内蒙古某矿区水文地质特征及矿坑涌水量计算分析

Hydrogeological Characteristics Analysis and Pit Inflow Calculation of a Mine in Inner Mongolia

根据水文地质条件,矿区分为基岩裂隙水区及第四系洪积层和冲积层孔隙水区两个水文地质区。矿区所在区域水文地质单元属阴山西部岩浆岩、变质岩裂隙较贫水区,山脉属阴山山系大青山山脉以北构造剥蚀的低山丘陵区,区内无常年性地表水流,间歇性河流因远离矿区又地势低洼,对矿床充水无影响。通过水均衡法及相关分析法计算确定矿区涌水量计算参数。计算预测结果与1987年勘察时预测结果比较接近,说明本次计算采用的公式比较合理,水文地质参数选取的比较准确,并符合实际,可以做为矿山今后开采的依据。

The mine area is divided into bedrock fissure water area and Quaternary alluvium and alluvial pore water area. The hydrogeological unit in the area where the mining area belongs is magmatic rock and no annual surface water flow in the western Yinshan. Because of the distance from the mining area and lowlying, there is not effect on water filling. The calculation parameters of the water inflow in the mining area are determined. The results are close to the prediction results in 1987, which indicates that the calculation formula is reasonable and can be used as the basis for the future mining.