摘要
以河南永夏煤田车集煤矿二2煤层为例,在大量实测瓦斯基础参数的基础上,研究了煤的瓦斯吸附特征,对瓦斯含量和工作面预测指标进行了跟踪测试,分析了其相互关系,并对始突瓦斯含量临界值进行了比较研究。通过实验,模拟研究了钻屑瓦斯解吸指标△h2与瓦斯压力、瓦斯含量及煤的破坏类型的关系。综合确定了车集矿二2煤层突出区域预测瓦斯含量临界值为9.0 m3/t,并在实践中得到了验证。
The paper took 112 seam of Juji coal mine in Yongxia coalfield as an example. On the basis of measuring lots of gas parame- ters, the adsorption characteristics were studied, gas content and prediction indexes were measured and their relations were studied. The paper comparatively studied the critical value of original outburst gas content. Through the test, the relationships of adsorption in- dex of drill - cuttings Ah2 , gas pressure, gas content and destructive type of coal were studied. Eventually, it was determined that the critical value of gas content was 9.0 m3/t, which had been verified in practice. This provided a scientific prevention of coal and gas outburst and improved mining efficiency for Juji coal mine.
出处
《煤矿安全》
CAS
北大核心
2013年第10期162-165,共4页
Safety in Coal Mines
基金
国家科技支撑计划资助项目(2012BAK09B02-1)
河南省安全生产科技发展计划资助项目(H12-088)
关键词
区域预测
瓦斯含量
临界值
吸附特性
煤与瓦斯突出
regional prediction
gas content
critical value
adsorption characteristic
coal and gas outburst
