一、问题的提出 在部分矿井中,由于开拓系统上的一些问题,使煤翻笼处于进风大巷中,致使在翻煤时,因冲击气流作用,扬起大量煤尘,严重地污染了进风巷道。尽管有的矿井,采用了净化水幕等措施,也不能有效解决进风巷道严重的粉尘问题。据测定:在没有洒水措施时,翻笼处粉尘浓度高达400～800毫克/ First, the issue put forward In some mines, due to open up some of the problems on the system, the coal cage in the wind into the alley, resulting in turning coal, due to the impact of airflow, raised a large number of coal dust, seriously polluted Into the windway. Although some mines, the use of water purification curtains and other measures, it can not effectively solve the problem of serious dust into the airway. It is determined that: in the absence of watering measures, turned the cage dust concentration as high as 400 to 800 mg /