Subway interval tunnel drainage system structure

Abstract

The application discloses a subway interval tunnel drainage system structure, which comprises a separated track bed, a water collecting groove, a sleeper A, a sleeper B, a plate bracing structure, a steel cover plate, at least two water pumps, a drainage ditch, a sedimentation tank, a communication pipe and a concrete pipe piece; the separated track bed is located at the bottom of a tunnel; the water collecting groove is located between the separated track beds on both sides; the water pumps are installed in the water collecting groove through mounting brackets; the drainage ditch and the sedimentation tank are located on both sides of the separated track bed; the drainage ditch is communicated with the sedimentation tank; the sedimentation tank is communicated with the water collecting groove; the plate bracing structure is arranged on the top of the water collecting groove at intervals; the plate bracing structure and the separated track bed are integrally poured structures; and the internal reinforcement of the plate bracing structure is fixedly connected with the internal reinforcement of the separated track bed. The subway interval tunnel drainage system structure is simple and convenient to construct, safe, low in construction cost and fast in construction.

Description

TECHNICAL FIELD

[0001] The present application relates to a subway interval tunnel drainage system structure, belonging to the field of underground engineering. BACKGROUND

[0002] When the subway interval tunnel drainage system structure is constructed by freezing method, the pump house of the drainage system and the connecting passage are made into an integrated structure, wherein the pump house is arranged directly below the connecting passage. This construction method not only has high construction cost, but also has great influence on the surrounding environment, long construction period and great construction risk. If the connecting passage of the tunnel is constructed by mechanical method, the pump house of the drainage system and the connecting passage cannot be made into an integrated structure, and the pump house cannot be arranged directly below the connecting passage. At this time, the pump house must be separated from the connecting passage. SUMMARY

[0003] The technical problem to be solved by the present application is to provide a subway interval tunnel drainage system structure which is simple, safe, low in construction cost and fast in construction.

[0004] In order to achieve the above technical effects, the technical scheme adopted by the present application is as follows:

[0005] A subway interval tunnel drainage system structure, comprising a separated track bed, a water collecting groove, a sleeper A, a sleeper B, a plate strut structure, a steel cover plate, at least two water pumps, a drainage ditch, a sedimentation tank, a communication pipe and a concrete pipe piece; the separated track bed is located at the bottom of the tunnel, the water collecting groove is located between the separated track beds on both sides, and the water pumps are installed in the water collecting groove through installation supports; the drainage ditch and the sedimentation tank are both located on both sides of the separated track bed, the drainage ditch is communicated with the sedimentation tank, and the sedimentation tank is communicated with the water collecting groove; the plate strut structures are arranged at intervals on the top of the water collecting groove, the plate strut structures and the separated track bed are an integrated pouring structure, and the internal reinforcement of the plate strut structures is fixedly connected with the internal reinforcement of the separated track bed. The sleeper A is a long sleeper, the sleeper B is a short sleeper, the sleeper A is laid on the plate strut structure and located on the separated track bed at both ends, and the sleeper B is laid on the separated track bed on both sides of the water collecting groove without the plate strut structure.

[0006] Further, an arc-shaped embedded steel plate is arranged on the inner side of the main tunnel pipe piece below the separated track bed, and the embedded steel plate is fixedly connected with the internal reinforcement of the main tunnel pipe piece through anchoring reinforcement.

[0007] Further, the drainage ditch is located at the outer end of the separated track bed, one side wall of the drainage ditch is formed by the inner arc surface of the concrete pipe piece constituting the tunnel, and a seepage-proof water-resisting layer is arranged on the inner arc surface.

[0008] Further, the sedimentation tank is partially widened to one side of the vertical center line of the tunnel cross section and deepened to the tunnel bottom by the drainage ditch, and the side wall of the sedimentation tank is formed by the inner arc surface of the concrete segment constituting the tunnel, and a waterproof layer is arranged on the inner arc surface.

[0009] Further, a communication pipe is embedded between the sedimentation tank and the water collecting groove inside the separated track bed, the upper end of the communication pipe is connected to the sedimentation tank, a filter screen is arranged at the water inlet of the sedimentation tank, and the communication pipe is connected to the water collecting groove in a downward inclined manner.

[0010] Further, the inner arc surface of the main tunnel segment and the side wall of the separated track bed on one side of the tunnel center line constitute the groove bottom and side wall of the water collecting groove, and the inner arc surface of the main tunnel segment constituting the groove bottom is provided with a waterproof layer.

