CN220748293U - Double-layer waterproof system for underground excavation tunnel of poor water-rich stratum - Google Patents
Double-layer waterproof system for underground excavation tunnel of poor water-rich stratum Download PDFInfo
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- CN220748293U CN220748293U CN202322357762.4U CN202322357762U CN220748293U CN 220748293 U CN220748293 U CN 220748293U CN 202322357762 U CN202322357762 U CN 202322357762U CN 220748293 U CN220748293 U CN 220748293U
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- water
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- permeable
- waterproof system
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 64
- 238000009412 basement excavation Methods 0.000 title description 5
- 230000000149 penetrating effect Effects 0.000 claims abstract description 5
- 230000015572 biosynthetic process Effects 0.000 claims 1
- 238000004078 waterproofing Methods 0.000 claims 1
- 239000010410 layer Substances 0.000 description 30
- 238000010276 construction Methods 0.000 description 6
- 239000002689 soil Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007123 defense Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Abstract
The utility model relates to the technical field of underground tunnel, in particular to a double-layer waterproof system of an underground tunnel with a poor water-rich stratum, which is provided with two layers of quick-setting permeable concrete layers, wherein the quick-setting permeable concrete layers comprise an inner layer and an outer layer, and a plastic water stop plate is arranged between the inner layer and the outer layer; the center of the tunnel bottom plate is provided with a water permeable ditch penetrating through the bottom plate, and a water permeable pile is arranged at the bottom of the tunnel towards the water permeable ditch; longitudinal U-shaped water collecting grooves are reserved at arch feet on two sides of the tunnel. Solves the problem of water leakage of the underground structure of the stratum with poor water enrichment.
Description
Technical Field
The utility model relates to the technical field of underground tunnel construction, in particular to a waterproof system of an underground tunnel structure of a water-rich poor geological area.
Background
With the development of cities, the development forms and scales of underground spaces are more diversified, and the construction forms of underground tunnels, underground civil air defense, underground roads and the like are more and more. The common problem of underground engineering is leakage, and the influence of underground water on underground space engineering is long-term, and not only affects the structural safety, but also affects the use function of the underground space engineering. The problem of how to effectively solve the water leakage of the underground structure is a great difficulty in underground engineering and tunnel construction, especially in water-rich poor stratum.
Disclosure of Invention
The utility model aims to provide a double-layer waterproof system for a subsurface tunnel of a water-rich poor stratum, which solves the problems in the background technology.
In order to achieve the above purpose, the present utility model provides the following technical solutions:
the double-layer waterproof system for the underground excavation tunnel of the water-rich poor stratum is provided with two layers of quick-setting permeable concrete layers, wherein the quick-setting permeable concrete layers comprise an inner layer and an outer layer, and a plastic water stop plate is arranged between the inner layer and the outer layer; the center of the tunnel bottom plate is provided with a water permeable ditch penetrating through the bottom plate, and a water permeable pile is arranged at the bottom of the tunnel towards the water permeable ditch; longitudinal U-shaped water collecting grooves are reserved at arch feet on two sides of the tunnel.
As a further scheme of the utility model: the thickness of the inner layer is 5 cm.
As still further aspects of the utility model: the outer layer has a thickness of 35 cm.
As still further aspects of the utility model: and a rainwater grid is arranged at the top end of the longitudinal U-shaped catchment ditch.
As still further aspects of the utility model: the number of the permeable piles is three, one is arranged in the middle line of the tunnel, and one is arranged on each side.
Compared with the prior art, the utility model has the beneficial effects that: the problems of underground water leakage and safety and stability of tunnel excavation face soil bodies can be effectively solved in water-rich poor stratum; the problem of traditional tunnel drainage facility bad condition, avoided the high cost that brings in the construction process of traditional tunnel drainage facility simultaneously is solved.
Drawings
Fig. 1 is a schematic structural view of the present utility model.
Fig. 2 is an enlarged partial schematic view of the tunnel bottom of the present utility model.
Fig. 3 is a schematic perspective view of the present utility model.
Wherein: 1 quick setting water permeable concrete layer, 2 plastic water stop plates, 3 longitudinal U-shaped water collecting grooves, 4 rain water grids, 5 water permeable grooves and 6 water permeable piles.
Detailed Description
The utility model will be described in detail below with reference to the drawings in connection with embodiments.
