薄基岩条件矿震诱发煤与瓦斯突出研究

Research on Coal and Gas Outburst Induced by Earthquake in Thin Bedrock Condition

以赵楼煤矿3303工作面为研究对象,建立了厚表土层薄基岩地质条件下矿震诱发煤与瓦斯突出的发生机制,采用RFPA数值模拟探讨了表土层厚度对矿震诱发煤与瓦斯突出的影响。对不同危险区域采用顶板深孔爆破断定、预先瓦斯抽放和煤层注水的措施进行防治,并采用钻屑法对冲击地压实时监测,有效地预防了矿震诱发煤与瓦斯突出的危险。

Taking the 3303 working face of Zhaolou Coal Mine as the research object, the occurrence mechanism of coal and gas outburst induced by mine earthquake was established under the geological condition of thick surface soil layer and thin bedrock, and the influence of the thickness of the surface layer on the coal and gas outburst induced by mine earthquake was discussed by RFPA numerical simulation. For different dangerous areas, the measures such as roof long-hole blasting, gas drainage and coal seam water injection were adopted to prevent and control and the real-time monitoring for rock burst was carried out by drillings method, that effectively prevent the risk of coal and gas outburst induced by mine earthquake.