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Pump room construction method and pump room construction dewatering system in tunnel communication channel

A communication channel and construction method technology, which is applied in the field of pump room construction dewatering system, can solve the problems of inconvenient excavation and construction of the pump room, and achieve the effects of small depth, low construction cost, and convenient excavation and construction

Active Publication Date: 2021-06-25
HENAN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a pump room construction method in the tunnel communication channel, which is used to solve the technical problem in the prior art that groundwater seeps to the bottom of the communication channel, which makes the excavation of the pump room inconvenient; at the same time, it provides a tunnel communication channel. The pump room construction dewatering system is used to solve the technical problem in the prior art that the groundwater seeps to the bottom of the communication channel, which leads to the inconvenience of excavation and construction of the pump room

Method used

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  • Pump room construction method and pump room construction dewatering system in tunnel communication channel
  • Pump room construction method and pump room construction dewatering system in tunnel communication channel
  • Pump room construction method and pump room construction dewatering system in tunnel communication channel

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specific Embodiment approach 1

[0054] Such as Figure 1 to Figure 8 As shown, under the ground 11, there is a grouting reinforcement area 1 reinforced by grouting method. In the grouting reinforcement area 1, there is a communication channel excavation area 2, and the ground of the communication channel excavation area 2 is the communication channel ground 3 , the pump room construction dewatering method in the tunnel communication channel, comprising the following steps:

[0055] First, determine a pump room area to be excavated on the ground 3 of the communication channel, and then make a dewatering well 4 in the area to be excavated in the pump room, such as figure 2 As shown, the dewatering well hole 41 is located in the middle of the excavation area of ​​the pump house, and the bottom of the dewatering well 4 is lower than the elevation of the bottom plate 9 of the pump house, so that the seepage water in the area to be excavated in the pump house will eventually flow into the well of the dewatering w...

Embodiment approach 2

[0061] In this embodiment, the foundation pit of the pump room is excavated before the water level in the dewatering well drops below the level of the bottom plate of the pump room by pumping water.

specific Embodiment approach 3

[0063] In this embodiment, the elevation of the upper end of the filter cartridge 5 is lower than the elevation of the ground of the communication passage. The groundwater level is 0.3m-0.5m.

[0064] Specific implementation method 1 of the pump room construction dewatering system in the tunnel communication channel:

[0065] Such as Figure 1 to Figure 4 As shown, under the ground 11, there is a grouting reinforcement area 1 reinforced by grouting method. In the grouting reinforcement area 1, there is a communication channel excavation area 2, and the ground of the communication channel excavation area 2 is the communication channel ground 3 , on the area to be excavated of the pump room on the ground 3 of the communication channel, the pump room construction dewatering system in the tunnel communication channel of the present invention includes a dewatering well 4, and its dewatering well hole 41 is located in the middle of the excavation area of ​​the pump room , the dewa...

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Abstract

The invention relates to a construction method of a pump room in a tunnel communication channel and a pump room construction dewatering system, a construction method of a pump room in a tunnel communication channel, step 1, drilling a dewatering well in the area of ​​the pump room on the ground of the communication channel to be excavated, and the construction of the dewatering well The bottom of the well is lower than the floor level of the pump house; Step 2: Put the filter cartridge in the dewatering well, the filter cartridge is used to filter the impurities in the infiltrated water to avoid blocking the water pump; Step 3: Put the water pump in the filter cartridge, and the water pump is connected to the drainage Pipes and drain pipes are used to lead the accumulated water in the dewatering well to the outside of the dewatering well; step 4, excavate the foundation pit of the pump room, so that the infiltrated water in the area to be excavated in the pump room can be discharged out of the well, and then excavate the foundation pit of the pump room When the infiltration water has been drawn out of the dewatering well or is being drawn out of the dewatering well, it can facilitate the excavation and construction of the pump room.

Description

technical field [0001] The invention relates to a pump room construction method and a pump room construction dewatering system in a tunnel communication channel. Background technique [0002] With the development of urban rail transit, it may encounter the problem of building urban underground tunnels in various complex strata, among which the construction of urban tunnels in highly permeable sand and pebble strata will inevitably be affected by groundwater. For the treatment of groundwater during the construction of tunnel communication channels, grouting, freezing, and precipitation methods are often used. For the sand and pebble layer, the freezing method is used less because of the high cost; the precipitation method requires a large precipitation area and a large water level drop, and may cause the loss of fine particles in the pebbles and cause subsidence. Therefore, the grouting method is often used in this kind of soil layer, and the sleeve valve pipe is used to inj...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21F16/02E21D11/10F04D29/70
CPCE21D11/10E21F16/02F04D29/708
Inventor 李达高笑娟马建军王超圣井景凤周立波康跃进雷居强王满付燎原吴婷婷刘家宇周胜男付敬卓
Owner HENAN UNIV OF SCI & TECH
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