CN217029010U

CN217029010U - Drainage system structure of tunnel between subway

Info

Publication number: CN217029010U
Application number: CN202121295316.XU
Authority: CN
Inventors: 李向红
Original assignee: Zhongyifeng Construction Group Co Ltd
Current assignee: Zhongyifeng Construction Group Co Ltd
Priority date: 2021-06-10
Filing date: 2021-06-10
Publication date: 2022-07-22
Anticipated expiration: 2031-06-10

Abstract

The utility model discloses a drainage system structure of a tunnel between subway sections, which comprises a separated type track bed, a water collection tank, a sleeper A, a sleeper B, a plate support structure, a steel cover plate, at least two water pumps, a drainage ditch, a sedimentation tank, a communication pipe and a concrete pipe piece, wherein the water collection tank is arranged on the sleeper A; the separated type track beds are positioned at the bottom in the tunnel, the water collection tank is positioned between the separated type track beds on the two sides, and the water suction pump is installed in the water collection tank through the installation support; the drainage ditch and the sedimentation tank are positioned on two sides of the separation type track bed, the drainage ditch is communicated with the sedimentation tank, and the sedimentation tank is communicated with the water collection tank; the method is characterized in that: the board props the structure interval and sets up in catchment groove top, and board props the structure and pours the structure as an organic whole with disconnect-type railway roadbed, and the inside arrangement of reinforcement of board props the structure and the inside arrangement of reinforcement fixed connection of disconnect-type railway roadbed. The drainage system structure of the subway interval tunnel is simple and convenient to construct, safe, low in construction cost and quick in construction.

Description

Interval tunnel drainage system structure of subway

Technical Field

The utility model relates to a drainage system structure of a tunnel between subway sections, belonging to the field of underground engineering.

Background

When the drainage system structure of the subway interval tunnel is constructed by adopting a freezing method, a pump room of the drainage system and the communication channel are made into an integral structure, wherein the pump room is arranged under the communication channel. The construction mode has the advantages of high construction cost, large influence on the surrounding environment, long construction period and high construction risk. If the tunnel connection channel is constructed by adopting a mechanical method, the pump room of the drainage system and the connection channel cannot be made into an integral structure, and the pump room is arranged under the connection channel. In this case, the pump room must be separated from the communication channel.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem of providing a drainage system structure of a subway interval tunnel, which is simple and safe in construction, low in construction cost and rapid in construction.

In order to achieve the technical effects, the technical scheme adopted by the utility model is as follows:

a drainage system structure of a tunnel between subway sections comprises a separated track bed, a water collecting groove, a sleeper A, a sleeper B, a plate support structure, a steel cover plate, at least two water suction pumps, a drainage ditch, a sedimentation tank, a communicating pipe and a concrete segment; the separated type track beds are positioned at the bottom in the tunnel, the water collection tank is positioned between the separated type track beds on the two sides, and the water suction pump is installed in the water collection tank through the installation support; the drainage ditch and the sedimentation tank are positioned on two sides of the separation type track bed, the drainage ditch is communicated with the sedimentation tank, and the sedimentation tank is communicated with the water collection tank; the board props the structure interval and sets up in catchment groove top, and board props the structure and pours the structure as an organic whole with disconnect-type railway roadbed, and the inside arrangement of reinforcement of board props the structure and the inside arrangement of reinforcement fixed connection of disconnect-type railway roadbed. Sleeper A is long sleeper, and sleeper B is short sleeper, sleeper A lays on the board props the structure, and both ends are located the disconnect-type railway roadbed, sleeper B lays on catchment groove both sides and do not have the board to prop the disconnect-type railway roadbed of structure department.

Further, an arc-shaped embedded steel plate is arranged on the inner side of the main tunnel pipe piece below the separated ballast bed and fixedly connected with reinforcing bars in the main tunnel pipe piece through anchoring bars.

Furthermore, the drainage ditch is located the both sides outside end of disconnect-type railway roadbed, a lateral wall of drainage ditch is formed by the intrados of the concrete section of jurisdiction that constitutes the tunnel, and is equipped with the prevention of seepage water barrier on this intrados.

Furthermore, the sedimentation tank is formed by the drainage ditch is locally widened to one side of the vertical central line of the cross section of the tunnel and deepened towards the bottom direction of the tunnel, one side wall of the sedimentation tank is formed by an inner arc surface of a concrete pipe piece forming the tunnel, and an impermeable water-resisting layer is arranged on the inner arc surface.

Furthermore, a communicating pipe is pre-buried inside the separated ballast bed and between the sedimentation tank and the water collection tank; the upper end of the communicating pipe is connected with the sedimentation tank, a filter screen is arranged at a water inlet of the communicating pipe, and the communicating pipe is communicated with the water collection tank in a downward inclined mode.

