导水裂隙带发育高度研究

The developing height of water-flowing fractured zone

通过分析工作面地质条件,在覆岩破坏发育高度经验公式预测的基础上,选择井下仰上孔观测方法,施工了一个采前孔与两个采后孔,进行了注水漏失量观测,通过采前、采后注水漏失量随钻孔深度变化曲线分析,获得了导水裂缝带发育高度。

Through the analysis of the geological condition of the working face, based on the prediction of the overburden failure development height using the empirical formula, selected the up-hole observation method, constructed a hole before mining and two holes after mined to measure the water leakage. By analyzed the water leakage curve with drilling depth before and after mined, access to the development of water-flowing fractured zone height.