井间视电阻率的几何成像方法-中南大学学报.PDF

41 3 () Vol.41 No.3 2010 6 Journal of Central South University (Science and Technology) Jun. 2010 1 1 2 3 (1. 410083 2. 065201 3. 541004) P631.32 A 1672−7207(2010)03−1079−06 Geometry image method of crosshole apparent resistivity 1 1 2 3 SHEN Ping , QIANG Jian-ke , LI Yong-jun , RUAN Bai-yao (1. School of Info-physics and Geomatics Engineering, Central South University, Changsha 410083, China; 2. Safety Engineering College, North China Institute of Science and Technology, Beijing 065201, China; 3. Department of Resources Environmental Engineering, Guilin University of Technology, Guilin 541004, China) Abstract: Based on the theory of direct-current electric field in non-full space, the apparent resistivity formula that is different from half space and full space was deduced by the image method, and all apparent resistivities were determined, then the apparent resistivity isopleth map was drawn, in which observation hole depth was ordinate and power-supply hole depth was abscissa. At last, several typical geologic models were simulated by three-dimensional finite element method. The results show that the space shape and precise position of abnormity body can