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.