【摘要】 基于离散元思想,结合随机理论,以崩落矿岩散体为研究对象,建立了非均匀散体碰撞运动模型.该模型主要研究内容包括:模型假设条件、散体颗粒的随机生成、颗粒单元的稳定性分析、颗粒单元的初始移动、颗粒单元的碰撞过程以及颗粒单元运动的随机性等.根据所建立的非均匀散体碰撞运动模型,利用C#编程语言研发了二维放矿仿真系统.该系统包括参数输入、模型生成、仿真模拟和数据统计四个功能模块.设计了无底柱分段崩落法放矿模拟方案,所得结论与类似文献对比,基本相同,说明利用非均匀散体碰撞运动模型模拟散体流动是可行的.更多还原

【Abstract】 By combining the discrete element method with the stochastic medium theory,the collision movement model of non-uniform granular media is proposed,which includes random generation of particles,stability analysis of granular units,initial movement of granular unit,collision process of granular unit and randomness of movement of particles and so on. Based on the established collision movement model of non-uniform granular media, a 2 D drawing simulation system was developed using C# language,which includes four modules of parameter input,model generation,emulational simulation,and data statistics. A pillarless sublevel drawing simulation scheme was designed and was found to be consistent with the study from relevant literatures,indicating it is feasible to simulate discrete granule flow using collision movement model of non-uniform granular media.更多还原