Abstract: The high density resistivity is an important geophysical survey method. Based on the different electrical resistance of different materials, the subsurface soil conditions can be surveyed by studying the electrical field of the ground. In recent years, the high density resistivity receives wider applications in the geological investigations. This paper presents the high density resistivity survey results for the Huaihe River Crossing Tower for 1000kv UHV Transmission Project. Verified by the test boring data, it is concluded that the high density resistivity method can accurately overburden soil and the bedrock. Compared with other conventional geological investigation methods, such as, test boring, cone penetration test and dynamic cone penetration test, this method has also the advantage of easy to operate, it can also collect a large amount of data and provides rich geological information.

Key words: High Density Resistivity Method, Geological Engineering Investigation, UHV Transmission Line