CN219317000U - Prevent cold district tunnel construction seam infiltration freeze injury's waterproof and drainage structure - Google Patents
Prevent cold district tunnel construction seam infiltration freeze injury's waterproof and drainage structure Download PDFInfo
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- CN219317000U CN219317000U CN202320249533.8U CN202320249533U CN219317000U CN 219317000 U CN219317000 U CN 219317000U CN 202320249533 U CN202320249533 U CN 202320249533U CN 219317000 U CN219317000 U CN 219317000U
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Abstract
The utility model belongs to the field of cold region tunnel freezing injury prevention and control, and in particular relates to a water prevention and drainage structure for preventing seepage and freezing injury of a cold region tunnel construction joint, which comprises a concave-convex drainage plate, a self-adhesive back-attached water stop belt and a drainage pipe; the concave-convex drainage plate is arranged between the waterproof plate and the two liners of the lining and corresponds to the position of the construction joint, the concave-convex surface of the concave-convex drainage plate faces the waterproof plate, and the back surface of the concave-convex drainage plate is glued with a self-adhesive back-attached water stop belt; one end of the drain pipe is arranged in the groove of the concave-convex drain plate, the end head is provided with a water permeable hole, and the other end extends into the drain ditch along the convex surface of the inverted arch; the lining is provided with a heat insulation board. According to the utility model, on one hand, by additionally arranging the concave-convex waterproof drainage plate and the drainage pipe below the inverted arch freezing line, a smooth drainage channel is provided for underground water after construction joints, and on the other hand, the surrounding rock and the underground water are insulated by combining the lining externally-attached insulating layer, so that the drainage system is ensured not to be frozen in winter.
Description
Technical Field
The utility model belongs to the field of cold region tunnel freezing injury prevention and treatment, and particularly relates to a water-proof and drainage structure for preventing seepage and freezing injury of a cold region tunnel construction joint.
Background
Water is the most common disadvantageous factor puzzling tunnel engineering, and any harmful disturbance in the tunnel construction or operation process causes damage or defect of the water-proof drainage system, and water damage is possibly caused. For a tunnel in a cold region, due to low temperature in the tunnel in winter, water damage can be further converted into freezing damage in a negative temperature state, and freezing damage phenomena such as lining frost heaving and cracking, arch ice hanging, road surface icing and the like occur, so that driving safety and structural stability are affected, and the freezing damage is mainly caused by failure of a drainage system. The cold region tunnel, especially cold region highway tunnel adopts the heat preservation that prevents frostbite to surrounding rock and drainage system outward often, but the heated board does not possess waterproof function, appears leaking water when the construction seam department, and the infiltration can lead to leaking water through the heated board, when air temperature is less than 0 degrees in the hole, and then can cause various freeze injury, like vault hanging icicle, side wall ice-hanging tumor and road surface icing etc. seriously influence safe driving.
According to statistics, more than 70% of operation tunnels have leakage water diseases, and the leakage rate of the circumferential construction joints exceeds 60%. Therefore, the problem of water leakage of the tunnel circumferential construction joint in the cold region is solved, and the method is very critical for reducing the freezing injury of the tunnel in the cold region. The reason that the tunnel circumferential construction joint is easy to leak water is mainly expressed as two aspects: on one hand, the traditional back-attached water stop, middle-buried steel edge water stop or expansion water stop strip is not perfect in installation process, difficult to install and construct, and difficult to guarantee in installation quality, so that concrete around the water stop strip cannot be compact, and the waterproof effect of a construction joint is greatly reduced; in the construction process, the waterproof board is often destroyed because of the original support at the back is unsmooth, the waterproof board lays quality, construction factor, because the back clearance of lining is very little, produces certain water pressure on the lining, and when the tunnel waterproof board outside water head is too high in the operation period, the waterproof system of tunnel will become invalid, and the groundwater behind the lining can get into between waterproof board and the lining, and when the waterproof effect of construction joint became invalid, the groundwater very easily got into the construction joint, produces the water leakage phenomenon.
Therefore, the cold region tunnel freezing injury can be obviously reduced by improving the water-proof and drainage condition after the cold region tunnel construction joint and carrying out anti-freezing heat preservation on surrounding rock and underground water. Based on the construction joint, the utility model provides the water-seepage-freezing-injury-preventing and water-draining structure for preventing the construction joint of the tunnel in the cold region, which fully drains the underground water after the construction joint on the basis of utilizing the heat preservation measure of the tunnel in the cold region, ensures that the underground water can smoothly drain to a drainage ditch after the construction joint in winter, ensures that the underground water cannot leak at the construction joint, further avoids the phenomena of vault ice column hanging, ice-forming on the side wall and road surface icing at the construction joint, and provides a guarantee for normal and safe operation of the tunnel in the cold region.
