高密度电法在灰岩地区找水中的应用  

Application of high density resistivity method in the survey of underground water in limestone area

作　　者：王永生 张玉池 WANG Yongsheng;ZHANG Yuchi(China Nonferrous Metals（Guilin）Geology and Mining Co.,Ltd.,Guilin 541004,Guangxi,China)

机构地区：[1]中国有色桂林矿产地质研究院有限公司,广西桂林541004

出　　处：《矿产与地质》2018年第2期345-351,共7页Mineral Resources and Geology

摘　　要：通过对4种地电模型(单一正方体低阻地电模型、两个相邻低阻正方体地电模型、相邻低/高阻正方体地电模型、斜相邻低阻正方体地电模型)进行三极、二极、偶极等装置的正演计算,得出不同装置对低阻体的响应特征。结合工作实际,总结出不同岩溶形态的电剖面ρs曲线特征及ρs等值线平面、断面图等异常特征。对比野外施工常用的几种装置异常幅度及分辨能力等特征后,认为:野外施工时,一般采用温纳四极装置或三极装置探测地下水效果较为理想。通过湖南某高速公路服务区及广西某地大型果园的两个成功找水案例,说明高密度电法在灰岩地区找水中有显著效果。This paper building four geoelectric model：a single cube model with low resistance,two adjacent cube model with low resistance,two adjacent cube model with low resistance and high resistance,two inclined adjacent cube model with low resistance,use these models we get different response characteristics with three pole device,diode device and Dipole-Dipole device.Based on the work,summarizes the characteristics of the electric profile resisitivity curve,plane equivalence and resistivity section with different karst forms.Contrasting the anomalous amplitude and resolution ability of different devices,research in the field of construction generally use wenner quadrupole device or three pole device detecting groundwater effect is more ideal.The results show that the high density resistivity method has a significant effect on water detection in limestone area by two successful water samples in the service area of a highway in hunan province and a large orchard in Guangxi.

关 键 词：高密度电法 地电模型 正演计算 灰岩 地下水 

分 类 号：P631.3[天文地球—地质矿产勘探] P331[天文地球—地质学]