[0011] Further, the gap between the side wall and end wall of the water collecting groove and the inner arc surface of the main tunnel segment is provided with a water-swelling sealant to prevent the accumulated water in the water collecting groove from seeping in, and the side surface, end surface and bottom surface of the water collecting groove are also provided with a waterproof layer to prevent the accumulated water from penetrating and corroding the concrete strength and the segment.

[0012] Further, the embedded steel plate on the main tunnel segment where the water pump is installed is a prefabricated steel plate with a pit, the pit serves as a water collecting pit for the water pump, and the steel plate is subjected to strict rust-proof treatment, and the water suction port of the water pump is installed in the water collecting pit.

[0013] Further, a steel cover plate is arranged above the water collecting groove, the steel cover plate is located between the adjacent two plate support structures and at the two ends of the water collecting groove, and the steel cover plate and the plate support structure shield the top of the water collecting groove to form a hidden groove. The steel cover plate can be easily opened to serve as an opening for cleaning the water collecting groove and installing and maintaining the water pump.

[0014] Further, a steel cover plate is arranged above the water pump, and a water outlet pipe mounting hole is reserved on the steel cover plate above the water pump to facilitate the installation of the water outlet pipe.

[0015] Compared with the prior art, the beneficial effects of the present application are:

[0016] 1. The track bed on both sides of the water collecting groove is connected by the plate support structure, and the two are fixedly connected by reinforcement and integrally poured and formed, thereby strengthening the overall strength of the track bed, the plate support structure provides a mounting base for the long sleeper, and the stability and safety of the running vehicles in the tunnel are ensured.

[0017] 2. The inner side of the main tunnel segment below the separated track bed is provided with an arc-shaped embedded steel plate, which increases the bearing strength of the tunnel segment and further ensures the stability and safety of the running vehicles in the tunnel, and at the same time, the main tunnel segment can be mass-produced in a factory, thereby reducing the complexity of construction, making the construction more convenient, improving the construction efficiency and reducing the cost.

[0018] 3. The drainage ditch is arranged at the outer side end of the separated track bed, and the inner arc surface of the concrete segment of the tunnel is used as one side wall of the drainage ditch, so that the formwork erection can be reduced during construction, and the construction is time-saving, labor-saving and cost-saving.

[0019] 4. The water pump is arranged in the water collecting tank, and the water pump water collecting pit is arranged at the embedded steel plate where the water pump is arranged, the communication pipe is embedded in the track bed, the waste water in the sedimentation tank is introduced into the water collecting tank through the communication pipe, and is gathered to the water pump water collecting pit, so that the separate drainage pump house at the position of the tunnel connecting passage is avoided, the influence of the construction of the drainage pump house on the environment is reduced, the construction safety and efficiency are improved, and the construction cost is reduced.

[0020] The above description is only a summary of the technical scheme of the present application, in order to more clearly understand the technical means of the present application, and can be implemented according to the content of the specification, and in order to make the above and other purposes, characteristics and advantages of the present application more obvious and easy to understand, the present application will be further described in detail below in combination with the drawings and examples. Obviously, the described examples are part of the examples of the present application, not all examples. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is a top view schematic diagram of the subway interval tunnel drainage system structure of the present application;

[0022] Figure 2 It is a sectional view schematic diagram of the subway interval tunnel drainage system structure of the present application at the plate support structure;

[0023] Figure 3 It is a sectional view schematic diagram of the subway interval tunnel drainage system structure of the present application at the steel cover plate;

[0024] Figure 4 It is Figure 3 the enlarged view of A part.

[0025] Explanation of each component number:

[0026] 1. Separated track bed, 2. Water collecting tank, 3. Sleeper A,

[0027] 4. Sleeper B, 5. Plate support structure, 6. Steel cover plate,

[0028] 7. Water pump, 8. Drainage ditch, 9. Sedimentation tank,

[0029] 10. Communication pipe, 11. Concrete segment, 12. Main tunnel segment,

[0030] 13. Embedded steel plate, 14. Anchoring rib, 15. Impermeable water-resisting layer,

[0031] 16. Water-swellable sealant; 17. Mounting bracket; 18. Water collection pit for water pump. Detailed Implementation