Disclosure of Invention
The utility model aims to provide a water-seepage and freezing injury prevention and drainage structure for a cold region tunnel construction joint, which is characterized in that on the basis of utilizing cold region tunnel heat preservation measures, a concave-convex drainage plate is arranged at the back of the construction joint, a drainage channel is provided for underground water at the construction joint, the underground water after the construction joint is fully drained, the smooth drainage of the underground water to a drainage ditch after the construction joint in winter is ensured, the underground water is prevented from leaking at the construction joint, and further, the phenomena of vault ice hanging columns, ice hanging on side walls and road surface icing at the construction joint are avoided, and the normal and safe operation of the cold region tunnel is ensured.
The aim of the utility model is realized by the following technical scheme: the water-seepage and freeze injury prevention and drainage structure for the tunnel lining construction joint in the cold region comprises a concave-convex drainage plate, a self-adhesive back-attached water stop belt and a drainage pipe; the concave-convex drainage plate is arranged between the waterproof plate and the two liners of the lining and corresponds to the position of the construction joint, the concave-convex surface of the concave-convex drainage plate faces the waterproof plate, and the back surface of the concave-convex drainage plate is glued with a self-adhesive back-attached water stop belt; one end of the drain pipe is arranged in a groove of the concave-convex drain plate, the end head is provided with a water permeable hole, and the other end of the drain pipe extends into the drain ditch along the convex surface of the inverted arch; the lining is provided with a heat insulation board.
The utility model adopts the external heat-insulating layer on the outer side of the second lining of the tunnel to insulate surrounding rock and a drainage system, thereby ensuring that groundwater behind the lining is not frozen in winter. Meanwhile, the concave-convex drainage plate is additionally arranged behind the construction joint, a drainage channel is provided for underground water at the construction joint, a drainage pipe is additionally arranged to guide the underground water to the drainage ditch, the drainage pipe is buried below the inverted arch freezing line, the underground water can be ensured to smoothly drain to the drainage ditch after the construction joint is constructed in winter, the water leakage at the construction joint is avoided, and further the occurrence of freezing injury is avoided.
Further, the width of the concave-convex drain board is 0.5-1.0m.
Further, the convex points of the concave-convex drainage plate are solid.
Further, the concave-convex drainage plates are arranged along the circumferential construction joint of the tunnel.
Furthermore, two water draining pipes are symmetrically arranged at the construction joint.
Further, the one end parcel that the drain pipe was equipped with the hole of permeating water has the filter screen. Preferably, the filter screen is made of geotechnical cloth.
Further, the water permeable holes are quincuncial water permeable holes.
Further, the lining structure includes: and a primary support, geotechnical cloth, a waterproof board, a secondary lining and a heat insulation board are sequentially arranged close to the surrounding rock surface. I.e. the lining is a common lining structure.
The beneficial effects of the utility model are as follows: according to the utility model, on one hand, by additionally arranging the concave-convex waterproof drainage plate and the drainage pipe below the inverted arch freezing line, a smooth drainage channel is provided for underground water after construction joints, and on the other hand, the surrounding rock and the underground water are insulated by combining the lining externally-attached insulating layer, so that the drainage system is ensured not to be frozen in winter. Under the combination of the two, the underground water can be smoothly discharged to the drainage ditch after the construction joint, the occurrence of freezing injury caused by water leakage at the construction joint is avoided, and the safe operation of the tunnel is ensured.
Drawings
FIG. 1 is a sectional view of a construction joint drainage structure;
FIG. 2 is a cross-sectional view of tunnel bottom lateral drainage;
in the figure, 1-primary support, 2-geotextile, 3-waterproof board, 4-concave-convex drainage board, 5-self-adhesive back-attached water stop, 6-drainage pipe, 7-construction joint, 8-heat insulation board, 9-secondary lining, 10-drainage ditch and 11-inverted arch.
Detailed Description
The technical solution of the present utility model will be described in further detail with reference to the accompanying drawings, but the scope of the present utility model is not limited to the following description.
Example 1
Referring to fig. 1 and 2, the water-proof and drainage structure for preventing seepage and freezing injury of a tunnel construction joint in a cold region of the present utility model is used for lining and inverted arch 11 structures, and both lining and inverted arch 11 can be set by adopting the prior art, for example, the lining structure of the present utility model is as follows: a primary support 1, geotechnical cloth 2, a waterproof board 3, a secondary lining 9 and a heat preservation board 8 are sequentially arranged near the surrounding rock surface. The convex lower end of the inverted arch 11 is provided with a drain 10.
The water-proof and drainage structure for preventing seepage and freezing injury of tunnel construction joints in cold areas comprises a concave-convex drainage plate 4 with the width of 0.5-1.0m, a self-adhesive back-attached water stop belt 5 and a drainage pipe 6; the concave-convex drainage plate 4 is arranged between the lined waterproof plate 3 and the second lining 9 and corresponds to the position of the construction joint 7, the concave-convex surface of the concave-convex drainage plate 4 faces the waterproof plate 3, and the back surface is glued with the self-adhesive back-attached water stop belt 5; one end of the drain pipe 6 is arranged in a groove of the concave-convex drain plate 4, a water permeable hole is arranged at the end, and the other end extends into the drain ditch 10 along the convex surface of the inverted arch 11; the lining is provided with a thermal insulation board 8.
