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Mechanism of Rock Burst Induced by Mine Earthquake Under Hard Overlying Strata and Prevention Technology
Pages: 165-168
Year: Issue:  8
Journal: Safety in Coal Mines

Keyword:  坚硬覆岩矿震冲击地压机制防治技术;
Abstract: 为了保证济三煤矿53下01工作面的安全回采,采用了理论分析的方法建立了坚硬覆岩矿震诱发冲击地压的模型,根据上覆岩层的运动规律及能量传播过程,对矿震诱发冲击地压的机制进行了研究,并确定了强矿震的辐射区域,在强矿震的辐射危险区域采用大直径钻孔和顶板预裂技术进行卸压,并采用钻屑法对冲击地压实时监测,结果表明,卸压后危险区域最大钻屑量均未超过临界值(4.0 kg/m),小于冲击极限煤粉量,有效地预防了冲击地压发生的危险.
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