矿井主通风机不停风倒机控制的研究与实现

当矿井主通风机倒机时,在倒机的短暂停风时间内,高突矿井出现瓦斯超限现象。针对该问题,提出了三种矿井主通风机不停风倒机控制方案,即矿井主通风机变速调节的倒机控制方案,风门调节风阻的倒机控制方案,在通风机入口处加装对空百叶窗式风门的倒机控制方案,比较了三种方案的优缺点后确定采用在风机入口处加装对空百叶窗式风门实现不停风倒机控制方案最合理;详细介绍了该方案在平煤集团五矿的实现及应用。实际应用表明,该方案运行效果达到了预期目标。

Research of Switching Ventilator Control without Blowing-out of Main Ventilator of Mine and Its Implementation

When main ventilator of mine is switching,high outburst mines will appear over-limit phenomenon of gas concentration in short blowing-out time of switching ventilator.To solve the problem,the paper proposed three switching ventilator control schemes without blowing-out of main ventilator of mine,namely switching ventilator control scheme of speed adjustment of main ventilator of mine,switching ventilator control scheme of adjusting wind resistance by air door and switching ventilator control scheme of installing louver air door at entrance of ventilator.It determined the switching ventilator control scheme without blowing-out implemented by installing louver air door at entrance of ventilator is the most reasonable after comparing advantages and disadvantages of the three schemes.It introduced implementation and application of the scheme in the fifth coal mine of Pingdingshan Mining Group.The actual application showed that operation effect of the scheme reaches expected target.