鲁杰, 张磊. 坚硬覆岩条件下矿震诱发冲击地压机制与防治技术[J]. 煤矿安全, 2018, 49(8): 165-168.
    引用本文: 鲁杰, 张磊. 坚硬覆岩条件下矿震诱发冲击地压机制与防治技术[J]. 煤矿安全, 2018, 49(8): 165-168.
    LU Jie, ZHANG Lei. Mechanism of Rock Burst Induced by Mine Earthquake Under Hard Overlying Strata and Prevention Technology[J]. Safety in Coal Mines, 2018, 49(8): 165-168.
    Citation: LU Jie, ZHANG Lei. Mechanism of Rock Burst Induced by Mine Earthquake Under Hard Overlying Strata and Prevention Technology[J]. Safety in Coal Mines, 2018, 49(8): 165-168.

    坚硬覆岩条件下矿震诱发冲击地压机制与防治技术

    Mechanism of Rock Burst Induced by Mine Earthquake Under Hard Overlying Strata and Prevention Technology

    • 摘要: 为了保证济三煤矿5301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。

       

      Abstract: In order to ensure the safety recovery of the 53 lower 01 working face of Jisan Coal Mine, the model of rock burst induced by hard overburden rock seismic shock is established by theoretical analysis. The mechanism of rock burst induced by mine earthquake is studied according to the movement laws and the energy propagation process of the overlying strata, and the radiation area of the strong mine earthquake is determined. The large diameter borehole and roof cracking technique are used to carry out pressure relief in the dangerous area of strong mine earthquake, and the real time monitoring of rock burst is carried out by drilling chip method. The results show that the maximum drilling cuttings in the dangerous area after pressure relief did not exceed the critical value (4.0 kg/m), less than the impact limit of pulverized coal, which effectively prevents the danger of rock burst.

       

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