Furthermore, the inner arc surface of the main tunnel segment and the side wall of the side, close to the central line of the tunnel, of the separated ballast beds on the two sides form the bottom and the side wall of the water collecting tank, and an impermeable water-proof layer is arranged on the inner arc surface of the main tunnel segment forming the bottom of the water collecting tank.

Furthermore, water-swellable sealant is arranged in gaps between the side wall and the end wall of the water collection groove and the inner arc surface of the main tunnel segment, so that water accumulated in the water collection groove is prevented from permeating; the side end face and the bottom face of the water collecting groove are also provided with impermeable water-proof layers, so that the strength of concrete and the penetration and corrosion of the pipe piece caused by accumulated water are prevented.

Further, the pre-buried steel sheet of installation on the main tunnel section of jurisdiction of suction pump is prefabricated steel sheet that has the pit, and the pit gathers water the pit as the suction pump, and carries out strict rust protection, the mouth that absorbs water of suction pump is installed in the suction pump gathers water the pit.

Furthermore, a steel cover plate is covered above the water collecting tank, the steel cover plate is positioned between two adjacent plate support structures and at two ends of the water collecting tank, and the top of the water collecting tank is shielded by the steel cover plate and the plate support structures to form a hidden tank. The steel cover plate can be conveniently opened and is used as an opening for cleaning a water collecting tank and an opening for installing and maintaining a water suction pump.

Furthermore, a steel cover plate is arranged above the water suction pump, and a water outlet pipe mounting hole is reserved in the steel cover plate above the water suction pump, so that the water outlet pipe can be conveniently mounted.

Compared with the prior art, the utility model has the beneficial effects that:

1. the ballast bed tops of catchment groove both sides are passed through the board and are propped the structural connection, and the two arrangement of reinforcement fixed connection to the shaping is pour to an organic whole, thereby has strengthened ballast bed bulk strength, and the board props the structure and provides the installation basis for long sleeper, has guaranteed the stability and the security of vehicle operation in the tunnel.

2. The inboard of main tunnel section of jurisdiction of disconnect-type railway roadbed below is equipped with the pre-buried steel sheet of arc, has increased the bearing strength of tunnel section of jurisdiction, has further guaranteed the stability and the security of vehicle operation in the tunnel, and simultaneously, main tunnel section of jurisdiction can be at mill batch production to reduce the complexity of construction, it is more convenient to be under construction, the efficiency of construction is high, the expense is low.

3. The drainage ditch is arranged at the two outer side ends of the separated track bed, and the intrados of the concrete segment of the tunnel is used as one side wall of the drainage ditch, so that the erection of templates can be reduced in construction, and the construction is time-saving, labor-saving and cost-saving.

4. Set up the suction pump in catchment groove, and set up the suction pump at the pre-buried steel sheet that sets up suction pump department and gather water hole, at the inside pre-buried communicating pipe of ballast bed, introduce catchment groove through communicating pipe with the waste water in the sedimentation tank, gather suction pump and gather water hole, avoided setting up the drainage pump room alone in tunnel contact passageway position, reduced the influence of drainage pump room construction to the environment, improved construction safety and efficiency of construction, reduced construction cost.

The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clearly understood, the present invention may be implemented according to the content of the description, and in order to make the above and other objects, features, and advantages of the present invention more clearly understood, the present invention will be further described in detail with reference to the accompanying drawings and the embodiments, and it is apparent that the described embodiments are some, but not all embodiments of the present invention.

Drawings

FIG. 1 is a schematic plan view of a drainage system of a subway interval tunnel according to the present invention;

FIG. 2 is a schematic cross-sectional view of a drainage system structure of a subway interval tunnel at a slab support structure according to the present invention;

FIG. 3 is a schematic cross-sectional view of the drainage system structure of the metro interval tunnel at the position of a steel cover plate according to the present invention;

fig. 4 is an enlarged view of a portion a of fig. 3.

The parts are indicated by reference numerals:

