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蒙古人民共和国额尔登特矿床由“国外地质”托拉斯布尔根(Булганская)地质勘探队作完勘探工作,目前正在以露天法开采。露天矿处于高山上,露天坑底比侵蚀基面高很多。矿床勘探中圈出了两个含水层:山坡上的坡积层;矿床硬岩中的开口裂隙和构造断层带。根据水文地质钻孔揭露的岩层的全深单孔抽水试验的结果,确定了含水层的渗透参数。岩层的渗透系数为n·10~(-2)～n·10~(-4)m/
The Erlitin deposit in the People’s Republic of Mongolia was completed by exploration of the Geological Exploration Brigade of the “Geological Survey” in Булганская and is currently being mined in the open air. Opencast mines are on the mountain, and the pit bottom is much higher than the erosion base. Two aquifers are excavated in the deposit: slope deposits on hillsides; open fractures in hard-rock deposits and structural fault zones. Based on the results of full-bore single-hole pumping test of rock strata exposed by hydrogeological drilling, the parameters of permeability of aquifer were determined. The permeability coefficient of rock formation is n · 10 ~ (-2) ~ n · 10 ~ (-4) m /