CN217897962U

CN217897962U - Urban tunnel ventilation shaft drainage system

Info

Publication number: CN217897962U
Application number: CN202221954322.6U
Authority: CN
Inventors: 钟继凯; 蒋文勇; 梅江涛; 刘春雨; 杨光旭
Original assignee: Third Construction Co Ltd of China Construction Eighth Engineering Divison Co Ltd
Current assignee: Third Construction Co Ltd of China Construction Eighth Engineering Divison Co Ltd
Priority date: 2022-07-27
Filing date: 2022-07-27
Publication date: 2022-11-25
Anticipated expiration: 2032-07-27

Abstract

The utility model provides an urban tunnel ventilation shaft drainage system, includes the vertical shaft of perpendicular setting, the shaft bottom of shaft is provided with the fan room, fan room and tunnel intercommunication, its characterized in that: the wall of a well four corners department of shaft is provided with the pipe in the water, and the bottom of shaft is provided with the ditch all around for collect the water that the pipe in the water was arranged down, be provided with a plurality of rings on the vertical direction of shaft on the shaft along the shaft and permeate water the blind pipe, one side that the shaft bottom is located the fan room is provided with the sump pit, the sump pit discharges ponding into the drainage system in the tunnel through the pre-buried drain pipe in below, the utility model discloses can reduce infiltration in the tunnel, guarantee structure safety, rain sewage can organize the drainage in the shaft, reduces the erosion to reinforced concrete, and is better to the structure durability, reduces wind well room cost of maintenance simultaneously.

Description

Urban tunnel ventilation shaft drainage system

Technical Field

The utility model relates to a construction field especially relates to a city tunnel ventilation shaft drainage system.

Background

The tunnel ventilation shaft is a ventilation channel vertically dug downwards on the ground and is connected with a fan room on the inner side wall of the tunnel. Because the ground construction influences in the urban tunnel, most machines can not enter the field, and only artificial water drill excavation can be adopted, after the excavation reaches the fan room elevation, a reinforced concrete structure is implemented, meanwhile, because the depth of the vertical shaft is deep, cracks exist on the wall rock layer of the vertical shaft in the excavation process, partial water seepage is more, a drainage measure is basically not arranged in the vertical shaft, and the vertical shaft flows downstream to the bottom of the vertical shaft from the wall of the vertical shaft and is discharged to a municipal pipe network from drainage ditches at two sides of the tunnel. According to the technology, rainwater is scattered and discharged for a long time, the wall of the ventilation shaft well is wet for a long time, the structural strength is influenced, meanwhile, in heavy rain weather, water is easily accumulated in the ventilation shaft, the loss of the equipment in the fan house is large, and the long-term operation of the tunnel is not facilitated.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to prior art not enough, provide a city tunnel ventilation shaft drainage system, including the vertical shaft that sets up, the shaft bottom of shaft is provided with the fan room, fan room and tunnel intercommunication, its characterized in that: the drainage system is characterized in that water pipes are arranged at four corners of the wall of the vertical shaft, ditches are arranged around the bottom of the vertical shaft and used for collecting water discharged from the water pipes, a plurality of annular water permeable blind pipes are arranged on the vertical direction of the vertical shaft, a water collecting pit is arranged on one side, located in a fan room, of the bottom of the vertical shaft, and accumulated water is discharged into the drainage system in the tunnel through a lower embedded drainage pipe.

Preferably, the bottom of the vertical shaft is fully wrapped with a composite waterproof plate.

Preferably, the width of the gutter is 3cm.

Preferably, the circumferential water-permeable blind pipes are uniformly distributed in the vertical direction, and the distance between every two adjacent circumferential water-permeable blind pipes is 2m.

Preferably, the vertical shaft is provided with a reverse slope with gradually reduced height from the well head to the outside at the well head, and the slope rate of the reverse slope is 1.5%.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses can reduce infiltration in the tunnel, guarantee structure safety, rain sewage can organize the drainage in the shaft, reduces the erosion to reinforced concrete, and is better to the structure durability, reduces wind well house cost of maintenance simultaneously.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:

FIG. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic diagram of a shaft top view structure;

fig. 3 is a schematic diagram of a front view structure of the shaft;

fig. 4 is a schematic view of the bottom structure of a vertical shaft.

In the figure: 1. the water-saving drainage system comprises a vertical shaft, 2 a downpipe, 3 a ditch, 4 a circumferential water-permeable blind pipe, 5 a water collecting pit, 6 a pre-buried drainage pipe, 7 a reverse slope, 8 and a composite waterproof board.

