煤矿安全2017，Vol.48Issue(9)：9-12,16,5.DOI:10.13347/j.cnki.mkaq.2017.09.003
型煤吸附不同气体变形规律研究
Study on Deformation Laws of Briquette Coal Under Adsorbing Different Gases
栗婧 1宋天宝 1王瑜敏 1谢雨佚 1洪焕翔1
作者信息
- 1. 中国矿业大学(北京)资源与安全工程学院,北京100083
- 折叠
摘要
Abstract
In order to explore the deformation characteristics of briquette coal adsobing CH4,N2 and CO2 under different pressure,this paper studies the deformation laws of briquette coal in the adsorption process of these three kinds of gas by using the adsorption-desorption test system for high-pressure gas coal rock.The results show that:the adsorption process for different gases of briquette coal under different pressure includes 3 stages,such as vacuum deformation,adsorption swelling deformation and desorption compression deformation,and the swelling deformation law of three kinds of gase is similar;the axial deformation and circumferential deformation are increasing gradually.The strain-time relation in the process of adsorption swelling deformation accords with the form of Langmuir equation.The adsorption expansion deformation of briquette coal to three kinds of gas under the same temperature and adsorption pressure is from big to small in order of CO2,CH4,N2.The annular strain of the three kinds of gas expansion and deformation is larger than the axial strain,and the deformation difference increases with the increase of the pressure in two directions.关键词
采矿工程/型煤变形规律/瓦斯吸附/吸附膨胀变形/解吸附压缩变形Key words
mining engineering/deformation laws of briquette coal/gas adsorption/adsorption swelling deformation/desorption compression deformation分类
矿业与冶金引用本文复制引用
栗婧,宋天宝,王瑜敏,谢雨佚,洪焕翔..型煤吸附不同气体变形规律研究[J].煤矿安全,2017,48(9):9-12,16,5.
