井中激电地-井方式井旁球体正反演  

FORWARD AND INVERSION OF SPHERE BESIDE WELL IN THE METHOD OF GROUND-WELL INDUCED POLARIZATION

作　　者：周峰[1] 潘和平[1] 吴国平[2] 徐健[2] 陈滢[2] 

机构地区：[1]中国地质大学地球物理与空间信息学院,湖北武汉430074 [2]中国地质大学信息工程学院,湖北武汉430074

出　　处：《物探与化探》2008年第3期321-325,共5页Geophysical and Geochemical Exploration

基　　金：国家自然科学基金资助(40674069)

摘　　要：以激发极化法中的地-井方式中的体极化球形体作为研究对象,采用解析法对地下半空间的电位场进行求解,利用提取出的井中二次场异常电位差进行反演,得出极化球体的球心离井的距离和球心的埋深。通过计算机进行正反演模拟,验证了进行正反演计算的解析式的正确性,并从物理意义上对正反演过程中出现的现象进行分析。最后给出该方法的适用条件以及注意事项。研究对激发极化法地下勘探目标的定量分析具有明确意义。This paper researches the sphere beside a well when performed in ground-well IP, forwarding the underground semi-space electric field with analytical solution, and inversing its depth and distance to well by the secondary field abnormal potential differences. We validate the correctness of these forward and inversion formulas by computer simulation, analyze their physical principle, and give their applicable conditions. This research has a definite significance for quantitative analysis of probing the underground objectives with IP.

关 键 词：井中激发极化 井旁球体正反演 二次场异常电位差 

分 类 号：P631[天文地球—地质矿产勘探]