摘要
通过对Y型通风情况下,运巷和风巷配风比不同时,对工作面采空区风流流场进行数值模拟。结果表明:运巷和风巷配风比越大,即运巷风量越大,流经工作面的风量也越大,工作面两端压差也越大,工作面漏向采空区的漏风量也越大,而工作面瓦斯浓度不断降低;但是上隅角和尾巷的瓦斯浓度不断升高。经过数值模拟和现场不断测试分析,确定运巷和风巷合适配风比为3∶1。
The thesis simulates the airflow field and gas transport in goaf under the different air distribution ratio of haul road and ventilating road in the Y-ventilation.The study showed that the air volume and the pressure difference of working face,and air leakage from working face to goaf will increase with the increase of air distribution ratio of haul road and ventilating road.The gas concentration of working face reduction,but the gas concentration of upper corner and end roadway with the increase of air distribution ratio of haul road and ventilating road.It can be confirmed that suitable air distribution ratio of haul road and ventilating road is 3 ∶1.
作者
王春霞
杨付领
石开仪
WANG Chun-xia;YANG Fu-ling;SHI Kai-yi(Department of Ming Engineering, Liupanshui NormalUniversity,Liupanshui 553004,China;Safety Science and Engineering College of Henan PolytechnicUniversity,Jiasozuo 454003,China)
出处
《煤》
2019年第4期18-21,共4页
Coal
基金
贵州省科学技术联合基金资助项目(黔科合J字LKLS[2013]16号)
六盘水师范学院创新团队项目(LPSSYKJTD201401)
采矿工程省级特色重点学科资助项目(黔学位合字ZDXK[2015]9号)
贵州省煤炭绿色发展协同创新中心项目(LPSSYXTZX201401)
贵州省重点支持学科项目(黔学位合字ZDXK[2016]24号)
贵州省煤炭绿色发展2011协同创新中心项目(黔教合协同创新字[2016]02)
关键词
Y型通风
配风比
瓦斯浓度
数值模拟
Y-ventilation
air distribution ratio
gasconcentration
numerical simulation
