摘要
矿井中风机突然启动或停止运转、瓦斯与煤岩突出、瓦斯或煤尘爆炸以及放炮等都可以引起井巷风压瞬间发生跳跃式的突变。风压突变后,巷道风量也发生变化,这时的矿井通风处于非稳定状态。本文应用流体力学基本原理,分析讨论井巷风压突变时期的矿井非稳定通风过程及其计算方法。图4,表1,参7。
Air pressure changing abruptly caused by some occasions such as fan operating or terminating abrutly,gas and coal—rockoutbursting,gas and coal—dust exploding etc.exist in mine ventilation. The mine ventilation is being in the non—steady state with the change of airflow rates airways due to abrupt changing air pressur.Based on the elementary principles of fluid mechnaice, this paper analyzes and discusses the process of non—steady ventilation. The methods of computation are also demonstrated in the paper. 4figs., 1tab., 7refs.
出处
《湘潭矿业学院学报》
1991年第1期8-15,共8页
Journal of Xiangtan Mining Institute
关键词
矿井
巷道
通风
非稳定
风压
突变
mine ventilation
non—steady airflow
abrupt changing air pressuer
