武甲煤矿3号煤层区域综合防突措施研究

Study on Comprehensive Anti-outburst Measures in No.3 Coal Area of Wujia Coal Mine

武甲煤矿为突出矿井,采用预抽煤层瓦斯技术作为3号煤层区域性的防突治理措施,并根据瓦斯地质条件提出了科学合理的钻孔布置方式。在进行防突效果检验时,分别对井巷揭煤工作面、回采工作面等区域选择钻屑瓦斯解吸指标、残余瓦斯含量作为检验指标,发现各区域K1值与W残值均小于临界值,表明防突效果良好,无突出危险性。

Wujia Coal Mine is a outburst mine,the gas technology of pre-drainage coal seam is adopted as the regional anti-outburst control measure of No.3 coal seam,and a scientific and reasonable drilling arrangement method is put forward according to the gas geological conditions.When the anti-outburst effect is tested,the gas desorption index and residual gas content of drilling debris are selected as the test indexes in the coal face and mining face respectively.It is found that the K1 value and W residual value of each area are less than the critical value,which indicates that the anti-outburst effect is good and there is no outburst danger.