and the grouting sleeve valve pipes 12 are used for grouting and reinforcing soil bodies in the construction range of the underground pipeline 6 and the tunnel 9, so as to intensively reinforce soil bodies on two sides and the lower part of the underground pipeline 6 and soil bodies in a certain range on the upper part and two sides of the section of the tunnel 9.
Referring to fig. 1, preferably, the tunnel reinforcing layer 7 is a reinforcing layer formed by combining grouting of a pipe shed 8, grouting of a leading small pipe 5 and grouting of a WSS non-shrinkage retreat type deep hole 2, wherein the grouting of the pipe shed 8, the grouting of the leading small pipe 5 and the grouting of the WSS non-shrinkage retreat type deep hole 2 are arranged to avoid the underground pipeline 6 so as to be combined with the sleeve valve pipe 12 into a whole, and grouting and reinforcing of soil bodies on the left and right sides and the lower part of the underground pipeline 6 are jointly performed, so that the soil body is more stable, after the tunnel 9 is excavated, deformation of the soil body in a reinforcing area is reduced, and the influence of the excavation of the tunnel 9 on the underground pipeline 6 is effectively reduced.
Referring to fig. 1 and 2, it is preferable that the perimeter of the foundation pit 1 is provided with foundation pit fender posts 10 to improve the strength of the foundation pit 1 and prevent the foundation pit 1 from collapsing.
Referring to fig. 1 and 2, preferably, the blocking piles 4 are constructed by using a three-axis mixer, are simple and convenient to construct, and can play a role in reinforcing soil mass on the upper portion of the excavation section of the tunnel 9.
Referring to fig. 3, preferably, the pipeline protection system further includes a plurality of section steels 11, the section steels 11 are arranged in one-to-one correspondence with the blocking piles 4, and the section steels 11 are detachably installed in the blocking piles 4. When adopting triaxial mixer construction separation stake 4, insert shaped steel 11 in the separation stake 4 that forms earlier stage, the bulk rigidity of reinforcing separation stake 4 waits that separation stake 4 later stage formation intensity can be extracted to toward the downthehole slip casting that forms behind the shaped steel 4 of extracting. Wherein, the section steel 11 is I-shaped steel and can be repeatedly used.
Referring to figure 1, preferably the bottom of each barrier pile 4 is not lower than the bottom of the underground pipeline 6 adjacent to it, i.e. the bottom of the barrier pile 4 is not lower than the bottom of the underground pipeline 6 closest to it, and is also kept close to the bottom of the underground pipeline 6 closest to it, which is preferably 20-30 cm for the convenience of the barrier pile 4 construction operation. The bottom of the blocking pile 4 is not lower than the bottom of the underground pipeline 6 closest to the blocking pile 4, so that the construction of the blocking pile 4 cannot damage the adjacent underground pipeline 6, and the close distance can be kept to furthest ensure that large-scale soil bodies on the upper part and two sides of the underground pipeline 6 are not influenced by excavation of the foundation pit 1. The underground pipeline 6 closest to the barrier pile 4 is well protected and the underground pipeline 6 at a distance from the barrier pile 4 will naturally also be in a stable state.
Adopt the utility model discloses a pipeline protection system adopts the multiple slip casting back up coat of separation stake 4 and the soil body, can improve the stability of the peripheral and bottom soil body of pipeline 6, reduces pipeline 6 and receives the influence of foundation ditch 1 excavation and tunnel 9 excavation, avoids pipeline 6 to suffer destruction, guarantees the safety of foundation ditch 1 excavation and tunnel 9 excavation.
The foregoing descriptions of specific exemplary embodiments of the present invention have been presented for purposes of illustration and description. It is not intended to limit the invention to the precise form disclosed, and obviously many modifications and variations are possible in light of the above teaching. The exemplary embodiments were chosen and described in order to explain certain principles of the invention and its practical application to enable one skilled in the art to make and use various exemplary embodiments of the invention and various alternatives and modifications as are suited to the particular use contemplated. It is intended that the scope of the invention be defined by the claims and their equivalents.
Claims (7)
1. A pipeline protection system for subway station access and exit construction is characterized by comprising a foundation pit, a tunnel, an underground pipeline and a plurality of blocking piles, wherein the foundation pit and the underground pipeline are separated by the blocking piles, and all the blocking piles are distributed at intervals along the length direction of the underground pipeline; the earth's surface in tunnel is equipped with the ground back up coat, the top in tunnel is equipped with the tunnel back up coat.
2. The pipeline protection system for subway station entrance and exit construction as claimed in claim 1, wherein said ground reinforcing layer is a reinforcing layer formed by sleeve valve pipe grouting.
3. The pipeline protection system for subway station entrance and exit construction as claimed in claim 1, wherein said tunnel reinforcement layer is a reinforcement layer formed by the combination of pipe shed grouting, advanced small pipe grouting and WSS shrinkage-free retreating type deep hole grouting.
4. The pipeline protection system for subway station entrance and exit construction as claimed in claim 1, wherein said foundation pit is provided with foundation pit fender piles around the periphery thereof.
5. The pipeline protection system for subway station entrance and exit construction as claimed in claim 1, wherein said blocking pile is constructed by using a three-axis stirrer.
6. The pipeline protection system for subway station access & exit construction as claimed in claim 1, further comprising a plurality of section steels, said section steels being disposed in one-to-one correspondence with said blocking piles, and said section steels being detachably mounted in said blocking piles.
7. The pipeline protection system for subway station entrance and exit construction as claimed in claim 1, wherein the bottom of each barrier pile is not lower than the bottom of the underground pipeline adjacent to it.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023098355.9U CN214366088U (en) | 2020-12-21 | 2020-12-21 | Pipeline protection system for subway station access and exit construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023098355.9U CN214366088U (en) | 2020-12-21 | 2020-12-21 | Pipeline protection system for subway station access and exit construction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214366088U true CN214366088U (en) | 2021-10-08 |
Family
ID=77986476
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023098355.9U Expired - Fee Related CN214366088U (en) | 2020-12-21 | 2020-12-21 | Pipeline protection system for subway station access and exit construction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214366088U (en) |
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2020
- 2020-12-21 CN CN202023098355.9U patent/CN214366088U/en not_active Expired - Fee Related
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|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20211008 |