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

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...

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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

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