CN111794782A - Tunnel track ballast bed water-drainage preventing structure and construction method thereof - Google Patents
Tunnel track ballast bed water-drainage preventing structure and construction method thereof Download PDFInfo
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- CN111794782A CN111794782A CN202010652506.6A CN202010652506A CN111794782A CN 111794782 A CN111794782 A CN 111794782A CN 202010652506 A CN202010652506 A CN 202010652506A CN 111794782 A CN111794782 A CN 111794782A
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/38—Waterproofing; Heat insulating; Soundproofing; Electric insulating
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F16/00—Drainage
- E21F16/02—Drainage of tunnels
Abstract
The invention relates to the technical field of tunnel engineering and discloses a tunnel track ballast bed water-proof and drainage structure and a construction method thereof. Wherein, tunnel track railway roadbed drainage structures includes tunnel body, filling layer, track railway roadbed, first infiltration pipe and second infiltration pipe. Be equipped with first infiltration pipe and a plurality of second infiltration pipe between the inner wall of filling layer and tunnel body, first infiltration pipe is along the longitudinal extension of tunnel body, and the second infiltration pipe matches along the transversal arrangement of tunnel body and with the interior bottom of tunnel body, and a plurality of second infiltration pipes all communicate with first infiltration pipe, and a plurality of second infiltration pipes set up the both sides at first infiltration pipe along longitudinal arrangement. According to the tunnel track ballast bed waterproof and drainage structure provided by the invention, the water seepage grid is formed below the track ballast bed by utilizing the first water seepage pipe and the second water seepage pipe, so that water seepage below the track ballast bed can seep into the water seepage pipes in time and then is discharged through the water seepage pipes, and thus the deformation hazard of the water seepage to the track ballast bed can be effectively reduced.
Description
Technical Field
The invention relates to the technical field of tunnel engineering, in particular to a tunnel track ballast bed waterproof and drainage structure and a construction method thereof.
Background
With the acceleration of the modernization process and the infrastructure construction, more and more cities begin to construct urban rail transit, and underground spaces are developed and utilized gradually, and the waterproof and drainage technology of the related underground structure is greatly improved in recent years, and meanwhile, a plurality of problems and hidden dangers are exposed. Due to the rapid construction rhythm, people are free of time summarization and time adjustment on various aspects such as design, construction, management and the like. The problems of poor structural compactness and impermeability, cracking, leakage and the like occur in part of tunnels and underground engineering. Therefore, all the construction parties need to combine the engineering construction condition under the current large environment, strengthen the monitoring of the design, construction and other links, and pertinently improve and optimize the design on the basis of further coordination and cooperation of the structure and the waterproof drainage.
At present, although a subway tunnel is designed to be completely waterproof, various geological conditions and emergency situations are inevitable in actual construction, and therefore the water leakage phenomenon occurs. Particularly, when leakage occurs in the subway operation period, the leakage water is gathered below the track bed, and when certain pressure is accumulated, the track bed is lifted, so that the speed limit of subway operation is caused, and safety accidents can occur seriously. Therefore, it is necessary to design a special waterproof and drainage structure for a tunnel track bed to solve the above problems.
Disclosure of Invention
One object of the present invention is to provide a waterproof and drainage structure for a track bed of a tunnel track, which can drain leakage water below the track bed, effectively reduce deformation damage of the track bed caused by the leakage water, and ensure operation safety of a subway.
Another object of the present invention is to provide a construction method of a waterproof and drainage structure for a tunnel track bed, which can prevent water leakage from causing the track bed to lift up, and improve safety of subway operation.
In order to achieve the purpose, the invention adopts the following technical scheme:
a tunnel track bed waterproof drain structure comprising:
the tunnel pipe body is annular;
the filling layer is arranged at the inner bottom of the tunnel pipe body;
the track bed is arranged on the filling layer;
the filling layer with be equipped with at least one first infiltration pipe and a plurality of second infiltration pipe between the inner wall of tunnel body, first infiltration pipe is followed the longitudinal extension of tunnel body, the second infiltration pipe is followed the transverse arrangement of tunnel body and with the interior bottom matching of tunnel body, it is a plurality of the second infiltration pipe all with first infiltration pipe intercommunication, it is a plurality of the second infiltration pipe is followed longitudinal arrangement sets up the both sides of first infiltration pipe.
