Theoretical analysis and application of coal pillar preserve in Selian second coal mine
Lei Chengxiang, Chen Miaohu, Deng Runyi, Fu Baojie
1. Huainan Western Mine Investment Management Corporation Ltd., Erdos 017000, China; 2. Shool of Energy and Security of Anhui University of Science and Technology, Key Laboratory of Coal Mine Safety and High Efficiency Mining, Ministry of Education, Huainan 232001, China
According to geological conditions of Selian second coal mine, methods of limit equilibrium theory, numerical simulation and field practice were used to analyze limit equilibrium section width of coal and vertical stress, the maximum principal stress and distribution of the columns at different coal pillar sizes, which determined reserved width of coal pillar was 12.0m. The measured results showed that stress state of surrounding rock was improved by size of coal pillar, top and bottom of roadway and deformation of two groups were controlled effectively, which provided technical reference for coal pillar preserve in similar conditions.
雷成祥,陈苗虎,邓润义,付宝杰. 色连二矿区段煤柱留设理论分析及应用[J]. 煤炭与化工, 2017, 40(8): 1-5.
Lei Chengxiang, Chen Miaohu, Deng Runyi, Fu Baojie. Theoretical analysis and application of coal pillar preserve in Selian second coal mine. CCI, 2017, 40(8): 1-5.