[0032] A drainage system structure for subway tunnels, such as Figures 1-4 As shown, the tunnel includes a separated track bed 1, a drainage trough 2, sleepers A3 and B4, a slab support structure 5, a steel cover plate 6, at least two water pumps 7, a drainage ditch 8, a sedimentation tank 9, a connecting pipe 10, and concrete segments 11. The separated track bed 1 is located at the bottom of the tunnel, and the drainage trough 2 is located between the two separated track beds 1 on both sides. The water pumps 7 are installed inside the drainage trough 2. The drainage ditch 8 and the sedimentation tank 9 are both located on both sides of the separated track bed 1. The drainage ditch 8 is connected to the sedimentation tank 9, and the sedimentation tank 9 is connected to the drainage trough 2. Sewage in the drainage ditch 8 enters the sedimentation tank 9 and flows into the drainage trough 2, and is then pumped away by the water pumps 7. The slab support structure 5 is located above the drainage trough 2 and is used to connect the separated track beds 1 on both sides of the drainage trough 2.

[0033] The main tunnel segments 12 below the separated track bed 1 are all made of special materials. The difference between these and the general-purpose concrete segments 11 used above is that the inner arc surface of the main tunnel segment 12 uses embedded steel plates 13. These embedded steel plates 13 are fixedly connected to the reinforcement within the main tunnel segment 12 via anchor bars 14. Both the main tunnel segment 12 and the concrete segments 11 can be prefabricated in the factory. The embedded steel plates 13 on the main tunnel segment 12 where the water pump 7 is installed are prefabricated steel plates with recesses, which serve as water collection pits 72 for the water pump. The main tunnel segment 12 with the water pump collection pits 72 is located at the deepest point of the water collection tank 2. The water pump collection pits 72 require strict rust prevention treatment and are used to collect water from the water collection tank 2.

[0034] The slab support structure 5 is spaced out on top of the drainage channel 2. The slab support structure 5 and the separated track bed 1 are integrally cast, and the internal reinforcement of the slab support structure 5 is fixedly connected to the internal reinforcement of the separated track bed 1 (this fixed connection should be understood as including the internal reinforcement of the slab support structure 5 as a local extension of the separated track bed reinforcement). Sleeper A3 is a long sleeper, and sleeper B4 is a short sleeper. Both sleepers A3 and B4 are laid at intervals along the length of the drainage channel 2. Sleeper A3 is laid on the slab support structure 5, and its two ends are fixed to the separated track bed 2 on both sides. Sleeper B4 is laid on the separated track bed 1 on both sides of the drainage channel 2 where there is no slab support structure 5.

[0035] The drainage ditch 8 is located at the two outer ends of the separated track bed 1, and the sedimentation tank 9 is formed by partially widening the drainage ditch 8 to one side of the vertical center line of the tunnel cross section and deepening to the direction of the tunnel bottom. The side wall of the drainage ditch 8 and the side wall of the sedimentation tank 9 are both formed by the inner arc surface of the concrete segment 11 constituting the tunnel, and a waterproof layer 15 is arranged on the inner arc surface. The communication pipe 10 is embedded inside the separated track bed 1 between the sedimentation tank 9 and the water collecting groove 2, the upper end of the communication pipe 10 is connected to the sedimentation tank 9, a filter screen is arranged at the water inlet of the communication pipe 10, the height of the water inlet is lower than the height of the bottom of the drainage ditch 8, and the communication pipe 10 is connected to the water collecting groove 2 in a downward direction.

[0036] The bottom and the side wall of the water collecting groove 2 are respectively formed by the inner arc surface of the main tunnel segment 12 and the side wall of the separated track bed 1 on the side close to the center line of the tunnel, and the inner arc surface of the main tunnel segment 12 constituting the bottom of the water collecting groove 2 is also provided with a waterproof layer 15. The gap between the side wall of the water collecting groove 2 and the inner arc surface of the main tunnel segment 12 is provided with a water-expanding sealant 16 to prevent the accumulated water in the water collecting groove 2 from seeping in. The side and the bottom of the water collecting groove 2 are also provided with a waterproof layer 15 to prevent the accumulated water from penetrating and corroding the concrete and the segment. The prefabricated steel cover plate 6 is arranged above the water collecting groove 2, and the steel cover plate 6 is arranged between the adjacent two plate support structures 5 and at the two ends of the water collecting groove 2, so that the steel cover plate 6 and the plate support structure 5 shield the top of the water collecting groove to form a hidden groove.

