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Tunnel lining supporting structure indoor model test method

A support structure and test method technology, applied in the direction of applying stable tension/pressure to test material strength, measuring devices, instruments, etc., can solve problems such as strong uneven confining pressure

Inactive Publication Date: 2016-07-27
ANHUI UNIV OF SCI & TECH
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Problems solved by technology

[0004] Aiming at the deficiencies of the above-mentioned prior art, the present invention proposes an indoor model test method for the tunnel lining and supporting structure, which can reliably simulate the strongly uneven confining pressure generated at the top of the tunnel and the two sides and the two-way effect of the surrounding rock on the bottom of the tunnel. The effect of yielding pressure overcomes the limitations of the existing tunnel support structure indoor model test

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[0028] In order to make the purpose, technical solutions and advantages of the present invention clearer, the technical solutions in the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are the embodiment of the present invention. A part of the embodiments, but not all the embodiments, and other embodiments obtained by those of ordinary skill in the art without making an inventive step, all belong to the protection scope of the present invention.

[0029] A kind of indoor model test method of tunnel lining support structure, such as figure 1 As shown, including loading pit wall (1), jack (2), steel plate (3), plank (4), cement mortar (5), shrinkable lateral support (6): consisting of jack (61), I-beam (62) and shrinkable backing plate (63), tunnel lining support structure (7), concrete base (8).

[0030] First, according to the specif...

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Abstract

An indoor model test method for a tunnel lining support structure, which consists of three parts: a jack, a retractable lateral support and a tunnel lining support structure. The jack is arranged around the lining support structure to simulate the effect of surrounding rock pressure on the lining , the retractable lateral support connects the two feet of the lining support structure, which is used to simulate the two-way yielding support effect of the surrounding rock of the tunnel floor on the lining footing structure. The type, materials and geometric dimensions of the tunnel lining support structure are based on The actual engineering prototype is scaled down to a certain scale. The invention is used in the indoor model test research of geotechnical engineering, and well simulates the mechanical action of the tunnel or mine roadway surrounding rock pressure on the lining support structure. The test operation is effective and reliable, and it is used to test the mechanical properties, deformation and failure characteristics of the lining structure. And further applied to engineering practice, providing reliable data and reference.

Description

technical field [0001] The invention relates to an indoor test device and method for geotechnical engineering, in particular to an indoor model test method for lining and supporting structures of tunnels or mine roadways and chambers. Background technique [0002] In recent years, the progress of modern city construction in my country has been getting faster and faster, and the construction of underground rail transit, urban subway projects and mine roadway chambers has continued to develop. At present, the most widely used structures for tunnel support are metal brackets, U-shaped steel brackets, and anchor shotcrete supports. However, in the process of use, due to the low strength of the support and the small shrinkage, many problems have occurred, and the situation occurs frequently. For this reason, it is necessary to carry out indoor model tests before the support structure is applied to the actual project to measure the bearing capacity and deformation of the support st...

Claims

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Application Information

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IPC IPC(8): G01N3/12
CPCG01N3/12G01N2203/0048
Inventor 张金松姚韦靖庞建勇何壮志
Owner ANHUI UNIV OF SCI & TECH
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