Application of stability analysis in surrounding rock control and support model of deep roadway Online publication date: Fri, 14-Jan-2022
by Jianfeng Cui; Weijun Wang; Chao Yuan
International Journal of Oil, Gas and Coal Technology (IJOGCT), Vol. 29, No. 2, 2022
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]
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