【摘要】 煤岩冲击灾害会造成工作面及巷道严重变形及破坏,影响煤矿的安全和高效开采,如何有效评价工作面开采过程的煤岩冲击危险性显得尤为重要。以大安山矿轴7槽西一面为研究对象,对其开采过程中的冲击危险性进行了动态评价,包括:采前冲击危险性预评价、开采过程冲击危险性实时评价和实施防冲措施后冲击危险性再次评价。评价结果与开采现场冲击危险的实际情况相吻合,真实地反映了工作面开采煤岩冲击危险性的空间区域特征和时间动态特征。更多还原

【Abstract】 Coal and rock bursting disaster may lead to serious deformation and fracture of working face and tunnel,affect coalmine safety and highly-efficient coal mining. It is very important that how to effectively evaluate the hazard of coal and rock bursting in the mining. Xiyi working face in No. 7 coalbed of Daanshan Coalmine was taken as a case study, we carried out the rockburst hazard assessment for this working face, which included:pre-evaluation before mining,real-time evaluation in mining,and re-evaluation after implementation of anti-burst measures. The evaluation results match with rockburst hazard degree of the mining on-site,reflect really the spatial regional and the temporal dynamic characteristics of rockburst hazard at this working face.更多还原