Rational Control of Driving Speed in Coal and Gas Outburst Coal Mining Face

With the mechanics analysis on the stress distribution status in front of the gateway driving face and in combination with the site conditions of Pingmei N 0.10 Mine,the paper studied the variation correlation of coal and gas outburst prediction index and the driving speed,and discussed the rational control of the driving sp eed of working face. The analysis held that the driving speed should well keep step with the stress releasing speed and thus could ensure safety driving of the gateway. The optimum driving speed of No. Ji15-24080driving working face in Pingmei No.10 Mine Should be controlled in 1.3~ 1. 4 m/ d,so as to provide the basis to improve the gateway driving efficiency and to promote the mine safety production.