友众煤业150202工作面富水异常区分布规律研究

Study on the Distribution Law of Water-rich Abnormal Area in the 150202 Working Face of Youzhong Coal Industry

为了查明150202工作面顶板富水区域分布特征,采用无线电波透视与瞬变电磁探测相结合的方法,查明了工作面顶底板异常结构区分布情况,结合钻探验证工作,判断了工作面开采过程中突水可能性。结果表明:150202工作面的主要异常区分布在顶板上覆20 m及顺层内,主要异常区推断为陷落柱附近构造引起的裂隙发育造成的异常;异常区内的含水层富水性较弱,对回采影响较小。

In order to find out the distribution characteristics of the water rich area on the roof of 150202 working face, the method of combining radio wave perspective with transient electromagnetic detection was used to find out the distribution of the abnormal structure area on the roof and floor of the working face. Combined with the drilling verification work, the possibility of water inrush in the mining process of the working face was judged. The results show that the main abnormal areas of 150202 working face are distributed in 20 m above the roof and in the bedding,and the main abnormal areas are inferred to be caused by the fracture development caused by the structure near the collapse column;The aquifer in the abnormal area is weak in water yield and has little impact on mining.