煤层顶板导水裂缝带发育高度探测研究——以黑龙江省双鸭山双阳煤矿为例

An Exploring Research of Coal Roof Water Conducted Zone Height——A Case Study in Shuangyang Coalmine, Shuangyashan, Heilongjiang

煤层顶板导水裂缝带发育高度是煤矿设计部门在留设防、隔水煤柱时必须考虑的一个重要参数,对煤矿水体下采煤、顶板防治水具有重要意义。基于双阳煤矿水文地质补充勘探项目,在8#煤层采空区上方施工两个地面钻孔,采用地面钻孔钻井液漏失量实测法、钻孔电视摄像技术及传统经验公式法相结合的方法,综合确定8#煤层顶板导水裂缝带发育高度为43.7~45.7m,为地质条件相似矿区在合理确定开采上限、留设防（隔）水煤柱等问题提供方法和数据支持。

The height of coal roof water conducted zone is an essential parameter should be considered during the barrier pillar design;and very important to coal mining under water-bodies, roof water control. In the Shuangyang coalmine hydrogeological supplementary exploration project, two surface boreholes drilled above the coal No.8 gob area, through drilling fluid leakage measurement, combined with borehole television imaging technology and traditional empirical formula method, comprehensively determined coal No.8 roof water conducted zone height is 43.7~45.7m. Thus have provided methods and data support in issues of reasonable determination of upper mining limit, barrier pillar leaving etc. in geological condition similar mining areas.