多极距中梯观测与反演研究  

A STUDY OF MULTIPLE ELECTRODE DISTANCE CENTRAL GRADIENT SURVEY AND INVERSION

作　　者：吕玉增[1,2] 葛为中[2] 彭苏萍[1] 

机构地区：[1]中国矿业大学(北京)煤炭资源与安全开采国家重点实验室,北京100083 [2]桂林理工大学广西隐伏金属矿产勘查重点实验室,广西桂林541004

出　　处：《物探与化探》2013年第1期92-97,共6页Geophysical and Geochemical Exploration

基　　金：国家自然科学基金项目(41164004;40774057);广西自然科学基金项目(桂科自0832263);广西隐伏金属矿产勘查重点实验室建设项目(11-031-20);桂林理工大学科研启动基金项目

摘　　要：针对传统中梯激电效率高、数据量少等特点,提出多极距中梯观测技术,配合现有的多通道发射、接收机,可在不增加太多工作量的情况下,尽可能采集更多的视电阻率和视极化率数据,以获取更多的地电信息,进行二维反演,实现中梯断面成像。模型正演合成和初步实测数据的反演表明,多极距中梯观测与反演的结果可基本等效于对称四极测深效果,但工作效率成倍提高,可推广应用。In view of the characteristics of traditional central gradient IP method,such as high efficiency and less data amount,this paper puts forward the multiple electrode distance central gradient survey method.Using the existing multi-channel transmitter and receiver with a little additional work,this method can get more apparent resistivity and apparent polarizability data to realize 2D inversion imaging.The inversion results of modeling and measured data have shown that the multiple electrode distance central gradient survey basically has the same effect as the symmetric four-pole sounding,and at the same time can improve work efficiency multiply.So,the multiple electrode distance central gradient survey can be applied widely.

关 键 词：中间梯度 激发极化法 多极距观测 反演 

分 类 号：P631[天文地球—地质矿产勘探]