随着矿井开采深度和范围的增大,巷道掘进传统的通风方法在经济上和技术上都会遇到一定困难。可控循环通风方法是以满足卫生标准为前提,使一部分被污染的风流净化后循环使用或者直接循环使用,达到加大工作面风量的目的。早在70年代初,国内外就对掘进巷道的可控循环通风进行了研究,积累了很多研究成果和实践经 With the increase of mining depth and range, the traditional ventilation method of roadway excavation will encounter some economic and technical difficulties. Controllable circulation ventilation method is to meet the health standards as a precondition, so that part of the contaminated air purification after recycling or direct recycling, to increase the work face air volume purposes. As far back as the early 1970s, researches on controllable circulation ventilation in driving roadways have been carried out at home and abroad, and many research achievements and practical experiences have been accumulated