常村煤矿冲击危险性评价及防治研究

通过冲击危险性综合指数评价对正在回采的工作面进行评估，对常村煤矿21号煤层工作面进行综合指数法评价。分析了影响常村煤矿冲击危险性因素，常村煤矿发生冲击地压包括地质条件因素、开采技术因素2个方面。依据综合指数法，按照地质影响因素对常村煤矿21号煤层进行分析，得出危险指数为0.43；按照开采技术影响因素进行分析，得出该煤层危险指数为0.33。依据上述2个因素进行综合分析，得出危险指数为0.43，属于弱冲击工作面。

Research on rockburst risk assessment and prevention techniques in Changcun Coal Mine

In this paper，by using risk comprehensive index evaluation，the being mined working face was evaluated，and No.21 coal seam working face was evaluated in Changcun Coal Mine.Through analyzing the factors influencing the rockburst risk in Changcun Coal Mine，it was thought that there are two main factors，including geological conditions and mining technology.According to the comprehensive index method，geological conditions of No.21 coal seam working face was analysed in Changcun Coal Mine，and the danger index was 0.43；mining conditions of No.21 coal seam working face was also analysed，and the danger index was 0.33.Combined with these results，it was obtained that the danger index was 0.43，and the No.21 coal seam working face belongs to working face with weak rockburst danger.