基于 Visual Modflow 的刚果(金)迪兹瓦露天矿 地下涌水量预测.

In the actual mining process of open-pit mine, accurate prediction of water inflow at each stage is of great significance to mine safety production. In this paper, the Deziwa open-pit mine in the Democratic Republic of Congo (DRC) is taken as the center to establish the study area. Visual Modflow numerical simulation software is used to describe the boundary conditions and hydrogeological conditions of the study area and simulate the distribution of underground water flow field in the mining area and the surrounding environment. The prediction results show that the established model can better simulate the distribution of groundwater flow field in the study area, and the average water inflow in the third, sixth and tenth years of mining is 12 100 m3/d, 13 400 m3/d and 14 400 m3/d, respectively. At the same time, the groundwater inflow changes with the seasonal rainfall. The water inflow in wet season is about 1.5 times that in normal season, and about 2 times that in dry season. The quantitative analysis of the water inflow in each stage of the mining area can provide a certain scientific basis for the design of drainage in the mining area. [ABSTRACT FROM AUTHOR]