煤矿安全2024，Vol.55Issue(5)：51-60,10.DOI:10.13347/j.cnki.mkaq.20222028
煤与瓦斯突出过程气-固颗粒抛出规律及突出矿井风险等级划分方法
Law of gas-solid particle ejection during coal and gas outburst and the classification method of outburst mine risks
摘要
Abstract
In order to reveal the evolution law of coal and gas outburst gas-solid particle flow,an analysis method combining field statistical data with numerical simulation data was proposed based on the discrete element numerical simulation method.The devel-opment process of gas-solid two-phase flow of coal and gas outburst was studied,and the movement track of coal and gas was re-vealed.Based on principal component analysis(PCA)and fuzzy comprehensive evaluation(FCE),27 outburst mines were classified.The research results show that coal and gas outburst can be divided into four stages:coal and gas breaking through crosscut stage,coal and gas mixed impact stage,coal and gas two-phase flow diversion stage and coal and gas outburst attenuation stage;with the development of the outburst,the two-phase flow of coal and gas is divided.Compared with coal particles,the gas movement speed is higher,mainly above the roadway,most coal particles settle to the bottom of the roadway,and a small number of coal particles and gas continue to move forward in coordination,the coal particle movement tracks are more complex than gas;through numerical sim-ulation,the coal throw volume of three outburst mines are 121.5 t,42.7 t and 320.32 t;according to PCA-FCE comprehensive evalu-ation,27 coal and gas outburst mines include 16 general outburst mines and 11 serious outburst mines.关键词
煤与瓦斯突出/气-固颗粒/离散元/综合评价方法/危险性分级Key words
coal and gas outburst/gas-solid particles/discrete element/comprehensive evaluation method/hazard classification分类
矿业与冶金引用本文复制引用
郭彦磊,刘海滨,赵乾,龚凯,陈建,杜嘉奇..煤与瓦斯突出过程气-固颗粒抛出规律及突出矿井风险等级划分方法[J].煤矿安全,2024,55(5):51-60,10.基金项目
中央引导地方科技发展资金资助项目(226Z4601G) （226Z4601G）
河北省自然科学基金资助项目(E2022209051) （E2022209051）
华北理工大学青年人才托举计划资助项目 （）
2023 年度河北省高等学校科学研究项目-青年拔尖人才资助项目(BJK2023086) （BJK2023086）
