3-D PROCESSING TECHNOLOGY OF HIGH DENSITY RESISTIVITY DATA AND APPLICATION TO URBAN GROUND INVESTIGATION

This paper uses the measured high density resistivity data to build 3-D data field. It chooses the 3-D inversion technique in association with the least squares method to process the data field after inversion parameter optimization. The inversion results are presented using 3-D visualization imaging technology. The results show that the use of 3-D processing technology can analyze the geophysical data spatially through multi-tool and multi-angle and can effectively eliminate the influence of the side effects. Geophysical results are more intuitive, clear and easy for analysis and interpretation. Finally, using drilling information, the accuracy and advancement of 3-D data processing technology are proved.