Emergency Disposal Measures for Power-off of Non-intrinsically Safe Electrical Equipment during Abnormal Gas Emission in Working Face

Abnormal gas emission is a common gas phenomenon in coal mining face of gas mine. In order to prevent gas accidents, on the one hand, gas extraction measures are adopted to reduce or avoid abnormal gas emission; on the other hand, when abnormal gas emission is unavoidable, in order to prevent abnormal gas emission from occurring gas explosion accident by electric spark, non-cost cutting is adopted. Emergency measures such as power supply for quality and safety electrical equipment are taken as the second line of defense. Aiming at the abnormal gas emission phenomenon in East 102 coal face of Weijiadi Coal Mine, in order to avoid the gas explosion accident during the abnormal gas gushing period, the emergency measures for gas abnormal emission were expounded from the aspects of gas electric blockade, power cut and evacuation.