【摘要】 岩溶水系统非均质性是制约南方岩溶金属矿区防治水工作的关键难题之一.通过充分挖掘勘察及采掘过程中积累的水文地质资料,查明断层、岩溶、火成岩带等地质结构非均质因素的分布特征;通过绘制马坑矿区岩溶水系统7个不同时期的流场图,分析了天然条件及疏干降水条件下矿区岩溶水系统的特点,得出断层及岩溶发育控制着岩溶水的强径流带,可作为超前探水及疏干降水的主要目标;而火成岩局部隔水带的隔水作用使矿区岩溶水表现出强烈的不统一性,利用局部隔水带对矿区岩溶水进行分期防治,可尽快解放该区矿体,增加矿区产量,对马坑矿区长期发展具有重要意义.更多还原

【Abstract】 The heterogeneity of karst water system is the key challenge for water prevention and control in metal mineral deposits with karst water in southern China.Taking Makeng iron mine as the subject,the distribution heterogeneity characteristics of hard structural factors including faults,karst,igneous rocks are identified by data mining of all the hydrogeological information available in this paper.In addition,the characteristics of karst water system in natural condition and dewatering conditions are analyzed by drawing the water level contour maps of 7different periods.It is concluded that the fault and karst,which control the concentrated runoff zone of karst water,can be used as the main target of advanced water detection and dewatering.Karst water system shows strong heterogeneity under the influence of igneous local impermeable belt.The ore body of Makeng Iron Mine can be liberated effectively and its production can be increased rapidly by multi-phase prevention and control of the karst water in the mining area,utilizing the local igneous impermeable belt,which can ensure its sustainable development.更多还原