三山岛海底金矿突涌水优势渗流通道与来源研究

发布时间：2019-02-12 14:22

【摘要】：在对巷道导水裂隙详细调查量测的基础上,通过对导水裂隙产状的归纳总结,结合涌水水样的温度、矿化度及氢、氧同位素的动态监测结果,分析了三山岛金矿两个矿区的渗流优势方位以及矿坑水与地表水体的连通性。研究表明:西山矿区的渗流优势方位与最大水平地应力平行,而新立矿区的渗流优势方位与最大水平地应力近于垂直;西山矿区存在海水、基岩咸水和第四系淡水的稳定补给,新立矿区的咸水和淡水补给量不断减小,海水补给量不断增大;新构造断裂对矿区渗流优势方位的控制作用大于采动裂隙,使得西山矿坑与地表水体存在良好的连通性,也控制着海水补给矿坑的方式;而新立矿仅在采动裂隙的影响下与海水、咸水和淡水存在较弱的连通性。
[Abstract]:On the basis of the detailed investigation and measurement of the water diversion fissures in the roadway, the occurrence of the aqueduct fissures is summarized, and the dynamic monitoring results of temperature, salinity and hydrogen and oxygen isotopes of the water gushing water samples are combined. The dominant direction of seepage in two mining areas of Sanshandao Gold Mine and the connectivity between pit water and surface water body are analyzed. The results show that the dominant direction of seepage in Xishan mining area is parallel to the maximum horizontal ground stress, while the dominant direction of seepage in Xinli mining area is nearly vertical to the maximum horizontal stress. In Xishan mining area, there is a steady supply of salt water in bedrock and fresh water in Quaternary system, but the supply of salt water and fresh water in Xinli mining area is decreasing, and the supply of sea water is increasing. The controlling effect of the neotectonic fault on the dominant direction of seepage in the mining area is greater than that of the mining fissure, which makes the Xishan mine and the surface water body have good connectivity, and also controls the way of sea water recharge. However, Xinli only has weak connectivity with seawater, salt water and fresh water under the influence of mining fissures.
【作者单位】：中国科学院地质与地球物理研究所中国科学院页岩气与地质工程重点实验室;山东黄金矿业(莱州)有限公司三山岛金矿;
【基金】：国家自然科学基金项目(41172271,41372323,41402280)资助
【分类号】：TD74;P641.463

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