Three-dimensional asymmetrical supporting system

Abstract

The invention relates to a three-dimensional asymmetrical supporting system, which comprises a plurality of steel tube concrete single racks. The steel tube concrete single racks are connected together via longitudinal connecting beams to form a support in the shape of a tunnel in an encircling manner, a metal screen is laid between the support and a surrounding rock of the tunnel, anchor cable holes are distributed on the longitudinal connecting beams, anchor cables penetrate through the anchor cable holes of the longitudinal connecting beams and the metal screen to outwards extend, and simultaneously anchor rods are arranged in the surrounding rock of the tunnel according to designed inter-row spaces. The three-dimensional asymmetrical supporting system has the advantages that pertinence and supporting ability are high, the structure is simple, devices are connected conveniently, protecting surface area is large, stability is good and stress is reasonable in coordination.

Description

technical field [0001] The invention relates to a deep engineering support system, in particular to a three-dimensional asymmetric support system for deep tunnels. Background technique [0002] With the development of society and economy, more and more underground rock mass projects such as coal mine roadways, highway and railway tunnels and large hydropower stations are being built, and the situation of deep roadways and chamber groups with large buried depth and large cross-sections is gradually increasing. The ground stress increases, the water leakage increases, the ground temperature rises obviously, and the support of deep soft rock and joint broken rock mass becomes more and more difficult. In view of the characteristics of large deformation and difficult support of deep mine roadways, special research has been carried out on the support methods of deep high-stress soft rock large-section roadways at home and abroad. Steel bracket support to the combined support of a...

AI Technical Summary

Problems solved by technology

In recent years, there are few studies on this problem, and the related research on the asymmetric deformation and failure of deep roadways is still very immature. systematic research on

[0004] Generally speaking, under the conditions of deep high-stress soft rock and broken rock mass, roadways and chamber groups exhibit asymmetric large deformation and difficult support problems. It is difficult to meet the needs of deep high The support needs of stress roadways and chamber groups have seriously affected the production and safety of deep rock mass engineering

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