关键词: 厚硬岩层, 断层, 煤柱, 冲击危险性, 支承压力

Abstract: Based on the theory of mine pressure, calculation model of fault tectonic stress and abutment pressure of mined out area are constructed. Taking a rock burst mine as an example, the stress distribution of coal pillar with irregular faults under the control of thick hard rock strata is obtained by superposition of both of them, and then, the burst hazard is analyzed. The results show that the peak value of stress is 133m away from the goaf, reaching 62MPa, and the west side of the goaf 75~239m is the impact danger zone, while the east side is 65~239m. Incomplete fracture of high key stratum is the main reason for the increase of abutment pressure. The calculation results are verified by field monitoring data, and the results can be used as the theoretical basis for the prevention and control of burst hazards.