As a preferable scheme of the tunnel track ballast bed water drainage prevention structure, the first water seepage pipe and/or the second water seepage pipe are made of water seepage concrete.
As a preferable scheme of the tunnel track ballast bed water drainage prevention structure, a first positioning groove extending along the longitudinal direction is formed in the inner wall of the tunnel pipe body, and the first water seepage pipe is installed in the first positioning groove; and/or
The inner wall of the tunnel pipe body is provided with a second positioning groove which is arranged transversely along the tunnel pipe body and matched with the inner bottom of the tunnel pipe body, and the second water seepage pipe is arranged in the second positioning groove.
As a preferable scheme of the tunnel track ballast bed water drainage prevention structure, the cross sectional area of the inner cavity of the first water seepage pipe is larger than that of the inner cavity of the second water seepage pipe.
As a preferable scheme of the tunnel track ballast bed water drainage preventing structure, the first water seepage pipe is positioned at the bottommost part of the tunnel pipe body.
As the preferred scheme of the tunnel track ballast bed water drainage preventing structure, a plurality of first water seepage pipes are arranged along the central ring direction of the tunnel pipe body at intervals, each first water seepage pipe is arranged on two sides and provided with a plurality of second water seepage pipes, and the two adjacent first water seepage pipes share the second water seepage pipes.
As a preferable scheme of the tunnel track ballast bed water drainage preventing structure, one of the first water seepage pipes is located at the bottommost part of the tunnel pipe body, and the rest of the first water seepage pipes are symmetrically arranged at two sides of the bottommost part of the first water seepage pipes.
A construction method of a tunnel track bed waterproof and drainage structure is based on the tunnel track bed waterproof and drainage structure, and comprises the following steps:
setting up arrangement modes, number and size of first water seepage pipes and second water seepage pipes according to the diameter of a tunnel pipe body to be constructed and geological conditions of the tunnel pipe body, wherein the first water seepage pipes extend along the longitudinal direction of the tunnel pipe body, the second water seepage pipes are transversely arranged along the tunnel pipe body and matched with the inner bottom of the tunnel pipe body, and a plurality of second water seepage pipes are longitudinally arranged on two sides of the first water seepage pipes;
prefabricating the first water seepage pipe and the second water seepage pipe according to the planned number and size of the first water seepage pipe and the second water seepage pipe;
prefabricating the tunnel pipe body;
constructing the tunnel pipe body;
according to a planned arrangement mode of the first water seepage pipe and the second water seepage pipe, the first water seepage pipe and the second water seepage pipe are arranged at the inner bottom of the tunnel pipe body, and the second water seepage pipe is communicated with the first water seepage pipe;
pouring a filling layer at the inner bottom of the tunnel pipe body, so that the filling layer is filled on the first water seepage pipe and the second water seepage pipe;
and constructing a track bed on the filling layer.
As a preferable scheme of the construction method of the tunnel track ballast bed waterproof and drainage structure, when the tunnel pipe body is prefabricated, corresponding first positioning grooves are reserved on the inner wall of the bottom of the tunnel pipe body according to the planned arrangement mode, number and size of the first water seepage pipes, and corresponding second positioning grooves are reserved on the inner wall of the bottom of the tunnel pipe body according to the planned arrangement mode, number and size of the second water seepage pipes.
As a preferable scheme of the construction method of the tunnel track ballast bed waterproof and drainage structure, when the first water seepage pipe and the second water seepage pipe are installed, the first water seepage pipe is installed in the first positioning groove, and the second water seepage pipe is installed in the second positioning groove.
The invention has the beneficial effects that:
according to the tunnel track ballast bed waterproof and drainage structure provided by the invention, the first water seepage pipe extending along the longitudinal direction of the tunnel pipe body and the second water seepage pipe which is transversely arranged along the tunnel pipe body and is matched with the inner bottom of the tunnel pipe body are arranged between the filling layer and the inner wall of the tunnel pipe body, and the plurality of second water seepage pipes are longitudinally arranged on two sides of the first water seepage pipe, so that a water seepage grid is formed below the track ballast bed, so that leakage water below the track ballast bed can timely seep into the adjacent first water seepage pipe or the adjacent second water seepage pipe and then is discharged through the first water seepage pipe and the second water seepage pipe, and therefore, the deformation hazard of the leakage water to the track ballast bed can be effectively reduced, the subway can run at normal speed, and the operation safety of the subway can be ensured.
