突出危险采煤工作面消突试验研究

为了在煤与瓦斯突出矿井厚煤层开采中应用放顶煤工艺技术,在鹤壁煤业集团公司五矿3302工作面采用了本煤层密集钻孔和穿层孔综合抽放瓦斯的消突技术,吨煤抽放钻孔量达到0.08m以上,采前瓦斯抽排率达到42.9%,采前残存瓦斯含量明显低于矿井始突点煤层瓦斯含量.采用单项指标法、综合指标法和残余瓦斯含量法对采前突出危险性进行评价,评价结论为无突出危险.据此采用放顶煤工艺进行生产,直至工作面回采结束,杜绝了煤与瓦斯突出事故.

Study on Outburst Elimination Test of Coal Mining Face with Outburst Danger in Potential

In order to apply the top coal caving technology to the thick seam mining in a coal and gas outburst mine,a comprehensive gas drainage and outburst elimination technology with in-seam intensive boreholes and boreholes through seam was adopted for No.3302 coal mining face of No.5 Mine,Hebi Coal Mining Group Corporation.The borehole drilling length of the gas drainage per a ton of coal mining was over 0.08 m and the gas drainage rate before the mining operation was upto 42.9%.The remained gas content before t...