Effects of gas adsorption on mechanical properties and erosion mechanism of coal

doi:10.1016/j.jngse.2016.02.039

CORC > 武汉岩土力学研究所 > 中科院武汉岩土力学所 > 岩土力学所知识全产出 > 期刊论文

	Effects of gas adsorption on mechanical properties and erosion mechanism of coal
	Wang, Enyuan 1; Hu, Shaobin 2; Li, Xiaochun2 ; Bai, Bing 2
刊名	JOURNAL OF NATURAL GAS SCIENCE AND ENGINEERING
	2016
卷号	30 页码:531-538
关键词	Gas adsorption Coal Deformation and failure Erosion
ISSN号	1875-5100
DOI	10.1016/j.jngse.2016.02.039
英文摘要	In order to study coal deformation and fractured mechanism under pore gas action, we chose gases N-2 and CH4 as pore fluids, and carried out triaxial compression test of gas-bearing coal. To further explore the effects of gas erosion on coal deformation and failure, we tested the deformation and rapture process of coal during gas adsorption equilibrium under fixed axial load and confining pressure. The results showed that gas adsorption decreases coal's solid surface energy and lowers coal's compressive strength, leading to larger plastic deformation in coal and final rupture instability. From the physicochemical angle, we quantified the adsorbed gas erosion effects of coal based on both Griffith crack extension theory and Mohr Columb strength criterion, explored the mechanical characteristics and erosion damage process of gas containing coals and put forwarded their mathematical models. These models can describe the experimental phenomena fairly. (C) 2016 Elsevier B.V. All rights reserved.
WOS研究方向	Energy & Fuels ; Engineering
语种	英语
出版者	ELSEVIER SCI LTD
WOS记录号	WOS:000375357600049
内容类型	期刊论文
源URL	[http://119.78.100.198/handle/2S6PX9GI/3843]
专题	岩土力学所知识全产出_期刊论文国家重点实验室知识产出_期刊论文
作者单位	1.China Univ Min Technol, Sch Safety Engn 2.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn ;
推荐引用方式 GB/T 7714	Wang, Enyuan,Hu, Shaobin,Li, Xiaochun,et al. Effects of gas adsorption on mechanical properties and erosion mechanism of coal[J]. JOURNAL OF NATURAL GAS SCIENCE AND ENGINEERING,2016,30:531-538.
APA	Wang, Enyuan,Hu, Shaobin,Li, Xiaochun,&Bai, Bing.(2016).Effects of gas adsorption on mechanical properties and erosion mechanism of coal.JOURNAL OF NATURAL GAS SCIENCE AND ENGINEERING,30,531-538.
MLA	Wang, Enyuan,et al."Effects of gas adsorption on mechanical properties and erosion mechanism of coal".JOURNAL OF NATURAL GAS SCIENCE AND ENGINEERING 30(2016):531-538.