Abstract:

According to the engineering problem that the empty water seriously affected mine safety production in the Wennan coal mine, it was explored by using the high density resistivity method. Based on the study on the basic principle, the job of field data collection and trim and the analysis of these data of the high density resistivity method,  the seam mining condition could be judged by using the resistivity changes. And then the water-bearing condition of goaf to the minied coal seam (goaf) was judged  according to the size of resistivity. According to the detected result of huge empty water  outside of the Wennan coal mine, the high density resistivity method has the advantages of high accuracy rate and  strong visibility, and has  some reference value for  practical engineering.

Key words: high density resistivity method; huge empty water; tripotential sonde