彬长矿区受顶板巨厚白垩系洛河组含水层威胁严重，覆岩破坏高度是矿井水害防治最关键的参数之一。以往探查多采用地面钻孔或井下钻孔压水试验方法测试，确定的裂高采厚比在12～13倍，与矿井实际揭露资料不符。本次以彬长矿区大佛寺煤矿为试验矿井，采用地面钻孔漏失量观测、施工中孔内水位观测、钻孔窥视、地面水位长观、数值模拟等综合探查技术，并结合工作面涌水量分析，对工作面覆岩破坏高度进行综合探查和研究，获得了准确的探查结果和良好效果，裂高采厚比最大可达26.98倍。覆岩破坏高度综合探查技术可为相似条件下的探查方案设计提供借鉴。%The coal mining in the Binchang mining area is seriously threatened by the roof ultra-thick Cretaceous Luohe Formation aquifer, while one of the most critical parameters is overburden failure height. Surface drilling or underground packer permeability test are often used previously, measured failure height/mining thickness ratio is 12~13 times, that is not tally with actual revealed data. Tak-ing the Dafosi coalmine in Binchang mining area as a test mine, using integrated exploration technologies of surface drilling borehole leakage measurement, borehole water table observation, infrared borehole imaging, surface water long-term observation, numerical sim-ulation etc., combined with working face water inflow analysis, carried out integrated working face overburden failure height study, and obtained correct results, maximum failure height/mining thickness ratio can be 26.98 times as high. This overburden failure height inte-grated exploration technology can provide reference for the design of exploration scheme of coalmines under similar conditions.
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