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Non-Newtonian Fluid Lining Support Structure and Construction Method

A non-Newtonian fluid and support structure technology, which is applied in wellbore lining, tunnel lining, earthwork drilling and mining, etc., can solve the problems of uneven stress and poor support capacity of the second lining steel arch frame, and achieve easy heating and bonding , avoid waste, reduce the effect of internal stress

Active Publication Date: 2021-02-19
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
  • Non-Newtonian Fluid Lining Support Structure and Construction Method

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Embodiment 1

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

Embodiment 2

[0050] A construction method of the above-mentioned support structure, the method comprises the following steps:

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

[0052] Step 2: Wrap the geotextile 11 and the barbed wire 12 on the outside of the fully enclose...

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Abstract

A non-Newtonian fluid lining support structure, comprising a tunnel primary lining body, a certain space is arranged between the tunnel primary lining body and the tunnel secondary lining body to form a reserved deformation layer, and a non-Newtonian fluid filling is placed in the reserved deformation layer The non-Newtonian fluid filling includes a fully-enclosed bag filled with non-Newtonian fluid. The rubber valve is provided with a water injection hole and a pressure relief / grouting hole. The outer surface of the closed bag corresponding to the surrounding rock is also provided with a second The water injection hole, the second water injection hole communicates with the second main water injection pipe buried in the non-Newtonian fluid inside the non-Newtonian fluid filling, and the second main water injection pipe is connected with arched water injection pipes at intervals. The non-Newtonian fluid lining support structure and construction method provided by the invention can solve the problems of uneven stress and poor support capacity of the second lining steel arch frame, and can evenly apply the point force or linear force applied by the surrounding rock to the second lining structure. Turned into surface force, the utilization rate of the second lining 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 support structure and a construction method. Background technique [0002] In recent years, with the rapid development of my country's national economy, the construction of expressway and national highway as the main body of the rapid transportation network has made rapid progress. 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, overall or local large deformations often occur during or after construction, which increases the need for lining Difficulty of support. [0003] At present, the method o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
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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