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

Abstract

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.

Keywords

• mine, gas outburst, ventilator, switching ventilator, switching ventilator without blowing-out, frequency-conversion adjustment, wind resistance adjustment, louver air door