[0037] The water pump 7 is installed on the main tunnel segment 12 with a water pump sump 18 through the installation support 17, the water suction port of the water pump 7 is arranged in the water pump sump 18, and the top of the water collecting groove 2 at this position is covered with the movable steel cover plate 6, which can be easily opened, serving as an opening for cleaning the water collecting groove 2 and installing and maintaining the water pump 7. The steel cover plate 6 is also provided with a water outlet pipe mounting hole for facilitating the installation of the water outlet pipe 19.

[0038] The metro interval tunnel drainage system structure of the present application is simple and quick to construct, has good safety performance, and is low in construction cost.

[0039] The present application is not limited to the above specific embodiments, and various modifications made by those skilled in the art without creative labor are within the protection scope of the present application.

Claims

1. A drainage system structure for a subway tunnel, comprising a separated track bed, a water collection channel, sleepers A and B, a plate support structure, a steel cover plate, at least two water pumps, a drainage ditch, a sedimentation tank, a connecting pipe, and concrete segments; the separated track bed is located at the bottom of the tunnel, the water collection channel is located between the two separated track beds, and the water pumps are installed in the water collection channel via mounting brackets; the drainage ditch and sedimentation tank are both located on both sides of the separated track bed, the drainage ditch is connected to the sedimentation tank, and the sedimentation tank is connected to the water collection channel; characterized in that: The plate-support structures are spaced apart on the top of the water collection trough. The plate-support structures and the separated track bed are integrally cast, and the internal reinforcement of the plate-support structures is fixedly connected to the internal reinforcement of the separated track bed. A steel cover plate is provided on the top of the water collection trough. The steel cover plate is located between two adjacent plate-support structures and at both ends of the water collection trough. The steel cover plate and the plate-support structures cover the top of the water collection trough to form a hidden trough. The steel cover plate can be easily opened to serve as an opening for cleaning the water collection trough and for installing and maintaining the water pump.

2. The structure of a subway tunnel drainage system according to claim 1, characterized in that: An arc-shaped embedded steel plate is provided on the inner side of the main tunnel segment below the separated track bed. The embedded steel plate is fixedly connected to the reinforcement in the main tunnel segment by anchor bars.

3. The structure of a subway tunnel drainage system according to claim 1, characterized in that: The drainage ditch is located at the two outer ends of the separated track bed. One side wall of the drainage ditch is formed by the inner arc surface of the concrete pipe segment that constitutes the tunnel, and the inner arc surface is provided with a seepage-proof and water-proof layer.

4. The structure of a subway tunnel drainage system according to claim 1, characterized in that: The sedimentation tank is formed by widening the drainage ditch locally towards the vertical centerline of the tunnel cross section and deepening it towards the bottom of the tunnel. One side wall of the sedimentation tank is formed by the inner arc surface of the concrete pipe segment that constitutes the tunnel, and the inner arc surface is provided with a seepage-proof and water-proof layer.

5. The structure of a subway tunnel drainage system according to claim 1, characterized in that: A connecting pipe is pre-embedded inside the separated track bed and between the sedimentation tank and the water collection tank; the upper end of the connecting pipe is connected to the sedimentation tank, a filter screen is installed at its inlet, and the connecting pipe is obliquely downward connected to the water collection tank.

6. The structure of a subway tunnel drainage system according to claim 2, characterized in that: The inner arc surface of the main tunnel segment and the sidewalls of the two separated track beds on the side near the tunnel centerline constitute the bottom and sidewalls of the water collection channel, and the inner arc surface of the main tunnel segment that constitutes the bottom of the water collection channel is provided with an impermeable and waterproof layer.

7. The structure of a subway tunnel drainage system according to claim 6, characterized in that: The gap between the side wall of the water collection channel and the inner arc surface of the main tunnel segment is provided with water-swellable sealant; the side end face and bottom surface of the water collection channel are also provided with anti-seepage and water-proof layers.

8. The structure of a subway tunnel drainage system according to claim 2, characterized in that: The embedded steel plate on the main tunnel segment where the water pump is installed is a prefabricated steel plate with a recess. The recess serves as a water collection pit for the water pump and is subject to strict anti-rust treatment. The water pump's suction port is installed inside the water collection pit.

9. The structure of a subway tunnel drainage system according to claim 1, characterized in that: The water pump is covered by a steel cover plate, and the steel cover plate above the water pump has a pre-drilled hole for installing the water outlet pipe.

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