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Contact tunnel also serving as pump station structure between shield tunnels and construction method thereof

A technology for connecting passages and shield tunnels, which is applied in the construction field of underground shield tunnels, can solve problems such as unreasonable stress on the bottom plate structure, increase the depth of the bottom plate, and increase the thickness of the bottom plate, so as to reduce construction risks and avoid rigidity. The effect of destroying, optimizing thickness

Inactive Publication Date: 2012-01-18
POWERCHINA HUADONG ENG COPORATION LTD
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  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

The setting of the inverted arch enlarges the thickness of the bottom slab and increases the excavation depth of the bottom slab. It is necessary to hollow out the lower part of the shield tunnel, causing the steel pipes to hang in the air, which poses a great risk to the construction. image 3 shown
The structural type of local subsidence is as attached Figure 4 As shown, the local subsidence of the bottom plate of this structure can avoid the adverse effects of excessive excavation on the shield tunnel, but the local subsidence makes the floor structure unreasonable

Method used

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  • Contact tunnel also serving as pump station structure between shield tunnels and construction method thereof
  • Contact tunnel also serving as pump station structure between shield tunnels and construction method thereof
  • Contact tunnel also serving as pump station structure between shield tunnels and construction method thereof

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Embodiment Construction

[0037] like Figure 5 As shown, this embodiment includes a channel 2 connecting the up and down tunnel 1, the bottom of the channel is poured with a concrete floor 3, and a pit is dug in the middle of the channel for setting a sunken pump room 4, so that the upper end surface of the pump room 4 It is flush with the surface of the bottom plate 3, and a drainage pipe 5 connecting the bottom of the tunnel 1 and the pump room 4 is arranged in the rock and soil below the floor 3, and the slope i of the drainage pipe to the side of the pump room 4 is 3%; For example, the drainage pipe is completely placed outside the base plate 3, so that the acceptance of the base plate 3 is uniform and reasonable, and its thickness is not limited by the elevation of the drain pipe 5, and the thickness of the base plate 3 is optimized, thereby avoiding the impact of excavating the base plate structure too deep on the shield tunnel. adverse effects and reduce construction risks.

[0038] like Ima...

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Abstract

The invention relates to a contact tunnel also serving as a pump station structure between shield tunnels and a construction method thereof. The invention aims to provide the contact tunnel also serving as the pump station structure between the shield tunnels, which has a simple structure and is convenient to construct, and the construction method thereof, in order to optimize the structure form of the contact tunnel and reduce the danger of engineering construction. The invention adopts the technical scheme that: the contact tunnel also serving as the pump station structure between the shield tunnels comprises a passageway communicating an upper tunnel with a lower tunnel, wherein a concrete bottom plate is cast at the bottom of the passageway; a sunk pump house is arranged at the bottom of the passageway; and a discharge pipe communicating a tunnel with the pump house is arranged at the bottom of the tunnel. The contact tunnel is characterized in that the discharge pipe is arranged in rock soil below the bottom plate. The contact tunnel and the construction method are applied to the construction of the underground shield tunnels.

Description

technical field [0001] The invention relates to a communication channel and pumping station structure based on shield tunnels and a construction method thereof, which is mainly applicable to the construction of underground shield tunnels. Background technique [0002] The connecting channel and pumping station is the connecting channel connecting the uplink and downlink shield tunnels. Its main function is to ensure the disaster prevention needs of the shield tunnels during the operation period and the needs of interval drainage. At present, the construction of the communication channel and pumping station is carried out after the construction of the shield tunnel in the section is completed. During construction, the steel pipe sheet at the communication channel is removed first, and then the communication channel and pumping station are constructed by a mine-like method. The construction of the communication channel and pumping station is a risk point in shield tunnel cons...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21F16/02E21D11/00E21D11/38E21D9/14
Inventor 章天杨臧延伟许原骑吴向东章立峰卢慈荣
Owner POWERCHINA HUADONG ENG COPORATION LTD
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