自然崩落法高阶段多漏斗放矿矿岩流动模拟及结构参数优化

为掌握自然崩落法多漏斗放矿属性矿岩流动特性,给出属性随机介质放矿理论基础,从放矿水平布置出发,提炼出高阶段多漏斗放矿仿真模型。采用4块模型、6块模型和9块模型3种概率模型分别考虑不同的放矿端部条件;建立流动颗粒体数据结构和空位传递模型,设计高阶段多漏斗放矿流动数据结构和模拟流程,采用C面向对象语言和hoops可视化工具包开发模拟程序,在三维可视化环境下得到了不同放矿点间距下多漏斗放矿的矿岩流动特性。根据研究结果,确定放矿底部结构优化参数,为放矿控制和放矿优化提供了参考和依据,并可作为后续放矿计划编制的基础。

Flow simulation of ore and rock and structure parameter optimization of ore drawing of high stage block caving with multiple funnels

To master flow characteristics of ore rock of block caving with multiple funnels, the basis of stochastic property medium theory was presented. Based on the arrangement of ore drawing level, a simulation model of high-stage and multi-hopper discharge was extracted. Three probability models, i.e. four-block model, six-model and nine-block model, were used for different ore drawing boundary conditions. The particle flow data structure and null-block transfer model were established. The flow simulation process of ore rock flow of multi-funnel ore drawing was designed. The simulation program was developed with C++ programming language and hoops visualization toolbox. And flow characteristics of ore-rock under different funnel spacing were obtained in 3D visualization environment. It provides reference and basis for the design of bottom structure parameter and ore drawing control, and provides the basis for the preparation of the following ore drawing scheduling.