摘要
为了研究深部矿井瓦斯赋存非线性特征,提出了瓦斯含量临界深度的概念,它是地层压力和地层温度对煤体吸附性综合作用的结果,而这2个影响因素的影响效果是相反的。以平煤十矿为例,测定瓦斯吸附常数和瓦斯含量参数,建立深部矿井瓦斯赋存规律模型,分析发现平煤十矿戊9煤层在920 m处瓦斯吸附常数a值相比875 m处不升反降,己组煤层瓦斯含量在910 m左右随着埋深增加而不再明显增大,甚至略微减小,结果表明深部矿井瓦斯赋存具有非线性特征,即深部矿井在一定深度存在瓦斯含量临界深度。
In order to study the gas occurrence nonlinear characteristics of deep mine,the critical depth concept of gas content which is the result of two opposite factors comprehensive effect on coal body adsorption is proposed. The opposite factors are formation pressure and formation temperature. In No. 10 Coal Mine of Pingdingshang Tian＇an Coal Industry,we determine the parameters of gas adsorption constant parameters and gas content,establish the model of gas occurrence law in deep mine for demonstration. The analysis find that the gas adsorptive a value of Wu9 coal at 920 m deep is bigger than that of 875 m,and the gas content of Ji15 coal no longer increases obviously with burial depth at about 910 m,but even slightly reduced. The results show that the gas occurrence of the deep mine has nonlinear characteristics that exists a critical depth of gas content at certain depth of deep mine.
出处
《煤矿安全》
CAS
北大核心
2015年第10期193-195,共3页
Safety in Coal Mines
基金
"十二五"国家科技支撑计划资助项目(2012BAK04B00)
财政部重大技术创新及产业化资助项目(2011ZD001)
