Composite supporting structure, construction system and method

Abstract

The invention relates to a composite supporting structure, and a construction system and method. The composite supporting structure comprises a plurality of arc plate rings which are longitudinally arranged along a roadway, wherein a steel pipe concrete ring is arranged on the inner side surface or the outer side surface of each arc plate ring; each arc plate ring is formed by splicing a pluralityof arc plates; each steel pipe concrete ring is formed by splicing a plurality of steel pipes in a segmented manner; and the arc plate rings and the steel pipe concrete rings can jointly support thewall of the roadway. The supporting structure is high in bearing capacity, and the construction system is high in construction efficiency and low in 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 here only provide background art related to the present invention, and do not necessarily constitute prior art. [0003] At present, coal is still the largest energy supply method. More than 80% of it is underground mining, and the mining depth is increasing at a rate of 8-12m / a per year. A large number of kilometer-deep wells have appeared, and as the depth of coal mining continues As the roadway pressure continues to increase, the inventor found that the traditional support structure has insufficient bearing capacity and is not suitable for deep, high-stress and complex roadways, and roadways often need to be repaired. At the same time, the traditional support method is separated from the support process, which leads to slow formation of the roadway and ...

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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