运动煤粒块体与钢板撞击破碎的微机理仿真

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英文篇名：Micromechanism simulation of impact breaking between moving coal particle and steel plate 作者：邓广哲 ; 贾一涛 ; 刘辉 ; 苗鑫 英文作者：DENG Guangzhe;JIA Yitao;LIU Hui;MIAO Xin;School of Energy Engineering, Xi'an University of Science & Technology;Key Laboratory of Western Mine Exploration & Hazard Prevention of the Ministry of Education;Ningtiaota Mining Company,Shaanxi Coal & Chemical Industry Group; 关键词：煤炭清洁利用 ; 力键分析 ; 煤粒块体模型 ; 微观破坏 ; 仿真 英文关键词：clean utilization of coal;;force bond analysis;;coal particle model;;microcosmic destruction;;simulation 中文刊名：KSJX 英文刊名：Mining & Processing Equipment 机构：西安科技大学能源学院;教育部西部矿井开采及灾害防治重点实验室;陕煤集团柠条塔矿业有限公司; 出版日期：2018-10-10 出版单位：矿山机械 年：2018 期：v.46;No.538 基金：陕西省“13115”科技创新工程重大科技专项(2009 ZDKG57);; 科技支疆重大专项项目(2014AB025);; 陕西省自然科学基金重点项目(2015JS060) 语种：中文; 页：KSJX201810013 页数：6 CN：10 ISSN：41-1138/TD 分类号：52-57

摘要

为了揭示运动煤粒块体与转载点钢板之间的碰撞破碎机理,采用力键分析法,构建了煤粒块体3D模型,以煤粒块体内部结构力键断裂数目为破碎的评价指标,研究煤粒块体碰撞时内部结构变化与破碎规律;采用正交试验法分析了煤流转载系统的3个主控因素,得出运动煤粒块体撞击破碎程度与撞击速度呈线性关系,与煤粒撞击角度和粒径尺寸呈二次曲线变化;得出在3种主控因素共同作用下影响撞击破碎的主次顺序是撞击角度、速度、粒径尺寸。
        In order to reveal the impact breaking mechanism between the moving coal particle and the steel plate at transfer station, a 3 D model of the coal particle was constructed with force bond analysis method. Taking the number of the broken force bond inside the coal particle as the evaluation index, the variation and breaking laws of internal structure of coal particle during impact process were studied; three main factors of the coal flow transfer system were analyzed by orthogonal test, and it was concluded that the degree of impact breaking degree was linearly related to impact velocity, and quadratically related to impact angle and coal particle size; the importance of three main factors was impact angle, velocity and coal particle size in sequence.

引文

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