采空区煤柱失稳诱发下煤层冲击机理研究  

Research on mechanism of rock burst induced by coal pillar failure in mine goaf

作　　者：瞿孝昆 姜福兴[1] 王慧涛[2] 朱斯陶 张明[1] 徐柯[3] 张威涛[1] 

机构地区：[1]北京科技大学土木与环境工程学院,北京100083 [2]山东大学土建与水利学院,山东济南250000 [3]北京科技大学东凌经济管理学院,北京100083

出　　处：《采矿与安全工程学报》2017年第6期1134-1140,共7页Journal of Mining & Safety Engineering

基　　金：国家自然科学基金项目(51274022)

摘　　要：以内蒙古某矿冲击地压事故为工程背景,对上煤层采空区遗留煤柱失稳诱发下煤层掘进工作面冲击地压机理进行了研究。通过建立基于覆岩空间结构的煤柱应力模型,对工作面开采前后煤柱稳定性进行了评价,得到了触矸点传递应力和采空区侧向支承压力叠加是诱发下煤层掘进工作面冲击地压的主要原因的结论,并提出了合理的巷道布置区域。研究结果对类似条件下的掘进工作面开采设计及安全生产具有一定的借鉴意义。Based on the engineering background of a rock burst accident in a mine in Inner Mongolia, this paper studies the mechanism of rock burst induced by the goaf coal pillar failure in the upper coal seam. According to the average stress model established based on the spatial structure of the overlying rock stratum, the stability of the coal pillar is evaluated, the main reason of the rock burst occurred at the roadway in the lower coal seam is the superposed stress of the transferred stress near the point con-tacting with the waste rock and the abutment pressure. The reasonable area of the roadway arrangement is proposed. The research results are good for mining design and coal mine safety production under sim-ilar conditions.

关 键 词：冲击地压 采空区 煤柱失稳 触矸点 传递应力 

分 类 号：TD353[矿业工程—矿井建设]