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安基山矿区属斑岩型和膏盐矽卡岩型铜矿床。矿区地层褶皱断裂发育，断层产状陡立，裂隙节理发育，并有0.5—4米垂距的溶洞，钻孔渗水漏水，坍塌掉块极为普遍。钻进强烈高岭土化花岗闪长斑岩或石膏层时，泥浆污染，易发生缩径、糊钻泥包等现象。为预防事故，施工中采用泥浆护壁（使用当地黄土，并以纯碱、CMC、烤胶碱、铁铬盐、石灰水为处理剂）。每一机台均配有立式电动搅拌机（容量0.3—0.6立方米）。堵漏曾采用氯化钙、711为快干剂的水泥，成捆的竹帘芦苇、砖头、砂子、布袋水泥、油基粘土粉、油基石膏粉等多种措施，取得了一定成效。1977年开始试用了聚丙烯酰胺（PAM）低固相泥浆护壁和堵注中等程度的漏失层。实践证明效果显著。
Anji Mountain mining area is a porphyry type and gypsum salt skarn copper deposits. The stratigraphic folds and fractures in the mining area develop steeply and the fracture joints develop. There are karst caves with a distance of 0.5-4 meters. Water leakage and leakage from drilling holes are very common. Drilling into a strong kaolin granitic diorite porphyry or gypsum layer, the mud pollution, prone to shrinkage, paste drilling mud package and so on. In order to prevent accidents, mud retaining walls (using local loess, soda ash, CMC, roasted caustic soda, ferric chromium salts and lime water as treatment agents) are used in the construction. Each machine is equipped with vertical electric mixer (capacity 0.3-0.6 cubic meters). Plugging has used calcium chloride, 711 for the quick-drying agent of cement, bundles of bamboo curtain reed, brick, sand, bag cement, oil-based clay powder, oil-based gypsum powder and other measures, and achieved some success. Beginning in 1977, polyacrylamide (PAM) low solids slurry was used to wall and plug a moderate loss of layer. Practice has proved effective.