高密度电阻率法在莱州矿集区环境地质调查中的应用

经过多年地质勘探与开发，莱州矿集区金矿周边环境受到不同程度的改变和破坏。为了查清莱州矿集区仓上金矿开采带来的环境地质问题，采用高密度电阻率法在仓上矿区东北侧开展调查研究，为仓上金矿的生态修复工作提供技术支撑。本次调查工作初步查明了仓上矿区地层的地电特征、隐伏三山岛断裂的空间分布情况、地下采空区的空间分布特征以及地下海水入侵情况等环境地质问题。研究结果表明：仓上金矿北部地区海水入侵现象严重，海水入侵呈东强西弱的趋势，三山岛断裂缓解了莱州湾北部的海水入侵。高密度电阻率法能够提高环境地质调查工作的效率，是一种有效的矿集区环境地质调查方法。

Application of High Density Resistivity Method in Environmental Geological Survey of Laizhou Mining Concentration Area

After years of exploration and development，the surrounding environment of the gold mine in Laizhou ore concentration area has been changed and destroyed in varying degrees.In order to find out the environmental geological problems caused by Cangshang gold mine in Laizhou mining area，the high density resistivity method was applied to carry out section survey in the northeast side of Cangshang gold mine.The results of the investigation preliminarily identified the environmental geological problems，such as the stratigraphic geoelectric characteristics of the northeast side of Cangshang gold mine，the distribution of hidden fault structures and the underground goaf，and the extent of underground seawater intrusion.Through this investigation，the following insights have been gained：（1）The high density resistivity method can effectively identify the seawater intrusion in the northern part of Cangshang gold mine，and the seawater intrusion in the northern part of the mine is strong in the east and weak in the west.（2）The high density resistivity method can accurately identify the spatial distribution and structural water content of the hidden Sanshandao fault，which indicates that the Sanshandao fault slows down the seawater intrusion trend in Laizhou bay.（3）The high-density resistivity method can accurately identify the distribution range，strike，burial depth，water filling conditions and spatial morphology characteristics of the goaf.（4）The high density resistivity method can improve the working efficiency and is an effective method for environmental geological survey of ore concentration area，which can provide a good reference and guidance for environmental geological survey of similar areas.