循环系数对非稳态可控循环通风系统主要参数的影响  

The effect of recirculation factor on the main parameters of non steady controlled recirculation system

作　　者：魏建平[1] 胡卫民[2] 刘明举[1] 李辉[1] 

机构地区：[1]焦作工学院,河南焦作454000 [2]郑州煤炭管理干部学院,河南郑州450052

出　　处：《煤炭学报》2000年第z1期126-129,共4页Journal of China Coal Society

基　　金：煤炭科学基金资助项目!(95安 10 80 7)

摘　　要：根据建立的矿井通风系统的一维非稳定流动网络模型和瓦斯浓度的纵向弥散模型 ,模拟分析了循环系数对循环风机开启、关闭及瓦斯非正常涌出等非稳态情况下 ,循环区各分支风量、瓦斯体积分数变化的影响 。Based on the established models of undimensional non steady flow in mine ventilation network and methane longitudinal dispersion, efforts have been made to simulate and analyze the effect of recirculation fraction on the variation of air quantity and methane concentration in all the branches of the recirculation system under transient conditions such as the start up and shut down of the recirculation fan, the abnormal emission of methane , etc. A foundation has been laid for the selection and the optimum of the recirculation factor.

关 键 词：可控循环通风 循环系数 非稳态 体积分数 风量 

分 类 号：TD722[矿业工程—矿井通风与安全]