The construction method of the tunnel track bed waterproof and drainage structure provided by the invention is simple and easy to implement, can prevent the track bed from being lifted up due to water leakage, and improves the safety of subway operation.
Drawings
Fig. 1 is a sectional view of a tunnel track bed waterproof structure according to an embodiment of the present invention;
fig. 2 is a cross-sectional view of a tunnel tube according to an embodiment of the present invention;
FIG. 3 is a top view of an arrangement of a first water permeating tube and a second water permeating tube according to a first embodiment of the present invention;
fig. 4 is a sectional view of a tunnel track bed waterproof structure according to a second embodiment of the present invention;
fig. 5 is a plan view of an arrangement of the first water seepage pipe and the second water seepage pipe according to a second embodiment of the present invention.
In the figure:
1-tunnel tube body; 11-a first positioning groove; 12-a second positioning groove;
2-a first water seepage pipe;
3-a second water seepage pipe;
4-a filling layer;
5-track bed.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example one
As shown in fig. 1 and 2, the present embodiment provides a waterproof and drainage structure for a tunnel track bed, which includes a tunnel pipe body 1, a filling layer 4, a track bed 5, a first water seepage pipe 2 and a second water seepage pipe 3. Wherein, tunnel body 1 is the ring shape. The filling layer 4 is arranged at the inner bottom of the tunnel pipe body 1, and the filling layer 4 is formed by pouring concrete. The track bed 5 is disposed on the packed layer 4. Be equipped with at least one first infiltration pipe 2 and a plurality of second infiltration pipe 3 between the inner wall of filling layer 4 and tunnel body 1, first infiltration pipe 2 is along the longitudinal extension of tunnel body 1, second infiltration pipe 3 along the transversal arrangement of tunnel body 1 and with the interior bottom match of tunnel body 1, a plurality of second infiltration pipes 3 all communicate with first infiltration pipe 2, a plurality of second infiltration pipes 3 set up the both sides at first infiltration pipe 2 along longitudinal arrangement.
The tunnel track ballast bed water drainage preventing structure that this embodiment provided, through set up the first infiltration pipe 2 along the longitudinal extension of tunnel body 1 and along the transversal arrangement of tunnel body 1 and the second infiltration pipe 3 that matches with the interior bottom of tunnel body 1 between the inner wall of filling layer 4 and tunnel body 1, and make a plurality of second infiltration pipes 3 set up the both sides at first infiltration pipe 2 along longitudinal arrangement, thereby water seepage net has been formed in the below of track ballast 5, the infiltration water that makes track ballast 5 below can infiltrate in time in neighbouring first infiltration pipe 2 or second infiltration pipe 3, then discharge through first infiltration pipe 2 and second infiltration pipe 3, thereby can effectively reduce the deformation hazard that the infiltration water produced track ballast 5, guarantee that the subway can operate under normal speed and travel, ensure the operation safety of subway.
Further, a plurality of second water seepage pipes 3 are symmetrically arranged on both sides of the first water seepage pipe 2 along the longitudinal direction.
In this embodiment, the first water seepage pipe 2 is located at the bottom of the tunnel pipe body 1, so that the water seepage in the second water seepage pipe 3 can smoothly and rapidly flow together into the first water seepage pipe 2, and then is uniformly pumped out of the tunnel by the first water seepage pipe 2. Namely, the second water seepage pipe 3 is used as a water seepage branch pipe, the first water seepage pipe 2 is used as a water seepage main pipe, and seepage water can be gathered into the water seepage main pipe through the water seepage branch pipe and then is discharged by a water seepage main pipe pump.
In order to further enable the leakage water in the second water seepage pipe 3 to smoothly and rapidly converge to the first water seepage pipe 2, the cross-sectional area of the inner cavity of the first water seepage pipe 2 is larger than that of the inner cavity of the second water seepage pipe 3.
Alternatively, the first and second water-permeating pipes 2 and 3 of the present embodiment are each made of water-permeating concrete. The first water seepage pipe 2 and the second water seepage pipe 3 are made of water seepage concrete, so that the first water seepage pipe 2 and the second water seepage pipe 3 have good water seepage performance and good structural strength.
