A composite support structure, construction system and method

Abstract

The invention relates to a compound support structure, construction system and method, comprising a plurality of arc plate rings arranged longitudinally along the roadway, the inner or outer sides of the arc plate rings are provided with steel tube concrete rings, and the arc plate rings are composed of A plurality of arc plates are spliced ​​together, and the steel pipe concrete ring is formed by splicing multiple steel pipes in sections. The arc plate ring and the steel pipe concrete ring can jointly support the roadway wall. The supporting structure of the present invention has a high bearing capacity and a construction system with high construction efficiency. Low labor intensity.

Description

technical field [0001] The invention relates to the technical field of underground engineering support, in particular to a composite support structure, construction system and method. Background technique [0002] The statements herein merely provide background information related to the present invention and do not necessarily constitute prior art. [0003] At present, coal is still the largest energy supply method, and more than 80% of it is underground mining, and the mining depth is increasing at a rate of 8-12m / a per year, and a large number of kilometers deep wells have appeared. As the pressure increases, the roadway pressure continues to increase. The inventors found that the traditional support structure has insufficient bearing capacity and is not suitable for deep high-stress complex roadways, and the roadways often need to be repaired. At the same time, the separation of excavation and support processes in the traditional support form leads to slow formation of ...

AI Technical Summary

Problems solved by technology

[0003] At present, coal is still the largest energy supply method, and more than 80% of it is underground mining, and the mining depth is increasing at a rate of 8-12m / a per year, and a large number of kilometers deep wells have appeared. As the pressure increases, the roadway pressure continues to increase. The inventors found that the traditional support structure has insufficient bearing capacity and is not suitable for deep high-stress complex roadways, and the roadways often need to be repaired

At the same time, the separation of excavation and support in the traditional support form leads to the slow formation of the roadway and affects the coal mining efficiency

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