【摘要】 为了得出岩爆与应力分布状态之间的关系,为制定合理的岩爆预防及治理措施提供依据,采用数值模拟的方法,研究了岩爆巷道的围岩应力状态。结果表明:非均匀薄壁应力现象的存在,是掘进工作面岩爆频发的重要原因;对于硬脆性的围岩体,在受到扰动时,由于巷道围岩体内的应力集中峰值距离巷道表面距离较近,应力集中峰值就可能超过岩体破坏的极限强度,从而使岩石突然破坏,发生岩爆现象。该成果对岩爆的预防具有一定的参考价值和指导意义。更多还原

【Abstract】 In order to obtain the relationship between rock burst and stress distribution,and provide a basis for taking rational precaution measures on rock bursts,a numerical simulation method is used to model the rock stress in a rock roadway. The results show that non-uniform thin-walled stress is the main reason of the frequent rock burst in driving roadway. When a hard-brittle rock body is disturbed,the stress concentration may exceed the strength limit of rock,and lead to rock burst because the stress concentration is close to the rock surface of the roadway. The results are of significance to the prevention of rock burst.更多还原