Referring to fig. 1-3, the utility model provides a double-layer waterproof system for a water-rich bad stratum undercut tunnel, which is provided with two quick-setting permeable concrete layers 1, wherein the quick-setting permeable concrete layers 1 comprise an inner layer and an outer layer, and a plastic water stop plate 2 is arranged between the inner layer and the outer layer; the center of the tunnel bottom plate is provided with a water permeable ditch 5 penetrating through the bottom plate, water permeable piles 6 are arranged at the bottom of the tunnel towards the water permeable ditch 5, the number of the water permeable piles 6 is three, the number of the water permeable piles is one in the middle line of the tunnel, and the number of the water permeable piles is one on both sides of the tunnel; the arch feet at two sides of the tunnel are respectively provided with a longitudinal U-shaped catchment ditch 3, and a rainwater grid 4 is arranged at the top end of the longitudinal U-shaped catchment ditch 3. Preferably, the inner layer has a thickness of 5 cm and the outer layer has a thickness of 35 cm.
The construction steps are as follows: 1. firstly hanging a single-layer net sheet rib after tunnel face excavation, and primarily spraying an inner layer to seal the tunnel face at time so as to ensure the stability of soil body of the tunnel face; 2. a plastic water stop plate 2 is hung outside the inner layer to form a first waterproof system, so that the water on the tunnel face is guaranteed to flow downwards to the arch bottom of the tunnel along the inner layer; 3. when the tunnel inverted arch is constructed, longitudinal U-shaped catchment ditches 3 are reserved at arch feet on two sides, broken stones are filled in the longitudinal U-shaped catchment ditches to form catchment channels along the tunnel direction, and water flowing downwards from the upper part of the tunnel through an inner layer is collected. The center of the tunnel bottom plate is provided with a water permeable ditch 5 penetrating through the bottom plate, three water permeable piles 6 are arranged at the bottom of the tunnel towards the water permeable ditch 5, one water permeable pile is arranged at the center line of the tunnel, and one water permeable pile is arranged at the two sides of the tunnel. So that the water of the tunnel face passes through the first waterproof system, most of the water is discharged to the bottom of the tunnel as main flow, and then permeates into the bottom of the tunnel through the water permeable piles 6, so that the pressure on primary support and structural water prevention of the tunnel is reduced; 4. the primary support steel arch is erected outside the plastic water stop plate 2, an outer layer is sprayed, primary support of the tunnel is completed, and water on the tunnel face is converged to the bottom of the tunnel along the primary sprayed inner layer under the protection of the plastic water stop plate 2, so that large-area water leakage of the primary support outer layer cannot be caused by convergence at the upper part of the tunnel; 5. a waterproof plate is applied to the primary support surface of the tunnel; 6. and (5) performing two layers of lining of the tunnel structure to finish the structure construction.
While the preferred embodiments of the present application have been described in detail, the present application is not limited to the above embodiments, and various changes may be made within the knowledge of those skilled in the art without departing from the spirit of the present application.
Claims (5)
1. The utility model provides a poor stratum undercut tunnel bilayer waterproof system of rich water which characterized in that: the rapid hardening water permeable concrete layer comprises an inner layer and an outer layer, and a plastic water stop plate is arranged between the inner layer and the outer layer; the center of the tunnel bottom plate is provided with a water permeable ditch penetrating through the bottom plate, and a water permeable pile is arranged at the bottom of the tunnel towards the water permeable ditch; longitudinal U-shaped water collecting grooves are reserved at arch feet on two sides of the tunnel.
2. The water-rich poor-formation undercut tunnel double-layer waterproof system according to claim 1, wherein: the thickness of the inner layer is 5 cm.
3. The water-rich poor-formation undercut tunnel double-layer waterproof system according to claim 2, wherein: the outer layer has a thickness of 35 cm.
4. A water-rich poor formation undercut tunnel bilayer waterproofing system according to claim 3, wherein: and a rainwater grid is arranged at the top end of the longitudinal U-shaped catchment ditch.
5. The water-rich poor-formation undercut tunnel double-layer waterproof system according to claim 4, wherein: the number of the permeable piles is three, one is arranged in the middle line of the tunnel, and one is arranged on each side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322357762.4U CN220748293U (en) | 2023-08-31 | 2023-08-31 | Double-layer waterproof system for underground excavation tunnel of poor water-rich stratum |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322357762.4U CN220748293U (en) | 2023-08-31 | 2023-08-31 | Double-layer waterproof system for underground excavation tunnel of poor water-rich stratum |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220748293U true CN220748293U (en) | 2024-04-09 |
Family
ID=90567762
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322357762.4U Active CN220748293U (en) | 2023-08-31 | 2023-08-31 | Double-layer waterproof system for underground excavation tunnel of poor water-rich stratum |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220748293U (en) |
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2023
- 2023-08-31 CN CN202322357762.4U patent/CN220748293U/en active Active
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