1. a separated track bed, 2. a catchment groove, 3. a sleeper A,

4. Sleeper B, 5 slab supporting structure, 6 steel cover plate,

7. A water pump, 8 drainage ditches, 9 sedimentation tanks,

10. A communicating pipe, 11 concrete segments, 12 main tunnel segments,

13. Pre-buried steel plate, 14 anchoring ribs, 15 impermeable water-resisting layer,

16. The water-swelling sealant 17, the mounting bracket 18 and the water pump water collecting pit 18.

Detailed Description

A drainage system structure of a tunnel between subway sections is shown in figures 1-4 and comprises a separated type track bed 1, a water collection tank 2, a sleeper A3, a sleeper B4, a plate support structure 5, a steel cover plate 6, at least two water pumps 7, a drainage ditch 8, a sedimentation tank 9, a communication pipe 10 and a concrete pipe piece 11. The separated track beds 1 are located at the bottom in the tunnel, the water collecting tank 2 is located between the separated track beds 1 on the two sides, and the water suction pump 7 is installed in the water collecting tank 2. The drainage ditch 8 and the sedimentation tank 9 are both arranged at two sides of the separated track bed 1, the drainage ditch 8 is communicated with the sedimentation tank 9, and the sedimentation tank 9 is communicated with the water collection tank 2. Sewage in the drainage ditch 8 enters the sedimentation tank 9 and flows into the water collection tank 2 and is pumped away by the water suction pump 7, and the plate support structure 5 is arranged above the water collection tank 2 and is used for connecting the separated type track beds 1 on the two sides of the water collection tank 2.

The main tunnel segment 12 below the separating track bed 1 is made of special segments, and is different from the general concrete segment 11 above: this main tunnel pipe 12 intrados adopts the form of pre-buried steel sheet 13, and pre-buried steel sheet 13 passes through the arrangement of reinforcement fixed connection in anchor muscle 14 and the main tunnel section of jurisdiction 12, and main tunnel section of jurisdiction 12 and concrete segment 11 all can be prefabricated in batches at the mill. The pre-buried steel plate 13 on the main tunnel segment 12 provided with the water suction pump 7 is a prefabricated steel plate with a pit, and the pit is used as a water suction pump water collecting pit 72. The main tunnel segment 12 with the water collection pit 72 of the suction pump is arranged at the deepest position of the water collection tank 2, and the water collection pit 72 of the suction pump needs to be subjected to strict rust prevention treatment and is used for collecting water in the water collection tank 2.

The board props 5 intervals and sets up in catchment groove 2 tops, and board props structure 5 and disconnect-type railway roadbed 1 pouring structure as an organic whole, and the inside arrangement of reinforcement of board props structure 5 and the inside arrangement of reinforcement fixed connection of disconnect-type railway roadbed 1 (the two arrangement of reinforcement fixed connection here should be understood as including the inside arrangement of reinforcement of board props structure 5 as the local extension section of disconnect-type railway roadbed arrangement of reinforcement). The sleeper A3 is a long sleeper, the sleeper B4 is a short sleeper, and the sleeper A3 and the sleeper B4 are both laid at intervals along the length direction of the water catchment channel 2. The sleeper A3 is laid on the slab bracing structure 5, two ends of the sleeper A3 are fixed on the separate type track bed 2 at two sides, and the sleeper B4 is laid on the separate type track bed 1 at two sides of the water collecting tank 2 and without the slab bracing structure 5.

The drainage ditches 8 are positioned at the two outer side ends of the separated type track bed 1, and the sedimentation tank 9 is formed by locally widening the drainage ditches 8 towards one side of the vertical central line of the cross section of the tunnel and deepening towards the bottom of the tunnel. One side wall of each of the drainage ditch 8 and the sedimentation tank 9 is formed by an inner arc surface of a concrete pipe piece 11 forming the tunnel, and an impermeable water-resisting layer 15 is arranged on the inner arc surface. The separated type track bed 1 is internally embedded with a communicating pipe 10 between the sedimentation tank 9 and the water collection tank 2, the upper end of the communicating pipe 10 is connected with the sedimentation tank 9, a filter screen is installed at the water inlet of the communicating pipe, the height of the water inlet is lower than that of the bottom of the drainage ditch 8, and the communicating pipe 10 is communicated with the water collection tank 2 in a downward inclined mode.

The bottom and the side wall of the water collecting groove 2 are respectively formed by an inner arc surface of a main tunnel segment 12 and the side wall of the two side separated ballast beds 1 close to the center line of the tunnel, and an impermeable water-stop layer 15 is also arranged on the inner arc surface of the main tunnel segment 12 forming the bottom of the water collecting groove 2. And a water-swelling sealant 16 is arranged in a gap between the side wall of the water collection groove 2 and the inner arc surface of the main tunnel segment 12, so that water accumulation in the water collection groove 2 is prevented from permeating. The side and the bottom of the water collecting tank 2 are also provided with impermeable and waterproof layers 15 to prevent the seeper from permeating and corroding the concrete strength and the pipe piece. The prefabricated steel cover plate 6 is covered above the water collection tank 2, the steel cover plate 6 is covered between the two adjacent plate support structures 5 and at two ends of the water collection tank 2, and the top of the water collection tank is shielded by the steel cover plate 6 and the plate support structures 5 to form a hidden tank.

