海石湾矿掘进工作面防治煤与瓦斯突出技术

Technology to Prevent Coal and Gas Outburst in Driving Face of Mine Gateway in Haishiwan Mine

结合海石湾煤矿掘进工作面实际情况,确定了煤与瓦斯区域防突方法及局部防突方法,并对防突方法所达到的效果进行了分析,结果表明:根据该矿实际情况得到开采保护层的有效保护范围依次为垂距最大为50m、沿倾向为130m、沿走向为50～100m;运用区域防突及局部防突措施后,进行效果检验得出相应指标为:VCH4=7.59m3/t,S=0.52kg/m,K1=0.41mL/(g.min1/2),说明掘进工作面前方已无突出危险性。

： According to the actual conditions of the driving face in Haishiwan Mine, the coal and gas outburst regional prevention method and local prevention method were set up. An analysis was conducted on the effect obtained by the outburst prevention method. The results showed that according to the actual conditions of the mine, the effective protected scope of the mining protected layer would be 50 m in a vertical distance maximum, 130 m along the inclination and 50 100 m in strike in sequence. After the regional outburst prevention and local outburst prevention measures applied, the relevant indexes obtained from the effect verification were VCH4 7.59m3/t, S = 0. 52kg/m, K1 = 0.41mL/ （g rain1/2） and showed there would be no outburst danger in the front of the driving face.