As shown in fig. 3, a first positioning groove 11 extending in a longitudinal direction is formed on an inner wall of the tunnel tube body 1, and the first water seepage tube 2 is installed in the first positioning groove 11. Through setting up first constant head tank 11, be favorable to guaranteeing the accuracy nature of first infiltration pipe 2 mounted position, improve the installation rate of first infiltration pipe 2, be favorable to guaranteeing the positional stability after first infiltration pipe 2 installs simultaneously.
As shown in fig. 3, a second positioning groove 12 is provided on the inner wall of the tunnel tube body 1, which is arranged along the transverse direction of the tunnel tube body 1 and matches with the inner bottom of the tunnel tube body 1, and the second water seepage tube 3 is installed in the second positioning groove 12. Similarly, through setting up second constant head tank 12, be favorable to guaranteeing the accuracy nature of second constant head tank 12 mounted position, improve the installation rate of second constant head tank 12, be favorable to guaranteeing the position stability after second constant head tank 12 installs simultaneously.
The tunnel body 1 that this embodiment provided is formed along hoop and vertical concatenation by a plurality of shield structures section of jurisdiction, and first infiltration pipe 2 is located outside the vertical concatenation seam of shield structure section of jurisdiction, and second infiltration pipe 3 is located outside the hoop concatenation seam of shield structure section of jurisdiction, and the vertical concatenation seam of shield structure section of jurisdiction is kept away from to first infiltration pipe 2 promptly, and the hoop concatenation seam of shield structure section of jurisdiction is kept away from to second infiltration pipe 3 to avoid the concatenation seam to cause the influence to the structural strength of first infiltration pipe 2 and second infiltration pipe 3. Specifically, in the present embodiment, the shield segments are made of reinforced concrete.
In this embodiment, the splicing seam of the shield segment is provided with a sealing structure. Optionally, the sealing structure includes an elastomeric gasket, a water-swellable rubber strip, and/or caulking.
Example two
The present embodiment is different from the first embodiment in that the first water seepage pipe 2 and the second water seepage pipe 3 are arranged in different manners and in different numbers, and the corresponding first positioning groove 11 and the second positioning groove 12 are arranged in different manners and in different numbers.
As shown in fig. 4 and 5, the plurality of first water seepage pipes 2 are arranged at intervals along the central ring direction of the tunnel pipe body 1, a plurality of second water seepage pipes 3 are arranged on both sides of each first water seepage pipe 2, and the second water seepage pipes 3 are shared between two adjacent first water seepage pipes 2. According to the actual waterproof and drainage requirement, the circumferential arrangement quantity of the first water seepage pipes 2 can be increased, and meanwhile, the quantity of the second water seepage pipes 3 is correspondingly increased, so that the water seepage grids are denser.
Further, one of a plurality of first infiltration pipe 2 is located the bottommost of tunnel body 1, and remaining first infiltration pipe 2 symmetry sets up the both sides at the first infiltration pipe 2 of bottommost.
Specifically, the three first water seepage pipes 2 are arranged along the central ring direction of the tunnel pipe body 1 at equal intervals. One of the three first water seepage pipes 2 is positioned at the bottommost part of the tunnel pipe body 1, and the rest two first water seepage pipes 2 are symmetrically arranged at two sides of the first water seepage pipe 2 at the bottommost part.
EXAMPLE III
The embodiment provides a construction method of a tunnel track bed waterproof and drainage structure, which is based on the tunnel track bed waterproof and drainage structures in the first embodiment and the second embodiment, and comprises the following steps:
setting up arrangement modes, quantity and sizes of a first water seepage pipe 2 and a second water seepage pipe 3 according to the diameter of a tunnel pipe body 1 to be constructed and geological conditions of the tunnel pipe body 1, wherein the first water seepage pipe 2 extends along the longitudinal direction of the tunnel pipe body 1, the second water seepage pipe 3 is transversely arranged along the tunnel pipe body 1 and matched with the inner bottom of the tunnel pipe body 1, and a plurality of second water seepage pipes 3 are longitudinally arranged on two sides of the first water seepage pipe 2;
prefabricating a first water seepage pipe 2 and a second water seepage pipe 3 according to the planned number and size of the first water seepage pipe 2 and the second water seepage pipe 3;
prefabricating a tunnel pipe body 1;
constructing the tunnel pipe body 1;
according to a planned arrangement mode of the first water seepage pipe 2 and the second water seepage pipe 3, the first water seepage pipe 2 and the second water seepage pipe 3 are arranged at the inner bottom of the tunnel pipe body 1, and the second water seepage pipe 3 is communicated with the first water seepage pipe 2;
pouring a filling layer 4 at the inner bottom of the tunnel pipe body 1, so that the filling layer 4 is filled on the first water seepage pipe 2 and the second water seepage pipe 3;
an orbital bed 5 is applied to the packed bed 4.
