扎赉诺尔矿区水害隐蔽致灾因素普查及治理技术

General survey and treatment technology of hidden water disaster-causing factors in Jala Nur mining area

扎赉诺尔煤田为白垩系陆源碎屑岩区,岩性多为“软岩”,开采年限久远,存在未封闭钻孔、顶板承压水、地表水、老空水等水害隐蔽致灾因素。对这些隐蔽致灾因素进行了全面普查,并对其危险性进行了评估;提出顶水开采与疏干或疏降开采相结合、先疏后采与边采边疏相结合、钻孔疏干或疏降与回采疏干或疏降相结合的综合水害“三结合”治理措施,实践证明可以有效降低水害隐患,保证安全生产。最后指出煤矿水害领域的主要研究方向。

Jala Nur coalfield is a cretaceous terrigenous clastic rock area,with lithology of "soft rock",long mining life,and hidden disaster-causing factors such as unsealed drill holes,roof confined water,surface water,and old goaf water.A general survey of these hidden disaster-causing factors was carried out,and their risks were assessed.Based on the results,the three-combination comprehensive water hazard treatment measures were put forward including the combination of top water mining and drainage or dewatering mining,the combination of drainage before mining and drainage while mining,and the combination of drilling drainage or dewatering and mining drainage or dewatering.The practice has proved that it can effectively reduce the hidden danger of water hazard and ensure safe production,and the main research directions in the field of coal mine water disaster are pointed out.