山西七元矿岩溶水赋存运移特征及底板突水分析

七元煤矿位于山西省寿阳县东部,主釆煤层为太原组15号煤,煤层底板之下的奥灰岩溶水对釆煤存在潜在危胁。为此对该矿区奥灰岩溶水的赋存运移特征及15号煤层底板突水情况进行分析,结果显示：井田位于区域奥灰水径流区的中部,,径流条件较好;15号煤层的水位线总体特征为北西部高,东南部低,地下水自西北至东南径流。经计算,采区的突水系数为0.047MPa/m,推测该区碱奥灰岩溶水对15号煤层的开釆没有影响。

Karstic Water Hosting and Migration Characteristics and Floor Water Bursting Analysis in Qiyuan Coalmine,Shanxi

The Qiyuan coalmine is situated in eastern part of Shouyang County, main mineable coal seam is No.15 coal in Taiyuan Formation, there is potential threatening to coal mining from Ordovician limestone karstic water under the coal seam floor. Thus, analyses of mine area Ordovician limestone karstic water hosting and migration characteristics, No.15 coal seam floor water bursting situation carried out. The results demonstrated that the minefield is situated at middle part of regional Ordovician limestone water runoff area, and has good runoff conditions; No.15 coal seam general water table features are high northwest, low southeast, groundwater flow from northwest to southeast. According to estimation, water bursting coefficient in winning district is 0.047MPa/m, it is presumed that the Ordovician limestone karstic water in the area has no impact to mining of No.15 coal seam.