The construction method of the tunnel track ballast bed waterproof and drainage structure provided by the embodiment is simple and easy to implement, and strong in adaptability, the first water seepage pipes 2 extending along the longitudinal direction and the second water seepage pipes 3 transversely arranged and matched with the inner bottom of the tunnel pipe body 1 are installed in the tunnel pipe body 1, and the plurality of second water seepage pipes 3 are longitudinally arranged on two sides of the first water seepage pipes 2, so that a water seepage grid is formed below the track ballast bed 5, water seepage below the track ballast bed 5 can timely infiltrate into the adjacent first water seepage pipes 2 or second water seepage pipes 3 and then is discharged through the first water seepage pipes 2 and the second water seepage pipes 3, thereby effectively reducing deformation hazard of the water seepage to the track ballast bed 5, preventing the track ballast bed 5 from being lifted, and improving the safety of subway operation.
Further, when the tunnel pipe body 1 is prefabricated, corresponding first positioning grooves 11 are reserved on the inner wall of the bottom of the tunnel pipe body 1 according to the planned arrangement mode, the planned number and the planned size of the first water seepage pipes 2, and corresponding second positioning grooves 12 are reserved on the inner wall of the bottom of the tunnel pipe body 1 according to the planned arrangement mode, the planned number and the planned size of the second water seepage pipes 3.
Further, when the first and second water permeation pipes 2 and 3 are installed, the first water permeation pipe 2 is installed in the first positioning groove 11, and the second water permeation pipe 3 is installed in the second positioning groove 12. Utilize first constant head tank 11 and second constant head tank 12, be favorable to guaranteeing the accuracy nature of first infiltration pipe 2 and the 3 mounted position of second infiltration pipe, improve the installation rate of first infiltration pipe 2 and second infiltration pipe 3, be favorable to guaranteeing the positional stability after first infiltration pipe 2 and the 3 mounted of second infiltration pipe simultaneously.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and substitutions can be made without departing from the technical principle of the present invention, and these modifications and substitutions should also be regarded as the protection scope of the present invention.
Claims (10)
1. The utility model provides a tunnel track railway roadbed drainage structures which characterized in that includes:
the tunnel pipe body (1) is annular;
a filling layer (4) arranged at the inner bottom of the tunnel tube body (1);
a track bed (5) disposed on the packed bed (4);
filling layer (4) with be equipped with at least one first infiltration pipe (2) and a plurality of second infiltration pipe (3) between the inner wall of tunnel body (1), first infiltration pipe (2) are followed the longitudinal extension of tunnel body (1), second infiltration pipe (3) are followed the transverse arrangement of tunnel body (1) and with the interior bottom matching of tunnel body (1), it is a plurality of second infiltration pipe (3) all with first infiltration pipe (2) intercommunication, it is a plurality of second infiltration pipe (3) are followed longitudinal arrangement sets up the both sides of first infiltration pipe (2).
2. The tunnel track ballast bed waterproof and drainage structure according to claim 1, wherein the first and/or second water seepage pipe (2, 3) is made of water-permeable concrete.
3. The tunnel track ballast bed waterproof and drainage structure according to claim 1, wherein the inner wall of the tunnel pipe body (1) is provided with a first positioning groove (11) extending along the longitudinal direction, and the first seepage pipe (2) is installed in the first positioning groove (11); and/or
The tunnel water seepage device is characterized in that a second positioning groove (12) which is transversely arranged along the tunnel pipe body (1) and matched with the inner bottom of the tunnel pipe body (1) is formed in the inner wall of the tunnel pipe body (1), and a second water seepage pipe (3) is installed in the second positioning groove (12).
