徐庄煤矿7199综放工作面突水分析

Water inrush analysis of 7199 fully mechanized working face in Xu Zhuang coal mine

为实现7199工作面在高水压突水条件下安全回采,通过对徐庄煤矿水文地质条件分析、水质化验及工程验证确定突水水源,采用瞬变电磁探测法和巷道地震共偏移法探测技术探测7199工作面顶板含水层区域,通过工作面两巷及切眼数据综合计算,得到工作面面内及周边和顶板方向上下的相对低阻异常区域的分布情况.结果表明:较大低阻异常区域主要集中在工作面近溜子道一侧;7199工作面突水水源为顶板砂岩水和分界砂岩水,存在底含和侏罗白垩水间接补给;主要的导水通道为采动导水裂隙带.

To achieve safe mining of the 7199 face under high pressure water inrushing conditions,the analysis of hydrogeological conditions,water quality testing and engineering validation are used to determine the kind of the inrushing water,using transient electromagnetic detection method and the roadway seism offset method to detect the cap rail aquifer area of 7199 face.By calculating the data of the two scaling and through cut,the distribution of relative low resistivity anomaly area between face and cap rail can be achieved.The results show that the larger low resistivity anomalies are mainly concentrated in the region face aside;the inrushing water of 7199 face are roof sandstone water and stone boundary water,also the Cretaceous and Jurassic bottom within direct water will supply the inrushing water;the major water guide access for mining water flowing are fractured zone.