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根据煤与瓦斯突出工作面掘进期间瓦斯突出危险性、瓦斯涌出特点及回采瓦斯预抽效果等资料的综合分析 ,对回采工作面进行块段划分 ,并有针对性地采取工作面瓦斯抽放、浅孔松动爆破、控制回风流瓦斯浓度等防治煤与瓦斯突出措施 ,有效地防止了回采期间煤与瓦斯突出
According to the comprehensive analysis of the gas outburst danger during the excavation of coal and gas outburst working face, the characteristics of gas emission and the pre-pumping effect of gas recovery, the mining face is divided into blocks and the gas drainage , Shallow hole loose blasting, control back to the concentration of gas and other gas and coal outburst prevention measures to effectively prevent the coal and gas outburst during the recovery