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针对在软弱覆岩应用传统地面深钻孔法探测导水裂缝带难以奏效的问题，分析了软弱覆岩工程地质和采动运移的特点，设计了合理的观测方案和钻孔参数，于井下仰孔应用双管双端封堵测漏新技术，首次成功地获得了软弱覆岩导水裂缝带发育的高度、形态和过程等特征；尤其是最大发育高度及其形成时间等参数，对软弱覆岩水体下安全开采是至关重要的，具有重要的生产和理论意义。
Aiming at the problem that it is difficult to detect the water-conducting fractured zone by using the traditional ground deep drilling method in the soft overburden rock, the characteristics of the soft overlying rock engineering geology and mining movement are analyzed, and the reasonable observation plan and drilling parameters are designed. For the first time, the height, shape and process of aqueduct of soft overburden rock were successfully obtained by applying double-ended and double-ended plugging leak detection technology, especially for the parameters such as maximum development height and formation time, Safe mining under overlying rock water is crucial and has important production and theoretical significance.