煤层顶板导水裂缝带高度综合探查技术

新建矿井应进行顶板"两带"实测。采用井下上仰钻孔注水测漏法、井-地联合微震监测法以及UDEC软件数值模拟，综合探查高家堡矿井首采面顶板导水裂缝带发育高度。利用这3种方法获得的工作面停采线附近的导水裂缝带高度数值基本一致，分别为88.03 m、86.54 m和87.00 m，与实际情况相符合。与地面钻孔冲洗液法或井下上仰钻孔注水测漏法探查结果结合起来，井-地联合微震监测具有突出优势，可实现煤层顶板覆岩破坏与变形的时-空动态四维监测，是研究顶板"两带"发育高度及其变化规律的重要方法。 

Comprehensive detection technique for coal seam roof water flowing fractured zone height

Heights of roof strata "two-zone" should be measured for each new coal mine. To determine water flowing fracture zone height of the first mining face roof in Gaojiabu coal mine comprehensively, three methods including injection water leakage measuring in upward slant holes, underground-ground joint microseismic monitoring and numerical simulation with UDEC were applied. Similar fracture zone height values which are 88.03 m, 86.54 m and 87.00 m were detected by three methods near the working face stop line. Combined with injection water leakage measurement in underground upward slant hole or surface borehole, strata deformation and failure time-space four dimensional characteristics can be monitored by the underground-ground joint microseismic method which has outstanding advantages in analyzing the changing rule of the fracture zone height.