三山岛金矿水文地质条件的研究

A STUDY ON HYDROGEOLOGY OF SANSHANDAO GOLD MINE

三山岛为一临海大型金矿,由于开拓阶段矿坑涌水量大,并发生突水,涌泥等淹井事故。因此,给矿山开拓与开采安全带来威胁。为了进一步搞清矿区的地质构造与水文地质条件,进行了补充勘探,运用各种方法进行水文地质条件的研究。结果查明该矿为一典型裂隙充水矿床,矿坑水补给源有海水,卤水及第四系水,其中海水占50％;海水补给方式为越流补给。研究结果表明矿坑不会有大量地下水瞬时溃入,不存在突水淹井的威胁,可以采用疏干方案防治矿区地下水。

The Sanshandao Gold mine is a large operation near sea. Big water flow at the development stage caused mud burst and flooded roadways and shaft, threatening development and mining safety.In order to get an insight into the geological structure and hydro-geological aspects in the mine field, additional prospecting work was conducted.The hydro-geological conditions have been studied using different methods, concluding that the deposit is a typical fissure water-logged deposit. Water make-up sources include sea overflow, bittern and quaternary water. The results shown that no big instantaneous water flow would occur, posing no threat of sudden flooding of roadways and shafts. Dewatering method would be used for prevention and control of ground water in mine field.