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中文摘要：
露天境界优化是露天矿设计和生产经营管理的重要环节,而最终境界优化是一项需要综合考虑矿山资源状况、开采技术条件、矿产品销售价格、矿石开采及处理成本等多种因素,实现经济效益最大化的复杂工作。目前,三维可视化矿床模拟技术和露天境界优化方法的完美结合使其工序更为简化,并可获得良好的动态效果。以广西平果铝土矿为研究对象,借助DIMINE软件系统建立了该露天矿山的三维实体模型,更加准确、直观地反映了矿床与工程实体的形态及其空间分布关系。针对所建的矿体模型进行了品位估值、储量计算等工作,并基于Le-rchs-Grossmann优化方法（L-G法）对该铝土矿进行露天境界优化研究,参照采矿手册及工程经验,确定合理的露天境界优化参数,得出了该矿山露天开采的最优经济境界。结果可用来指导该矿山前期的资源开发和投资决策,并为后期安排生产计划和实时调度控制提供可靠的依据。
英文摘要：
Open pit limit optimization is an important link in open pit design,production and operational management.However,the final limit optimization is a complicated work involving an integrated consideration of mine resource conditions,mining technical condition,mineral sales price,ore mining and processing cost for maximizing the economic benefit.At present,the perfect combination of the three dimensional visualization ore deposit simulation technique and open pit limit optimization methods makes its working procedure to be simple,and a good dynamic effect may be obtained.Taking Pingguo bauxite in Guangxi Province as a case,3-D solid model of this open pit mine was established by adopting the DIMINE software system.It can reflect a more precise and intuitionistic spacial shape of deposit and working face and its distributing relationship.Aiming at the established ore body model,the works of the grade estimation,reserve calculation and so on were carried out.The study on the open pit limit optimization of the bauxite mine is made based on Lerchs-Grossmann optimization method to determine reasonable open pit limit optimization parameters through referring to mining handbook and project experience.Then a superior and economical open pit limit of the mine was achieved finally.It can be used to guide the resource development and investment decisions of the mine in earlier period and also provide a reliable basis for the arrangement of production plan and the real-time dispatch control in the later period.
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