摘要
受复杂地形地貌特征与水文地质条件影响,眼前山铁矿井下开采过程中的水害问题尤为突出。特殊的地形地貌特征决定了露天采场是地表水的汇聚点,若不能有效地治理地表水,来自周围山体的地表水将汇入露天矿坑,并经矿坑渗入地下采场,从而造成严重水害。为降低井下开采中的水害风险,确保生产安全,本文根据眼前山矿区的水文地质特征,研究了铁矿开采影响下地表水径流规律,预测了地表水径流量,计算了露天采场坑底正常日汇水量与最大日汇水量,并采用数值模拟方法确定了井工开采过程中地表沉陷区边界,优化了矿区地表防排水方法,提出了有效的地表水控制措施,为眼前山铁矿地表水控制与露天矿坑防水工程设计提供依据。
Affected by complex topography and hydrogeological conditions,the problems of water damage in the underground mining process of Yanshanshan iron mine are particularly prominent.The special topographic features determine that the open pit is the point of convergence of surface water.If the surface water cannot be treated effectively,the surface water from the surrounding mountain will be taken into the open pit and infiltrated into the underground stope through the pit,causing serious water damage.In order to reduce the risk of water damage in underground mining and ensure production safety,this paper studies the surface water runoff law under the influence of iron ore mining based on the hydrogeological characteristics of Yanqianshan mining area,predicts the surface water runoff,and calculates the normal daily water volume and the maximum daily water volume at the bottom of the open pit.Moreover,this paper determines the boundary of surface subsidence area during the mining process by using numerical simulation method,optimizes the surface water drainage method in the mining area,proposes effective surface water control measures,and provides the basis for the surface water control and the open pit waterproof engineering design.
作者
吴庆深
刘显锋
徐能雄
WU Qingshen;LIU Xianfeng;XU Nengxiong(Dagushan Branch,Angang Group Mining Co.,Ltd.,Anshan 114043,China;Yanqianshan Iron Mine,Angang Group Mining Co.,Ltd.,Anshan 114043,China;China University of Geosciences (Beijing) ,Beijing 100083,China)
出处
《中国矿业》
北大核心
2019年第7期168-175,共8页
China Mining Magazine
基金
国家自然科学基金面上项目资助(编号:40872183
41772326)
关键词
地表水
矿区开采
水害
防治措施
眼前山铁矿
surface water
mining
water damage
prevention measure
Yanqianshan iron mine
