Supporting structure of tunnel in bias salt cavity environment and construction method of supporting structure

A technology of support structure and construction method, applied in tunnels, tunnel linings, underground chambers, etc., can solve problems such as tilting, collapse, and deformation of tunnel support structures, and achieve guaranteed support effects, reliable support effects, and construction The effect of simple process
CN105178979AInactive Publication Date: 2015-12-23中铁二十五局集团第四工程有限公司 +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
中铁二十五局集团第四工程有限公司
Publication Date
2015-12-23
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a supporting structure of a tunnel in a bias salt cavity environment and a construction method of the supporting structure. The supporting structure comprises gate-type frameworks, a steel mesh arranged on the wall of a tunnel and supported by the gate-type frameworks via supporting parts, anchor rods arranged at the periphery of the tunnel and connected into a whole with the steel mesh, and a plurality of anchor cables arranged on the two sides of the tunnel and between the adjacent gate-type frameworks and going deep into a stable batholith from the wall of the tunnel, wherein the two ends of the anchor cables are tensioned on the stable batholith and anchor devices arranged at the inlets of the anchor cables on the wall of the tunnel. By the adoption of the structure, the constructed tunnel is supported in multiple ways, the prestress anchor cables which are tensioned on two sides can adapt to the situation of different pressures on the two sides of the tunnel, the tunnel can be well supported in the same situation, and deformation of the supporting structure and collapse of the tunnel, caused by biasing of the tunnel, are prevented.
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Description

technical field

[0001] The invention relates to a support structure used in tunnel construction and a tunnel construction method. Background technique

[0002] When roads and railways pass through mountains, tunnels need to be built, and the tunnel construction process is greatly affected by the resistive environment. When the tunnel construction encounters karst and fractured structures, the construction is very difficult. During construction, the tunnel or the periphery of the tunnel will encounter multiple large and medium-sized dissolved cavities. Because the tunnel is located in the dissolved cavity and the filling conditions in the dissolved cavity are different For other reasons, it will lead to uneven force on both sides of the tunnel, resulting in bias voltage and the formation of bias voltage dissolution cavity. When constructing in a biased solution cavity environment, due to the existence of biased pressure, the tunnel support structure is prone to inclination, ...

Claims

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