综掘工作面粉尘运移的数值模拟及压风分流降尘方式研究  

Numerical simulation of dust migration and study on dust removal modes with the forced ventilation shunt in a fully mechanized workface

作　　者：秦跃平[1] 张苗苗[1] 崔丽洁[1] 刘江月[1] 

机构地区：[1]中国矿业大学(北京)煤炭资源与安全开采国家重点实验室,北京100083

出　　处：《北京科技大学学报》2011年第7期790-794,共5页Journal of University of Science and Technology Beijing

基　　金：王宽诚教育基金会资助项目

摘　　要：针对综掘工作面产生尘量高,煤尘浓度大,降尘效率低的现状,结合流体力学、气固两相流理论和射流理论等相关理论,采用FLUENT模拟技术,研究"长压短抽"式除尘通风时掘进巷道中粉尘运移和分布规律,对比分析了压入风量、抽吸比及抽、压风筒口位置等通风参数对粉尘浓度及分布范围的影响,提出了压风分流通风方式,并对其降尘效果进行了模拟分析.Large concentration of coal dust exists in the fully mechanized workface due to high dust production and low dust removal efficiency.Based on fluid dynamics,the gas-solid two-phase flow theory and the jet theory,the dust migration mechanism and distribution in a roadway under far-pressing-near-suction ventilation were studied with the FLUENT software.The effects of ventilation parameters such as the air quantity of forced ventilation,the ratio of blowing to suction and the position of the force-ventilated outlet on the concentration and distribution of the dust were analyzed comparatively.A forced ventilation shunt mode was proposed,and its dust removal efficiency was simulated.

关 键 词：煤矿开采 煤尘 通风 数值模拟 

分 类 号：TD714[矿业工程—矿井通风与安全]