高密度电法对齐大山铁矿西帮地下水物探实践

High-density Electrical Method for Groundwater Geophysical Prospecting in the Western Part of Qidashan Iron Mine

为探究齐大山铁矿西帮涌水问题,采用分布式高密度电法进行勘探。通过电阻率异常断面图,对地层岩性和断层进行划分和识别,查明工作区地层岩性、结构和厚度、含水层特征及富水性、发育程度、隐伏断裂等情况。经分析,分布式高密度电法呈现的异常特征清晰,共探明4条隐伏断裂构造,获取的结果真实合理;边坡岩石类型、风化程度及断裂构造等是引起边坡地下涌水的因素。

In order to explore the problem of water gushing in the west of the Qidashan Iron Mine,the distributed high-density electrical method is used for exploration.Through the abnormal resistivity cross-section map,the formation lithology and faults are divided and identified,and the formation litholo⁃gy,structure and thickness,aquifer characteristics and water richness,development degree,and hidden faults in the working area are identified.After analysis,the abnormal characteristics presented by the dis⁃tributed high-density electrical method are clear,and a total of 4 hidden fault structures have been identi⁃fied,and the obtained results are true and reasonable.The rock type,weathering degree and fault structure of the slope are the factors that cause the underground water gushing of the slope.