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为了确定山东某矿7108工作面的上覆岩层导水裂缝带高度,采用导水裂缝带理论计算公式法、经验类比计算法、覆岩关键层计算法分别对工作面导水裂缝带发育高度进行理论计算,此外,还进行现场实测,克服了单一方法的局限性。现场实测采用井下钻孔分段注水观测法,测得导水裂缝带高度为97.7m。通过对这4种方法得到的结果综合对比分析,得出7108工作面导水裂缝带高度为97.7~108.8 m,为该矿井防治顶板水提供了依据。
In order to determine the height of water-conducting fracture zone in overburden rock of 7108 working face in a mine in Shandong Province, the height of water-conducting fractured zone in the face of a coal mine in Shandong Province was calculated by theoretical formula of hydraulic conductivity fracture zone, experiential analogy calculation method, Theoretical calculations, in addition, field measurements, to overcome the limitations of a single method. Field measurement using underground borehole water injection observation method, measured the height of the water-bearing fracture zone was 97.7m. Through the comprehensive comparison and analysis of the results obtained from the four methods, it is concluded that the height of the water-carrying fracture zone in 7108 is 97.7 ~ 108.8 m, which provides the basis for the prevention and control of roof water in this mine.