Title: Application of stability analysis in surrounding rock control and support model of deep roadway

Authors: Jianfeng Cui; Weijun Wang; Chao Yuan

Addresses: Work Safety Key Lab on Prevention and Control of Gas and Roof Disasters for Southern Coal Mines, Xiangtan 411201, China; Hunan Key Laboratory of Safe Mining Techniques of Coal Mines, Xiangtan 411201, China; School of Resources, Environment and Safety Engineering, Hunan University of Science and Technology, Xiangtan, China ' Hunan Key Laboratory of Safe Mining Techniques of Coal Mines, Xiangtan 411201, China ' Work Safety Key Lab on Prevention and Control of Gas and Roof Disasters for Southern Coal Mines, Xiangtan 411201, China; Hunan Key Laboratory of Safe Mining Techniques of Coal Mines, Xiangtan 411201, China

Abstract: At present, there are more than 30 state-owned key coal mines with a mining depth of 1,000 m, and the maximum mining depth is close to 1,500 m, which is increasing at the rate of 8-12 m depth extension every year. In order to realise the sustainable development of the coal industry, the deep mining has become an important issue that the coal industry must solve. Before the exploitation of underground coal resources, the coal and rock mass are in the original stress state. After the mining activities, the original stress balance state of the coal and rock mass is destroyed, resulting in stress concentration, stress transfer and other stress changes, forming mining stress field around the mining space. It is the change of stress in the coal and rock mass that causes the deformation of surrounding rock, the movement of rock strata and the instability of structure, which leads to the occurrence of various disasters. [Received: July 7, 2020; Accepted: February 5, 2021]

Keywords: deep roadway; original rock stress; stress concentration; stress transfer; stability.

DOI: 10.1504/IJOGCT.2022.120313

International Journal of Oil, Gas and Coal Technology, 2022 Vol.29 No.2, pp.180 - 192

Received: 07 Jul 2020
Accepted: 05 Feb 2021
Published online: 14 Jan 2022 *

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