摘要
为研究巷道风流分布规律,并依此为井巷风量精确测定提供指导,利用自行改造设计的试验系统对圆形巷道断面风流分布规律进行研究,结果显示同一巷道断面风速变化趋势与风速无关,风速沿巷道中心线至巷道壁呈现逐渐减小的趋势,且巷道风流在靠近边壁约20%距离处存在风速骤降区,实际风速测定时应考虑此区域对风量测定的影响,同时利用曲线拟合的方式对巷道风流分布进行进一步分析,该拟合具有较高可信度,可依此计算巷道断面任一点的风速值。
In order to study the law of airflow distribution and provide guidance for accurate measurement of airflow in roadways,this paper studied the distribution law of airflow cross-section in circular roadways by means of self-renovation experimental system.The results indicated that the trend of airflow variation in the same roadway cross-section had nothing to do with the wind speed,and the wind speed decreased gradually along the central line of the roadway to the roadway wall and about 20%of the distance existed a sudden drop area of wind speed.The influence of this area on wind measurement should be taken into account in actual wind speed measurement.Meanwhile,this paper used curve fitting method to further analyze the distribution of wind flow in roadways.The fitting has high reliability and can be used to calculate the wind speed at any point in the roadway.
作者
李亚俊
李印洪
吴洁葵
姚银佩
LI Yajun;LI Yinhong;WU Jiekui;YAO Yinpei(Hunan Labour Protection Institute of Nonferrous Metals,Changsha 410014,China;Hunan Key Laboratory of Ventilation and Dust Control for Non-Coal Mines,Changsha 410014,China)
出处
《有色金属（矿山部分）》
2019年第5期102-104,110,共4页
NONFERROUS METALS(Mining Section）
基金
"十三五"国家重点研发计划项目(2018YFC08000302)
关键词
巷道
风流
规律
曲线拟合
roadway
air flow
law
curve fitting
