Adjustable magnetic force gate type fluid lining surrounding rock pressure relief device and construction method

A pressure relief device and fluid mass technology, applied in valve device, wellbore lining, tunnel lining and other directions, can solve the problems of high construction cost of high ground stress soft rock tunnel, uneven support structure stress, uneven ground stress and other problems , to achieve the effect of simple structure, detachable operation and convenient operation

Active Publication Date: 2020-10-16
CHINA THREE GORGES UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In view of the defects existing in the prior art, the object of the present invention is to provide a door-type fluid lining surrounding rock pressure relief device with adjustable magnetic force and a construction method, which can significantly solve the problem of large soft rock creep in the existing surrounding rock tunnel engineering. , Long deformation time, resulting in long construction period, significant inhomogeneity of ground stress, resulting in extremely uneven stress on the support structure; high cost of construction in soft rock tunnels with high ground stress, greatly improving work efficiency, and accurately controlling the degree of release and The scope and structure are simple, the materials are easy to obtain, easy to operate, fast construction, and greatly save the test cost cycle

Method used

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  • Adjustable magnetic force gate type fluid lining surrounding rock pressure relief device and construction method
  • Adjustable magnetic force gate type fluid lining surrounding rock pressure relief device and construction method
  • Adjustable magnetic force gate type fluid lining surrounding rock pressure relief device and construction method

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Effect test

Embodiment 1

[0037] Such as Figure 1-6As shown, the door-type fluid lining surrounding rock pressure relief device with adjustable magnetic force includes a tunnel lining 16, and the inner side wall of the tunnel lining 16 is anchored with a channel steel 2 through an initial lining bolt 15, and the channel steel 2 and The tunnel lining 16 is filled with fluid fillers 1, and the channel steel 2 is provided with a plurality of fluid outlet holes 3 at different positions, and the position of the fluid outlet holes 3 is equipped with a The stress of 1 is self-feedback pressure relief valve 6. By adopting the above-mentioned surrounding rock pressure relief device, the fluid filling material 1 acts on the secondary lining in advance to reduce the load generated by the stress deformation of the surrounding rock to reduce the amount of creep deformation and shorten the deformation stabilization period. When the surrounding rock pressure increases, the stress self-feedback pressure relief valve...

Embodiment 2

[0046] The construction method of any one of the adjustable magnetic door type fluid lining surrounding rock pressure relief device, it includes the following steps:

[0047] Step1, material preparation: sand, gravel, cystic substance, channel steel, steel sheet, electromagnet, energized coil wire, hinge, controller, pressure sensor;

[0048] Step2: The manufacturing mechanism of the grouting hole 14 on the channel steel 2 and the fluid release hole 3: the grouting hole 14 on the channel steel 2 is manually opened and closed by plugging, and the fluid release hole 3 on the channel steel 2 is not In the working state, due to the opposite sex attraction of the electromagnetic locking device, it is in the closed state. In the working state, due to the current control of the energized coil, the suction and repulsion between the electromagnetic locking device is controlled to control the closing and opening of the door electromagnet;

[0049] Step3: Fixing of the channel steel 2: T...

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Abstract

The invention discloses a door-type fluid lining surrounding rock pressure relief device with adjustable magnetic force and a construction method. The adjustable magnetic force door type fluid lining surrounding rock pressure relief device includes a tunnel lining. The lining anchor rod is anchored with channel steel, and the channel steel and the tunnel lining are filled with fluid fillers. Multiple fluid discharge holes are arranged at different positions of the channel steel, and the positions of the fluid discharge holes are installed with The stress self-feedback pressure relief valve that automatically opens and discharges the fluid filling. It can significantly solve the problem of large creep and long deformation time of soft rock in existing surrounding rock tunnel engineering, resulting in long construction period, significant inhomogeneity of ground stress, and extremely uneven stress on support structures; the construction of soft rock tunnels with high ground stress High cost and other issues, greatly improve work efficiency, precisely control the degree and scope of leakage, simple structure, easy to obtain materials, easy to operate, fast construction, and greatly save the test cost cycle.

Description

technical field [0001] The invention relates to the technical field of lining surrounding rock construction, in particular to a door-type fluid lining surrounding rock pressure relief device with adjustable magnetic force and a construction method, which is suitable for research in fields such as engineering tunnels, engineering roadways, and mining cavern support. Background technique [0002] The following problems exist in deep high-in-situ stress schist caverns: (1) The creep of soft rock is large and the deformation time is long, resulting in a long construction period; the displacement convergence time of high-in-situ stress soft rock tunnels can be as long as 3 years, and the displacement is large; ( 2) The inhomogeneity of the ground stress is significant, resulting in extremely uneven stress on the support structure; because the ground stress of the soft rock tunnel varies with the direction, the stress distribution of the surrounding rock after the excavation of the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21D11/00E21D11/10F16K17/02F16K17/164
CPCE21D11/00E21D11/105F16K17/02F16K17/164
Inventor 刘杰高素芳胡英谢晓康黎照孙涛兰俊卢获
Owner CHINA THREE GORGES UNIV
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