不同装置下高密度电阻率法对于低阻异常的数值模拟分析  

Numerical simulation analysis of low resistance abnormal body by high density resistivity method under different devices

作　　者：栗烈 王猛[2] Li Lie;Wang Meng(First Team of Hunan Nonferrous Metals Geological Exploration Bureau,Chenzhou,Hunan,423000,China;Geological Institute of China Chemical Geology and Mine Bureau,Bejing,100101,China)

机构地区：[1]湖南省有色地质勘查局一总队,湖南郴州423000 [2]中化地质矿山总局地质研究院,北京100101

出　　处：《化工矿产地质》2022年第3期275-281,共7页Geology of Chemical Minerals

基　　金：中国地质调查局矿山地质环境调查项目长江中游磷、硫铁矿基地矿山地质环境调查(编号:DD20160314)。

摘　　要：为了讨论不同装置下高密度电阻率法对低阻异常的探测效果,本文通过建立不同类型的地电模型,运用有限差分法和最小二乘法分别进行正、反演数值模拟分析,结果表明温纳装置异常形态简单,其垂向分辨率相对较高;偶极装置随着极距增大,测量曲线变得相对复杂,给解译工作带来困难;三极装置抗干扰能力相对较强,横向、垂向均具有较高的分辨率。野外实际勘查中应根据实际情况,选择合适的装置进行探测工作。In order to discuss the detection effect of high density resistivity method used in the low resistance abnormal body under the different devices.In this paper,we establish different kinds of ground electric models and perform positive and inversion numerical simulation analysis respectively by finite difference method and the least square method,The results show that the abnormality shape is simple and its vertical resolution is relatively high under the wenner device;As the pole distance of the dipole device increases,the measurement curve becomes relatively complex,which makes the interpretation work difficult;The tripole device has relatively strong anti-interference ability,and both the lateral and vertical directions have high resolution.In the actual field exploration,appropriate devices should be selected according to the actual situation.

关 键 词：高密度电阻率法 低阻异常体 数值模拟 

分 类 号：P631.322[天文地球—地质矿产勘探]