刚果(金)卡莫亚铜钴矿水文地质条件浅析

Research of the hydrogeological condition of Kamoya copper and cobalt mine,Congo

卡莫亚铜钴矿位于刚果(金)加丹加省利卡西市坎博韦镇,是世界著名的坎博韦铜钴矿带的一部分。区内地质、水文地质条件复杂,查清矿区内地下水资源量及矿区水文地质条件对矿区未来生产建设和开发具有重要意义。本文在总结矿区地质和水文地质原始资料基础上,分析研究矿区内含水层结构、补给径流排泄关系、地下水动态变化及边界条件等,简要评价该矿水文地质条件。结果可知:矿区总体富水性表现为内强外弱,主矿段-中矿段北部-北矿段北部-西矿段一线为中等-极强富水区,周围为弱富水区。大气降水入渗补给为主要充水来源;受东侧坎博韦矿排水影响,地下水主要向坎博韦矿方向径流排泄,地下水多年变化特征为降水-开采型。分析结果可为下一步建立矿区水文地质模型、计算地下水资源量和矿坑涌水量奠定坚实基础,对未来矿山开采建设具有重要意义。

Kamoya copper and cobalt mine is located in Kabove,Likasi,Katanga province,Congo,it’s a part of the world famous Kabove copper and cobalt ore belt. The conditions of Geological and hydrogeological in this area is very complex,investigating the groundwater resources amount and mine hydrogeological conditions will be significative for production and development of this mine in future. This paper will analysis the aquifer structure,groundwater recharge,runoff,discharge,groundwater regime and boundary condition etc based on the mine’s original data of geology and hydrogeology,to evaluate the mine’s hydrogeological condition briefly. The results show that: the overall water-rich performance of the mining area is strong inside and weak outside. The first line of the main ore section-the northern part of the middle ore section-the northern part of the north ore section-the west ore section is medium-strong water-rich area,and the surrounding area is weak water-rich area and the infiltration recharge of atmospheric precipitation is the main source of water filling. Affected by the drainage of the eastern cambowei mine,groundwater is mainly discharged into the direction of cambowei mine. The groundwater changes over the years are characterized by the analysis results of the dewatering and mining type,which can lay a solid foundation for the next step of establishing the hydrogeological model of the mining area to calculate the amount of groundwater resources and the amount of water gushing from the mine pit. It is of great significance for the future mining and construction of the mine.