Detailed Description

The technical solution of the present invention is described in detail below with reference to the accompanying drawings, but the scope of the present invention is not limited to the embodiments.

Referring to fig. 1 to 4, a ventilation shaft drainage system for urban tunnels comprises a vertically arranged shaft 1, a fan room is arranged at the bottom of the shaft 1, the fan room is communicated with the tunnel, four corners of the wall of the shaft 1 are provided with water falling pipes 2, the water falling pipes 2 are phi 50 water-permeable blind pipes and are used for absorbing accumulated water on the wall of the shaft and reducing erosion to reinforced concrete, after the water falling pipes 2 are saturated in absorption, water ditches 3 are arranged around the bottom of the shaft 1, the width of each water ditch 3 is 3cm and are used for collecting the water discharged from the water falling pipes 2, a plurality of annular water-permeable blind pipes 4 are arranged on the shaft 1 in the vertical direction of the shaft 1, the diameters of the annular water-permeable blind pipes 4 are phi 50, the annular water-permeable blind pipes 4 have the same functions as the water falling pipes 2 step by step, the accumulated water on the wall of the fan room is absorbed, rainwater and the humidity of the tunnel is reduced, the loss of facilities in the wind well room is reduced, so that the maintenance cost of the wind well room is reduced, a water collection well 1 is provided with a water collecting pit 5 on one side of the shaft of the fan room, the bottom of the shaft 1 is provided with a water collecting pit 5, the water collecting pit 5 which can prevent the accumulated water from entering the fan room from the bottom of the fan room, effectively protects the water collecting pit, and the water collecting pit and the fan room, and the water collecting pit when the water collecting system passes through a certain degree of the water collecting pit 6.

The bottom of the vertical shaft 1 is fully covered with a composite waterproof board 8 to separate the well wall from the reinforced concrete structure and prevent water seepage.

Secondly, the blind pipe 4 that permeates water of hoop is evenly distributed on vertical direction, and the distance between the blind pipe 4 that permeates water of adjacent hoop is 2m, and in this technical scheme, evenly distributed's the blind pipe 4 that permeates water of hoop can make adjacent hoop permeate water the blind pipe 4 water absorption capacity the same, need not remove a certain hoop blind pipe 4 that permeates water alone when needing to be changed the blind pipe 4 that permeates water of hoop because of the saturation that absorbs water, has reduced the time and the labour cost of changing the blind pipe 4 that permeates water of hoop, needn't worry simultaneously that a certain hoop blind pipe 4 that permeates water absorbs water too much problem.

Finally, the shaft 1 is provided with a reverse slope 7 with the height gradually reduced from the shaft mouth to the outside at the shaft mouth, the slope rate of the reverse slope 7 is 1.5 percent, and the reverse slope 7 can prevent rainwater from flowing backwards, and belongs to a measure for draining water outside the shaft.

As above, while the invention has been shown and described with reference to certain preferred embodiments, it is not to be construed as limiting the invention itself. Various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. The utility model provides an urban tunnel ventilation shaft drainage system, includes the vertical shaft of perpendicular setting, the shaft bottom of shaft is provided with the fan room, fan room and tunnel intercommunication, its characterized in that: the drainage system is characterized in that water pipes are arranged at four corners of the wall of the vertical shaft, ditches are arranged around the bottom of the vertical shaft and used for collecting water discharged from the water pipes, a plurality of annular water permeable blind pipes are arranged on the vertical direction of the vertical shaft, a water collecting pit is arranged on one side, located in a fan room, of the bottom of the vertical shaft, and accumulated water is discharged into the drainage system in the tunnel through a lower embedded drainage pipe.

2. The drainage system for the ventilation shaft of the urban tunnel according to claim 1, wherein: and a composite waterproof plate is fully wrapped at the bottom of the vertical shaft.

3. The drainage system for the ventilation shaft of the urban tunnel according to claim 2, wherein: the width of the ditch is 3cm.

4. The drainage system for the ventilation shaft of the urban tunnel according to claim 1 or 3, wherein: the annular permeable blind pipes are uniformly distributed in the vertical direction, and the distance between every two adjacent annular permeable blind pipes is 2m.

5. The drainage system for the ventilation shaft of the urban tunnel according to claim 1, wherein: the vertical shaft is provided with a reverse slope with the height gradually reduced from the well mouth to the outside at the well mouth, and the slope rate of the reverse slope is 1.5%.