突出煤层附近小型岩溶构造的危害及治理方法

Hazards and Treatment Methods of Small Karst Structures near Outburst Coal Seams

针对沙曲矿在太灰岩开拓期间揭露小型溶洞,引起水与瓦斯混合涌出的事故,提出了分区治理的模式,一般区域采用定向长钻孔进行探测,危险区域施工加防喷措施的探放水短钻孔,通过分区域合理布置探测钻孔,有效疏放区域太灰水,同时有效抽放煤层瓦斯及构造带瓦斯,保障了矿井安全生产。

Aiming at the analysis of the accident caused by the exposure of small karst caves during the development of the TaiYuan Group limestone in the Shaqu mine, which caused mixed inflow of water and gas, a treatment model based on different areas was proposed. Namely, the long directional boreholes for detection in general areas;the short boreholes for the risk areas with anti-outburst measures of gas and water, through the reasonable arrangement of the detection boreholes by areas, water is discharged and gas is drained in an effective way, and safety production ensured.