西北水电Issue(5)：68-73,6.DOI:10.3969/j.issn.1006-2610.2025.05.011
碳酸盐岩区岩溶电性特征分析
Analysis of Electrical Characteristics of Karst in Carbonate Rock Areas
摘要
Abstract
To study the electrical characteristics of karst in carbonate rock areas of Renhuai City,Guizhou Province and analyze the distri-bution law of karst in this area,the high-density electrical method was applied to the karst survey on the left bank of the reservoir area of the Meijiu Lake Tourism Project in Renhuai City,and the resistivity characteristics of the main lithologies in the area were obtained.The results show that:the resistivity range of lime dolomite is 500～700 Ω·m,the resistivity range of dolomitic limestone is 1 000～1 800 Ω·m,the resistivity range of clay is 50～100 Ω·m,and the karst with fillings has a resistivity range of 20～80 Ω·m;after verifying the No.Ⅰanomaly position of Profile 1 by drilling ZK5,this method is proven reliable.Drilling data reveal water leakage at a depth of 28.6 m and drill jamming at a depth of 28.5～29.8 m,and the actual karst position is consistent with the result inferred by the high-density electrical method.In the upper member of the Qingxudong Formation of the Lower Cambrian System in the area,karst develop-ment is distributed in a beaded pattern at approximately 30 m near the lithological contact surface,and the direction of karst development controlled by tectonics is perpendicular to the main tectonics in the area.Surface water replenishes the karst channels through depres-sions.The research results prove that the high-density electrical method can well reveal information about the plane position and depth of karst cave development in carbonate rock areas.关键词
岩溶/电性特征/高密度电法/反演Key words
karst/electrical characteristics/high-density electrical method/inversion分类
天文与地球科学引用本文复制引用
王彦琪,李叉娟,陈宗刚,朱丹,王河..碳酸盐岩区岩溶电性特征分析[J].西北水电,2025,(5):68-73,6.基金项目
国家自然科学基金项目(4247182) （4247182）
