Dormant digging and separating construction method for underground two layers and multilayer composite lining structure

A multi-layer composite, construction method technology, applied in earthwork drilling, mining equipment, tunnels, etc., can solve the problems of slow construction, stratum disturbance, adverse structural effects, etc., to simplify the construction process, reduce construction costs, reduce The effect of ground disturbance

Inactive Publication Date: 2005-01-12
刘昌用
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Problems solved by technology

[0005] The purpose of the present invention is to solve the problem of excessive disturbance to the strata when using existing construction methods such as CD, CRD or hole pile method, the construction of underground double or multi-layer, the working face is narrow, the construction speed is slow, and the amount of abandoned engineering is large. , the demolition of the temporary system has the disadvantage of adversely affecting the structure; thus the present invention provides a submerged excavation separation construction method suitable for any geological structure with large slump and high side walls underground double-layer composite lining structure

Method used

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  • Dormant digging and separating construction method for underground two layers and multilayer composite lining structure
  • Dormant digging and separating construction method for underground two layers and multilayer composite lining structure
  • Dormant digging and separating construction method for underground two layers and multilayer composite lining structure

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Embodiment Construction

[0027] see figure 1 , using the excavation separation construction method of the present invention, the main body double-layer composite lining structure for urban subway separation stations is completed. The underground double-layer composite lining structure includes primary support shotcrete layer 1, ECB (conventional polyethylene-vinyl acetate and asphalt copolymer) or other waterproof sheet waterproof layer 2, secondary lining C30 (concrete) reinforced concrete layer 3 and partition plate 8.

[0028] The construction technique of the present embodiment comprises concrete steps as follows:

[0029] see figure 2 , use the existing shallow buried excavation technology to complete the excavation and initial support of the upper half of the structure, including the completion of the initial support through conventional precipitation, advance ground reinforcement and shotcrete existing construction technology; at the same time, strictly follow the "pipe advance, The constru...

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Abstract

This is an underground hidden digging separated working method it is double layers or multiple layers complex lining brick structure. It contains: Use the existing shallow bury hidden digging technology to finish the lining bricks structure upper parts, and use the routine technology to finish the original support and protection. After finished the original protection and support of vault part, to spread out the water-proof plate and finish the middle separated plate to use the ground model, and pouring cement slurry to make the upper part structure. Under the protected of middle separated plate, then to make the structure under the middle separated plate, to finish the whole working process finally.

Description

technical field [0001] The invention relates to an underground excavation technology for an underground double-layer composite lining structure, in particular to an underground excavation and separate construction method for an underground double-layer or multi-layer composite lining structure applicable to any geological structure. Background technique [0002] In the prior art, as a solution to the excavation of underground tunnel spaces such as urban municipal infrastructure construction, urban subways, underground parking lots, and railway highway tunnels, an underground double-layer composite lining structure is often used. The construction of this structure must ensure that the settlement of the ground is within the specified range, so the CD (middle partition) or CRD (cross-middle partition) methods are widely used at present, as well as the hole pile method (small pilot hole + piles in the hole). Divide large-area excavation into small-area excavation. [0003] Howe...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D9/00E21D9/04
Inventor 刘昌用崔玖江刘维宁俞翔
Owner 刘昌用
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