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为了优化矿井采掘布局,减少冲击地压灾害发生,基于水力压裂法对义马煤田范围内不同埋深位置展开地应力测试研究。分析了垂直、水平应力场和泥岩抗拉强度各自差异性的原因,初步掌握了地应力场的分布特征。
In order to optimize the layout of mine excavation and reduce the occurrence of rock burst, the ground stress test based on hydraulic fracturing was carried out for different burial depths in Yima coal field. The reasons for the difference of vertical and horizontal stress field and mudstone tensile strength are analyzed, and the distribution of geostress field is preliminarily mastered.