After the waterproof board 3 is damaged in the construction or operation process, surrounding rock water seepage enters between the waterproof board 3 and the second lining 9, and as the waterproof board 3 and the second lining 9 are not provided with drainage structures, when the surrounding rock seepage amount is large, a certain water pressure is easily generated due to unsmooth drainage of underground water, and the construction joint is always a weak link of construction quality, so that the phenomenon that water seepage, ice hanging and road surface icing are extremely easy to occur in winter at the construction joint is caused. The waterproof and drainage structure is characterized in that the concave-convex drainage plate 4 with the width of 0.5-1.0m is additionally arranged between the waterproof plate 3 and the second lining 9 of the construction joint 7, and the convex points of the concave-convex drainage plate 4 are solid and can bear the surrounding rock pressure of more than 0.5MPa, so that the smoothness of a groundwater drainage channel can be ensured even under the action of the surrounding rock pressure. The concave-convex drainage plate is tightly glued with the self-sticking back-sticking water stop belt, a waterproof barrier of the lining is constructed, and even if groundwater behind the lining has certain water pressure, the construction joint can be ensured not to leak.
After the surrounding rock water seepage enters between the waterproof plate 3 and the second lining 9, the underground water can be smoothly discharged into the drainage ditch 10 in summer after the construction joint 7, so that the water seepage phenomenon of the construction joint can be avoided, the underground water can be smoothly discharged into the drainage ditch 10 even in winter, the water seepage and ice hanging phenomenon of the construction joint 7 is avoided, and the driving safety and the structural stability are ensured.
The foregoing is merely a preferred embodiment of the utility model, and it is to be understood that the utility model is not limited to the form disclosed herein but is not to be construed as excluding other embodiments, but is capable of numerous other combinations, modifications and environments and is capable of modifications within the scope of the inventive concept, either as taught or as a matter of routine skill or knowledge in the relevant art. And that modifications and variations which do not depart from the spirit and scope of the utility model are intended to be within the scope of the appended claims.
Claims (8)
1. The waterproof and drainage structure for preventing seepage and freezing injury of tunnel construction joints in cold areas is characterized by comprising a concave-convex drainage plate (4), a self-adhesive back-attached water stop belt (5) and a drainage pipe (6); the concave-convex drainage plate (4) is arranged between the waterproof plate (3) and the two liners (9) of the lining and corresponds to the position of the construction joint (7), the concave-convex surface of the concave-convex drainage plate (4) faces the waterproof plate (3), and the back surface of the concave-convex drainage plate is glued with the self-adhesive back-attached water stop belt (5); one end of the drain pipe (6) is arranged in a groove of the concave-convex drain plate (4), a water permeable hole is arranged at the end head, and the other end of the drain pipe extends into the drain ditch (10) along the convex surface of the inverted arch (11); the lining is provided with a heat insulation board (8).
2. The water-proof and drainage structure for preventing seepage and freezing injury of tunnel construction joints in cold areas according to claim 1, wherein the width of the concave-convex drainage plate (4) is 0.5-1.0m.
3. The water-proof and drainage structure for preventing seepage and freezing injury of tunnel construction joints in cold areas according to claim 1, wherein the convex points of the concave-convex drainage plates (4) are solid.
4. The water-proof and drainage structure for preventing seepage and freezing injury of tunnel construction joints in cold areas according to claim 1, wherein the concave-convex drainage plates (4) are arranged along the tunnel circumferential construction joints (7).
5. The water-proof and drainage structure for preventing seepage and freezing injury of tunnel construction joints in cold areas according to any one of claims 1 to 4, wherein two drainage pipes (6) are symmetrically arranged at the construction joints (7).
6. The water-proof and drainage structure for preventing seepage and freezing injury of cold area tunnel construction joints according to any one of claims 1-4, wherein a filter screen is wrapped at one end of the drainage pipe (6) provided with a water permeable hole.
7. The water-proof and drainage structure for preventing seepage and freezing injury of tunnel construction joints in cold areas according to any one of claims 1 to 4, wherein the water-permeable holes are quincuncial water-permeable holes.
8. The water-repellent structure for preventing seepage and freezing injury of tunnel construction joints in cold areas according to any one of claims 1 to 4, wherein the structure of the lining comprises: the primary support (1), geotechnical cloth (2), waterproof board (3), secondary lining (9) and heat preservation board (8) are arranged near the surrounding rock face in sequence.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320249533.8U CN219317000U (en) | 2023-02-20 | 2023-02-20 | Prevent cold district tunnel construction seam infiltration freeze injury's waterproof and drainage structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320249533.8U CN219317000U (en) | 2023-02-20 | 2023-02-20 | Prevent cold district tunnel construction seam infiltration freeze injury's waterproof and drainage structure |
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| Publication Number | Publication Date |
|---|---|
| CN219317000U true CN219317000U (en) | 2023-07-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202320249533.8U Active CN219317000U (en) | 2023-02-20 | 2023-02-20 | Prevent cold district tunnel construction seam infiltration freeze injury's waterproof and drainage structure |
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| CN (1) | CN219317000U (en) |
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2023
- 2023-02-20 CN CN202320249533.8U patent/CN219317000U/en active Active
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