摘要
研究含瓦斯煤层所处的地球物理场对煤瓦斯吸附特性的影响 ,对煤矿安全开采、煤瓦斯的抽放利用以及煤瓦斯突出的预测预报具有重要意义。笔者总结了地球物理场对煤吸附瓦斯特性的影响 ,认为地电磁场对煤瓦斯吸附作用机理还有待进一步的研究。并重点探讨了在交变电场作用下煤的吸附特性。利用容量法对 3种不同煤样在交变电场作用下的吸附特性进行了实验研究。结果表明 :交变电场的作用 ,并没有改变煤表面的化学性质和物质成分 ,煤的吸附和解吸仍很好地遵从Langmuir方程和二常数经验公式 ,并且由于交变电场作用使煤的表面势能增大和焦耳热效应使煤体温度增高 ,从而减弱了煤的吸附能力 ,减缓了解吸过程。
It is very important to mine safe exploitation, gas drawing and predict of coal and gas outburst that adsorption characteristics of coal to gas in geophysical field are studied. Adsorption and desorption characteristics of coal to gas in geophysical field have been reviewed in detail, then it is obtained that adsorption characteristics of coal to gas in electromagnetic field should be further studied . Adsorption and desorption characteristics of coal to methane in alternating electric field (AEF) have been studied mainly. Adsorption characteristics of three coal samples in AEF have been studied by means of Volume Method. The result shows that chemical properties and matter constituent of coal surface are no changed , adsorption and desorption of the coal samples in AEF well accord with Langmuir equation and two constants empirical formula, and because coal potential energy is increased and coal temperature is raised caused by Joule heat effect , adsorption ability of coal is decreased, and the desorption process is slowed down in AEF.
出处
《重庆大学学报（自然科学版）》
EI
CAS
CSCD
2000年第5期78-81,共4页
Journal of Chongqing University
基金
国家教育部博士点基金资助项目 ( 95 6110 8)
关键词
地球物理声
煤
交变电场
吸附
解吸
瓦斯
geophysical field
coal
alternating electric field
adsorption
desorption
gas
