二矿四采区30＃煤层回采巷道失稳状况浅析

Talking about the unstable situation at the actual roadway of 30# coal seam mining area,No.2 coal mine

主要从影响巷道稳定性的因素、巷道失稳破坏的特征出发 ,对 30 # 煤层回采巷道的失稳状况进行分析 ,制定出维持回采巷道稳定的技术措施。

The unstable situation existing in the actual mining roadway is analyzed,and the technical measures for defending are worked out.