Abstract: Taking a Coal Mine of Guizhou province for example，the spatial distribution situations of three zones and the structural fissure rich water areas in the mined-out area were investigated.Based on the resistivity sounding method，the line probing profile maps were obtained by setting 8 detection lines in testing zone.Combining with geological and hydrogeological conditions and physical characteristics of the testing zone，and the resistivity distribution characteristics of line probing profile maps in the testing zone，some special areas were delineated，including 2 effect areas of rock mass joint fracture or broken water-bearing scope，23 effect areas of three zones filling with water or mud in mined-out area，6 effect areas of three zones without being filled or being filled a half in mined-out area and 9 moderate flooding zones.According to contrast between the hydrogeology survey and the exploration profile maps by resistivity sounding method，it is confirmed that the probing profile by resistivity sounding method are reasonable and reliable in the testing zone.So，the resistivity sounding method can be applied to forecast the hydrogeological characteristics in advance in the testing zone.

Key words: Resistivity sounding method, Probing lines, Resulting image, Flooding zones