【摘要】 通过对综放面围岩结构的分析 ,论述了工作面煤壁产生片帮冒顶的机理 ,从而得出了支承压力、老顶回转、煤层硬度、节理裂隙、推采方向、停采时间是影响煤壁片帮冒顶的主要因素的结论 ,并结合峰峰局五矿 5 2 110面片帮冒顶的实际情况 ,说明了防治片帮冒顶的技术措施和取得的技术经济效果更多还原

【Abstract】 This paper describes mechanism of coal wall emerging side fall roof caving in workface through analyzing structure of rockstrata in sub-level caving mining workface,and getting out:bearing pressure of support,oldroof turn round,hardness of coal seams,joint crack,mining direction,time of closing mining is main factor in affecting side fall roof caving of coal wall,combining practical situation of side fall roof caving in fifth coal mine of Fengfeng bureau.It explains this technical measure and gains good result.更多还原