【摘要】 介绍了用微地震定位监测技术揭示的采场覆岩空间破裂与采动应力场的关系。认为存在 4种由采动引起的岩体破裂类型。展示了 3种典型采动边界条件下覆岩破裂与采动应力场的关系。提出了由微震事件分布推断区段煤柱稳定性的方法。更多还原

【Abstract】 This paper introduces the relationship between spatial structure of overlying strata and mining pressure field in longwall face revealed by microseismic monitoring techniques. The authors come to conclusions as follows :There are four kinds of rock mass fractures induced by mining. This paper presents three kinds of relations between rock mass fractures and mining pressure fields matching to three kinds of mining borders. The authors point out the method of how to decide the stability of coal pillar according to microseismic monitoring results.更多还原