三维平台下基于资源价值模型的自然崩落法放矿方案优化

为科学地进行放矿控制和放矿管理，提出三维平台下基于资源价值模型的自然崩落法放矿方案优化方法。在三维平台上根据矿山原始数据资料建立地质模型和工程模型，确定出矿水平，以此为基础进行放矿点自动布置；建立块段模型，并在前期对崩落矿石流动规律研究的基础上建立各放矿点不同放矿高度分层的品位计算数据搜索模型，通过地质统计学估值得到放矿点品位分布；建立基于放矿分层的资源价值模型，以市场价格、生产成本及贫损指标为基础参数，计算各放矿分层的价值和利润，确定不同技术经济条件下各放矿点的最佳放矿高度、担负矿量和出矿截止品位，从而确定放矿优化方案，确保矿山经济效益和资源回收率最大化。使用VC++编程语言和hoops软件包实现了该方法，整个过程在三维可视化环境下进行，方便直观。矿山实例表明，该方法具有很好的操作性和可靠性。

Oredraw Scheme Optimization of Block Caving Based on Ore Resource Value Model Under 3D Platform

The purpose of this paper is to take oredraw scheme optimization scientifically and reasonably.A new optimization method of oredraw design scheme under 3D platform was proposed based on resource value model. Mine geological model and engineering model were established and oredraw level was determined under 3D platform according to original data of mine,and then drawpoints were assigned on the oredraw level automatically.Geological block model and draw slice model were established to obtain drawpoints grade distribution with geostatistics method based on previous study of flow law of ore and rock.Oredraw resource value model which contains basic parameters of market price,mine cost and mining dilution and loss index was established to calculate value and benefit of every draw slice,and then to calculate best draw height,cut-off grade and tonnage of every drawpoint under different technical and economic conditions,so as to determine the optimized oredraw scheme,which ensures the maximization of economic benefits and the maximization recovery rate of resources of mine.The method was implemented using VC++ programming language and hoops visualization tool box.The whole process was carried out in 3D visualization environments.Mine practical examples show that the proposed method is of excellent operability and reliability.