水资源与水工程学报2017，Vol.28Issue(5)：87-92,6.DOI:10.11705/j.issn.1672-643X.2017.05.15
厄立特里亚Zara地区Koka金矿开采的地下水资源可持续性分析
Ground water resources sustainability in Zara Koka glod mine of Eritrea
摘要
Abstract
Due to water shortage under arid climate conditions in Africa,the effective balance of ground-water resources is extremely important.Based on the analysis of hydrogeological conditions of Zara Koka gold deposit areas,a quasi-three-dimensional finite difference groundwater flow model was developed to predict the influence of mine water supply on the drawdown of groundwater level under the three climatic conditions of high water flow,low water flow and normal water flow during the mining and closure of Koka gold mine,and a comparative analysis was made on the degradation of groundwater level with and without mine water supply.The results show that the daily water supply is about 0.97×104m3/a in the first 1 to 3 years,and the daily water supply is about 1.01 ×104m3/a in 4 ~7 years.The mining of the mine water supply will not cause the local groundwater resources to dry up,and after the mine is closed, the aquifer water level will soon recover.Even under the most unfavorable conditions of simultaneous increase of mine water supply and dry river flow,the maximum groundwater level drawdown in the well site is 1 m to 1.2 m,and the groundwater level drawdown is only 0.2 m in the edge area 2 km from the center of the well site.The simulation results can provide scientific basis for the water supply of the mine in arid areas with high temperature.关键词
地下水资源/MODFLOW模型/含水层/地下水位/水资源可持续性分析/金矿开采/Zara地区Key words
ground water resources/MODFLOW model/aquifer/groundwater level/analysis of sustain-abityity/glod mining/Zara area分类
天文与地球科学引用本文复制引用
何鑫,庞红璐,周泉吉,李文娟,闫鑫宇,林国庆..厄立特里亚Zara地区Koka金矿开采的地下水资源可持续性分析[J].水资源与水工程学报,2017,28(5):87-92,6.基金项目
国家自然科学基金项目(40902066) （40902066）
