回采工作面导水断层防水保护煤柱合理宽度研究

Study on reasonable width of coal pillar waterproof and protected by water fault of coal face

为了解决西曲矿9#煤层由于断层的影响底板存在奥灰承压水影响工作面安全回采问题,通过理论分析及数值模拟分析研究导水断层附近进行煤层采掘活动,导致底板破坏及断层活化最终形成突水通道的过程,根据突水通道形成的机理,确定合理的防水保护煤柱宽度,使工作面准备阶段巷道掘进及开切眼避免了涌水事故的发生,也为类似情况下保护煤柱的留设提供了参考实例。

In order to solve the 9# coal seam in west coal mine because of the influence of the fault floor Mr Grey confined water affecting the safe stoping face problems, through theoretical analysis and numerical simulation study guide water near fault for coal mining activities, leading to floor damage and formation process of water inrush channel fault activation, in the end, according to the mechanism of water inrush channel formation, determine reasonable waterproof protective coal pillar width, starting cut to make preparation for the working face roadway drivage and avoid the water burst accidents, also for similar cases protection coal pillar design provides a reference for instance.