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Tunnel storage drainage decompression structure and tunnel structure spanning soft rock section

A drainage decompression and tunnel technology, which is applied in drainage, tunnel, tunnel lining, etc., can solve problems such as tunnel bottom structure damage, achieve the effects of reducing overall weight, convenient construction, and ensuring stability

Pending Publication Date: 2019-03-26
SICHUAN DEPT OF TRANSPORTATION HIGHWAY PLANNING PROSPECTING & DESIGN RES INST
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  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to provide a tunnel storage and drainage decompression structure and its tunnel structure spanning soft rock sections to effectively solve the problem of tunnel bottom structure damage caused by soft rock section tunnel settlement and untimely groundwater conduction and drainage, and ensure the safety of the tunnel. normal performance

Method used

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  • Tunnel storage drainage decompression structure and tunnel structure spanning soft rock section
  • Tunnel storage drainage decompression structure and tunnel structure spanning soft rock section
  • Tunnel storage drainage decompression structure and tunnel structure spanning soft rock section

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Embodiment Construction

[0028] Below in conjunction with accompanying drawing and embodiment the present invention is described further as follows:

[0029] Tunnel storage and drainage decompression structure, such as Figure 5 and Figure 6 As shown, the arch wall 14 and the tunnel bottom structure are included along the tunnel ring direction. The arch wall 14 includes the outer primary support 141 and the inner secondary lining 142 along the tunnel radial direction; the tunnel bottom structure includes The joist 7 at the bottom of the secondary lining 142 of 14 and the tunnel bottom box 2 arranged between the joists 7 on both sides; the joist 7 and the tunnel bottom box 2 are split structures; the joist 7 The top is connected to the bottom of the secondary lining 142 as the load-bearing foundation of the secondary lining 142; the two sides of the tunnel bottom box 2 are anchored to the surrounding rocks on both sides of the arch wall 14, which is a hollow structure, including the bottom wall 21, ...

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Abstract

The invention relates to a tunnel storage drainage decompression structure and a tunnel structure spanning the soft rock section, and belongs to the field of tunnel structures to solve the problem oftunnel bottom structure failure caused by tunnel settlement in the soft rock section and late groundwater drainage. Joists as a bearing foundation for a secondary lining of an arch wall and a tunnel bottom box between the joists on both sides are arranged at the bottom of the tunnel arch wall. The joists and the tunnel bottom box are of a split structure. Two sides of the tunnel box body are anchored on surrounding rock on two sides of the arch wall, the box is of a hollow structure, and a storage drainage chamber is defined by a bottom wall, a top wall, side walls and end walls. Water guide ports communicated with the storage drainage chamber are arranged at two ends, and a vertical water guiding hole penetrating the bottom wall is formed at the bottom wall of the tunnel bottom body. Theconstruction of the tunnel bottom is facilitated by setting the tunnel bottom box and the joists, and the settlement of the tunnel bottom box and a tunnel is avoided. A certain water storage functionis achieved to alleviate the drainage pressure of a central drainage ditch and avoid tunnel water leakage and the like caused by groundwater drainage abnormality.

Description

technical field [0001] The invention belongs to the field of tunnel structures, in particular to a tunnel structure for storage, drainage and decompression and a tunnel structure spanning soft rock sections. Background technique [0002] With the rapid development of my country's transportation industry, the area where tunnels are built is getting wider and wider, and the tunnels are getting longer and longer. The tunnel passes through a wide mountain range, and the geological conditions are extremely complex. It is inevitable to encounter rock fractures and broken areas, karst and karst water development areas, groundwater development areas, and soft rock areas that are closely connected with the outside world. Because these soft rock areas are rich in water , uneven distribution, erosive and motile. When the tunnel is built in this area, sometimes the main source of groundwater cannot be completely and accurately identified, but a large amount of groundwater accumulates i...

Claims

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Application Information

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IPC IPC(8): E21D9/14E21D11/00E21F16/02
CPCE21D9/14E21D11/00E21D11/003E21F16/02
Inventor 李泳伸林国进郑金龙王联田志宇张兆杰李海清李晓洪孙振
Owner SICHUAN DEPT OF TRANSPORTATION HIGHWAY PLANNING PROSPECTING & DESIGN RES INST
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