THE APPLICATION TO DAM EXPLORATION WITH ELECTICAL RESISTIVITY TOMOGRAPHY

Using the geoelectric instrument MCOHM 21 made by OYO Company, Japan, we did the high density electric resistivity exploration for detecting geology weakness of the water reservoir dam in Ba shan, Da ye, Hui baoling of Shan dong province with the pole pole array. The fault, fracture belts, geology weakness structure and some man made hidden drain caves are displayed very clearly on the resistivity profiles. Part of results has been proved by borehole data.