科研之友
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摘要
The water in the overlying rock of seabed gold mine directly threats the exploitation safety. The strike drift at 135 m level of the Xinli mine district of Sanshandao gold mine in Shandong province, was selected to be the applicable site for high-density resistivity method, using which to detect water-bearing structures in surrounding rock 200 meters below a measuring line of 635 m long. Three DC devices including Wenner, Dipole-Dipole and Schlumberger were implemented in the selected drift respectively, authenticated each other and collected good detections. The apparent resistivity inversion results of these devices give the consistent conclusion that three different resistive layers exist under the strike drift. The rock mass of 30 m thick under the level of 135 m is a high resistivity layer, which indicates no or little water in the rock mass between the levels of 135 m and 165 m. The rock mass ranging from 30 m to 60 m in depth under the level of 135 m has low resistivity and bears fracture water. And a very high resistivity layer deeper than 60 m under 135 m indicates the aquosity of the rock mass under -200 m progressively decreases. These detection results show well agreement with the conclusions of field hydrogeology surveys and hydrological structure analyses and that high-density resistivity method is feasible for uncovering water-bearing structures in drift.
- 出版日期2016-12
- 单位中国科学院地质与地球物理研究所; 中国科学院地质与地球物理研究所兰州油气资源研究中心
