采动覆岩导水断裂带发育高度研究方法探讨

导水断裂带高度是留设防隔水煤（岩）柱和水体下采煤安全性评估的重要参数，对矿井安全生产、保水采煤和生态保护具有重要实用价值。对经验法、现场实测、物理模法和数值模拟法等导水断裂带确定方法进行了总结、对比和实例分析，总结了各种方法的实用条件、优缺点，建议采用2种及以上综合观测和探测方法，以相互验证。以现场钻孔漏失液观测和钻孔电视观测为主，物探探测方法为辅来确定导水断裂带高度，采用物理模拟或数值模拟方法作为辅助研究方法从面和立体角度进行覆岩破坏规律动态研究，形成以点到面再到空间的全方位综合探测与分析技术方法体系，为煤（岩）柱合理留设、水体下安全采煤提供了重要依据和技术支撑。

Discussion on the Methods for Determining the Height of Fractured Water-conducting Zone

The height of fractured water-conducting zone is the important parameter for determining waterproof coal pillar and evaluating the coal mining safety under the water，and has the important practical value for the safety in production of coal mine，water preserved mining and ecological protection.The empirical formula method，field measurement method，physical simulation and numerical simulation method of fractured water-conducting zone determination is summarized and compared.The practical conditions，advantages and disadvantages of various methods were summarized.The comprehensive observation and detection of two methods or more is recommended to verify each other.The field water leakage observation and borehole TV are used as the main methods，and the geophysical detection method as auxiliary means are determined the height of water-conducting zone.The physical simulation or numerical simulation method are also as the auxiliary to make the dynamic study on overburden strata failure law from the plane and three-dimensional perspective，forming the integrated exploration and analysis methodology from point to plane and to space.The research results provide an important basis and technical support for the coal pillar design and safety mining under water.