4. The tunnel track ballast bed waterproof and drainage structure according to claim 1, wherein the cross-sectional area of the inner cavity of the first water seepage pipe (2) is larger than that of the inner cavity of the second water seepage pipe (3).
5. The tunnel track bed waterproof and drainage structure according to claim 1, characterized in that the first seepage pipe (2) is located at the bottommost portion of the tunnel pipe body (1).
6. The tunnel track ballast bed waterproof and drainage structure according to claim 1, wherein a plurality of first water seepage pipes (2) are arranged at intervals along the central circumferential direction of the tunnel pipe body (1), a plurality of second water seepage pipes (3) are arranged on both sides of each first water seepage pipe (2), and the second water seepage pipes (3) are shared between two adjacent first water seepage pipes (2).
7. The tunnel track ballast bed waterproof and drainage structure according to claim 6, wherein one of the first water seepage pipes (2) is located at the bottommost part of the tunnel pipe body (1), and the rest of the first water seepage pipes (2) are symmetrically arranged at two sides of the bottommost first water seepage pipe (2).
8. A construction method of a tunnel track bed waterproof and drainage structure, characterized in that based on the tunnel track bed waterproof and drainage structure according to any one of claims 1 to 7, the construction method of the tunnel track bed waterproof and drainage structure comprises:
setting up arrangement modes, quantity and sizes of a first water seepage pipe (2) and a second water seepage pipe (3) according to the diameter of a tunnel pipe body (1) to be constructed and geological conditions of the tunnel pipe body (1), wherein the first water seepage pipe (2) extends along the longitudinal direction of the tunnel pipe body (1), the second water seepage pipe (3) is arranged along the transverse direction of the tunnel pipe body (1) and matched with the inner bottom of the tunnel pipe body (1), and a plurality of second water seepage pipes (3) are arranged on two sides of the first water seepage pipe (2) along the longitudinal direction;
prefabricating the first water seepage pipe (2) and the second water seepage pipe (3) according to the planned number and size of the first water seepage pipe (2) and the second water seepage pipe (3);
prefabricating the tunnel pipe body (1);
constructing the tunnel pipe body (1);
according to a planned arrangement mode of the first water seepage pipe (2) and the second water seepage pipe (3), the first water seepage pipe (2) and the second water seepage pipe (3) are installed at the inner bottom of the tunnel pipe body (1), and the second water seepage pipe (3) is communicated with the first water seepage pipe (2);
pouring a filling layer (4) at the inner bottom of the tunnel pipe body (1) to enable the filling layer (4) to be filled and covered on the first water seepage pipe (2) and the second water seepage pipe (3);
and constructing a track bed (5) on the filling layer (4).
9. The construction method of the tunnel track bed waterproof and drainage structure according to claim 8, characterized in that when the tunnel pipe body (1) is prefabricated, corresponding first positioning grooves (11) are reserved on the inner wall of the bottom of the tunnel pipe body (1) according to the planned arrangement, number and size of the first water seepage pipes (2), and corresponding second positioning grooves (12) are reserved on the inner wall of the bottom of the tunnel pipe body (1) according to the planned arrangement, number and size of the second water seepage pipes (3).
10. The construction method of the waterproof and drainage structure of the tunnel track bed according to claim 9, wherein the first water seepage pipe (2) is installed in the first positioning groove (11) and the second water seepage pipe (3) is installed in the second positioning groove (12) when the first water seepage pipe (2) and the second water seepage pipe (3) are installed.
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| CN112900160A (en) * | 2021-01-20 | 2021-06-04 | 东南大学 | Self-drainage device and drainage method for subway track bed |
| CN112900160B (en) * | 2021-01-20 | 2022-07-08 | 东南大学 | Self-drainage device and drainage method for subway track bed |
| CN113404514A (en) * | 2021-06-15 | 2021-09-17 | 广州地铁设计研究院股份有限公司 | Tunnel waterproof structure and construction method thereof |
| CN113404514B (en) * | 2021-06-15 | 2023-11-21 | 广州地铁设计研究院股份有限公司 | Tunnel waterproof structure and construction method thereof |
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Application publication date: 20201020 |