Application of Comprehensive Geophysical Prospecting Methods to Goaf of Metal Ore Mines: A Case Study of the Wang’ershan Mine Goaf, Jiaojia Gold Mine, Shandong Province
WANG Hua-feng1,2,LIU Rong-quan3,ZHENG Qiang3,CHEN Ying-jun1,2 , GUO Dong2,4, LIU Jun1,YAN Jia-yong2 (1. Nuclear Engineering and Geophysics, East China Institute of Technology, Nanchang, Jiangxi 330013; 2. MLR Key Laboratory of Metallogeny and Mineral Assessment, Institute of Mineral Resources, Chinese Academy of Geological Sciences, Beijing 100037;3. Shandong Institute of Geophysical and Geochemical Exploration, Jinan, Shandong 250013; 4. Resources and Environment, Hefei University of Technology, Hefei, Anhui 221008)
The increasing depth and range of metal mining lead to a growing number of goafs in metal mines. The collapse of mined-out areas and other geological hazards greatly influence the safety of mining and people’s living, Therefore, the accurate positioning of goafs is particularly important. In this paper, we take the Wangershan goaf in the Jiaojia gold mine for example, and utilize the high-density resistivity, ground penetrating-radar and seismic imaging methods to carry out comprehensive tests of detection for goafs. The tests found 16 geophysical anomaly areas, and 12 anomaly areas were validated to be mine goafs in combination with geological and drilling data (a successful ratio 75%). Integrated with the electric and seismic anomaly characteristics, we determine the 3-D spatial shapes of the goafs. It is demonstrated that a variety of geophysical methods dominated by electrical-seismic methods can clearly reflect the 3-D spatial locations and distributions mined-out areas. Thus, these tests provide reference for goaf detection in the Jiaojia gold deposit and other metal mines.
【CateGory Index】： P631