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Non-Newtonian fluid lining support structure and construction method

A non-Newtonian fluid and supporting structure technology, applied in wellbore lining, tunnel lining, earth-moving drilling, etc., can solve the problems of uneven stress and poor supporting capacity of the secondary lining steel arch, and achieve easy heating and bonding. , the effect of avoiding waste and saving resources

Active Publication Date: 2019-08-06
CHINA THREE GORGES UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a non-Newtonian fluid lining support structure and construction method, which can solve the problems of uneven stress and poor support capacity of the second lining steel arch frame, and reduce the impact of surrounding rock on the second lining structure. The point force or line force is homogenized into surface force and distributed evenly on the secondary lining structure, which improves the utilization rate of the secondary lining structure, reduces the cost of steel, etc.; improves safety

Method used

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  • Non-Newtonian fluid lining support structure and construction method
  • Non-Newtonian fluid lining support structure and construction method

Examples

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Embodiment 1

[0036] Such as Figure 1-Figure 3 As shown, a non-Newtonian fluid lining support structure includes a primary tunnel lining 3 formed by inserting bolts, hanging nets, and shotcrete on the surrounding rock 2 of a tunnel 1. The outer surface of the primary lining 3 of the tunnel is provided with two tunnels. The secondary lining body 4, a certain space is provided between the tunnel primary lining body 3 and the tunnel secondary lining body 4 to form a reserved deformation layer 5, and a non-Newtonian fluid filling 7 is placed in the reserved deformation layer 5; a non-Newtonian fluid filling material 7 includes a fully enclosed bag body 10 filled with non-Newtonian fluid. The outer side of the fully enclosed bag body 10 corresponding to the surrounding rock 2 is provided with a rubber valve 16, and the rubber valve 16 is provided with a water injection hole 13 and pressure relief / grouting Hole 14, non-Newtonian fluid filling 7 is embedded with a first main water injection pipe 1...

Embodiment 2

[0050] A construction method of the above supporting structure, the method includes the following steps:

[0051] Step 1: The polyethylene geomembrane is made into a bag shape by hot pressing to obtain a closed bag body 10. A rubber valve 16 is arranged on one side of the closed bag body 10, and the first main water injection pipe 17 and the second main water injection pipe 9 are connected through the water injection hole. And the arched water injection pipe 18 is placed inside the closed bag 10, the detection end of the moisture content detector 15 is placed inside the closed bag 10 through the water injection hole, and the pressure relief / grouting hole 14 is connected to the grouting / relieving pressure Pipe, inject non-Newtonian fluid into the closed bag body 10 through the grouting / pressure relief pipe, and stop the injection when the reserved deformation layer 5 is filled;

[0052] Step 2: Wrap the geotextile 11 and the wire mesh 12 outside the fully enclosed bag body 10 to pre...

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Abstract

The invention relates to a non-Newtonian fluid lining support structure. The non-Newtonian fluid lining support structure comprises a tunnel primary lining body, a reserved deformation layer formed bya certain space is arranged between the tunnel primary lining body and a tunnel secondary lining body, and a non-Newtonian fluid filling material is placed in the reserved deformation layer; the non-Newtonian fluid filling material comprises a fully-enclosed bag body filled with non-Newtonian fluid inside; a rubber valve is provided with a water injection hole and a pressure relief / grouting hole,a second water injection hole is further formed in the outer side surface, corresponding to the wall rock, of the enclosed bag body, the second water injection hole communicates with a second main water injection pipe embedded in the non-Newtonian fluid of the non-Newtonian fluid filling material, and the second main water injection pipe is connected with arc-shaped sub water injection pipes at intervals. According to the Non-Newtonian fluid lining support structure and a construction method, the problems that stress of a secondary lining steel arc frame is not uniform, and the supporting ability is poor are solved, point force or line force of the wall rock on the secondary lining structure is transformed to surface force, and the using ratio of the secondary structure is improved.

Description

Technical field [0001] The invention relates to the technical field of underground engineering construction, in particular to a non-Newtonian fluid lining supporting structure and a construction method. Background technique [0002] In recent years, with the rapid development of my country’s national economy, rapid progress has been made in the construction of expressways and national highways as the main body of the rapid transportation network. As an important part of expressways, mountain highway tunnels are increasingly focusing on environmental protection, Economy and efficiency play an increasingly prominent role today. At the same time, with the gradual reduction of ground space, the development and utilization of underground space has gradually increased. However, due to the diversity and complexity of the geological and engineering conditions in which the tunnel is located, for some soft rock areas under high ground stress, large or partial deformations often occur durin...

Claims

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Application Information

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IPC IPC(8): E21D11/10E21D11/18
CPCE21D11/105E21D11/107E21D11/18
Inventor 高素芳刘杰孙涛黎照谢晓康罗越文李洪亚唐洪宇刘文李运舟石谦杜卓兴
Owner CHINA THREE GORGES UNIV
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