中国矿山工程

The SICOMINES copper cobalt mine in Congo (Kinshasa) was selected as research background. Through analyzing the hydrogeological conditions of the mining area, the evolution characteristics of groundwater flow field and drainage datafrom 1976 to 2022, the law of water level variety were studied in depth. The results indicate that the dynamic variation characteristics of groundwater were mainly dominated by lateral recharge, followed by precipitation, and Drainage is mainly dominated by supply, followed by storage. The groundwater flow is dominated by pipeline flow and supplemented by seepage,close connection between aquifers, low groundwater seepage resistance, gentle slope, good connectivity, and the drainage of the lower aquifer can reduce the water level of different aquifers. The groundwater system is mainly composed of fractures and caves, and the main groundwater runoff zone is collected by cavities，groundwater is controlled by geological structure.