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中文摘要：
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。
英文摘要：
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.
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