The suction pump 7 is installed on a main tunnel segment 12 with a suction pump water collecting pit 18 through an installation support 17, a water suction port of the suction pump 7 is installed in the suction pump water collecting pit 18, and the top of the water collecting tank 2 at the position is movably covered by a steel cover plate 6 and can be conveniently opened to serve as an opening for cleaning the water collecting tank 2 and an opening for installing and maintaining the suction pump 7. And a water outlet pipe mounting hole is reserved on the steel cover plate 6, so that the water outlet pipe 19 can be conveniently mounted.

The drainage system structure of the subway interval tunnel is simple, convenient and quick to construct, good in safety performance and low in construction cost.

The present invention is not limited to the above-described embodiments, and various modifications made without inventive changes from the above-described concepts will be within the scope of the present invention as defined by the appended claims.

Claims

1. A drainage system structure of a tunnel between subway sections comprises a separated track bed, a water collection tank, a sleeper A, a sleeper B, a plate support structure, a steel cover plate, at least two water pumps, a drainage ditch, a sedimentation tank, a communication pipe and concrete pipe pieces; the separated ballast beds are positioned at the bottom in the tunnel, the water collection tank is positioned between the separated ballast beds on two sides, and the water suction pump is arranged in the water collection tank through the mounting bracket; the drainage ditch and the sedimentation tank are positioned on two sides of the separated track bed, the drainage ditch is communicated with the sedimentation tank, and the sedimentation tank is communicated with the water collection tank; the method is characterized in that: the board props the structure interval and sets up in catchment groove top, and board props the structure and pours the structure as an organic whole with disconnect-type railway roadbed, and the inside arrangement of reinforcement of board props the structure and the inside arrangement of reinforcement fixed connection of disconnect-type railway roadbed.

2. The drainage system structure of the inter-subway tunnel according to claim 1, wherein: the inner side of the main tunnel pipe piece below the separated ballast bed is provided with an arc-shaped embedded steel plate, and the embedded steel plate is fixedly connected with the reinforcing bars in the main tunnel pipe piece through anchoring bars.

3. The drainage system structure of a tunnel between railroads according to claim 1, wherein: the drainage ditch is located two outside ends of disconnect-type railway roadbed, a lateral wall of drainage ditch is formed by the intrados of the concrete section of jurisdiction that constitutes the tunnel, and is equipped with the prevention of seepage water barrier on this intrados.

4. The drainage system structure of the inter-subway tunnel according to claim 1, wherein: the sedimentation tank is formed by locally widening the drainage ditch to one side of the vertical central line of the cross section of the tunnel and deepening the drainage ditch to the bottom direction of the tunnel, one side wall of the sedimentation tank is formed by an inner arc surface of a concrete pipe piece forming the tunnel, and an impermeable water-proof layer is arranged on the inner arc surface.

5. The drainage system structure of the inter-subway tunnel according to claim 1, wherein: a communicating pipe is pre-buried in the separated ballast bed and between the sedimentation tank and the water collection tank; the upper end of the communicating pipe is connected with the sedimentation tank, a filter screen is arranged at a water inlet of the communicating pipe, and the communicating pipe is communicated with the water collection tank in a downward inclined mode.

6. The drainage system structure of the inter-subway tunnel according to claim 2, wherein: the inner arc surface of the main tunnel segment and the side wall of the side, close to the central line of the tunnel, of the separated ballast beds on the two sides form the bottom and the side wall of the water collecting groove, and an impermeable water-proof layer is arranged on the inner arc surface of the main tunnel segment forming the bottom of the water collecting groove.

7. The drainage system structure for the inter-subway tunnel according to claim 6, wherein: a water-swelling sealant is arranged in a gap between the side wall of the water collecting groove and the inner cambered surface of the main tunnel segment; the side end face and the bottom face of the water collecting groove are also provided with impermeable and waterproof layers.

8. The drainage system structure of the inter-subway tunnel according to claim 2, wherein: the installation pre-buried steel sheet on the main tunnel section of jurisdiction of suction pump is prefabricated steel sheet that has the pit, and the pit gathers water pit as the suction pump, and carries out strict rust-resistant processing, the water sucking mouth of suction pump is installed in the suction pump gathers water pit.

9. The drainage system structure of a metro area tunnel according to any one of claims 1 to 8, wherein: the upper part of the water collecting tank is covered with a steel cover plate, the steel cover plate is positioned between two adjacent plate support structures and at two ends of the water collecting tank, and the top of the water collecting tank is shielded by the steel cover plate and the plate support structures to form a hidden tank; the steel cover plate can be conveniently opened and is used as an opening for cleaning a water collecting groove and an opening for installing and maintaining a water suction pump.

10. The drainage system structure for the inter-subway tunnel according to claim 9, wherein: the water suction pump is characterized in that a steel cover plate is arranged above the water suction pump, and a water outlet pipe mounting hole is reserved in the steel cover plate above the water suction pump.