Influence of relative humidity on the non-linear failure and stability of gypsum mines

doi:10.1080/19648189.2020.1715850

	Influence of relative humidity on the non-linear failure and stability of gypsum mines
	Xia, Kaizong 2,3; Chen, Congxin 2,3; Yang, Kuoyu 2,3; Sun, Chaoyi 2,3; Liu, Xiumin 2,3; Zhou, Yichao 1
刊名	EUROPEAN JOURNAL OF ENVIRONMENTAL AND CIVIL ENGINEERING
	2020-01-21
页码	26
关键词	Catastrophe theory catastrophic failure gypsum pillar-roof bed relative humidity safety factor underground mine
ISSN号	1964-8189
DOI	10.1080/19648189.2020.1715850
英文摘要	A cusp catastrophic model was developed for the pillar-and-roof support system based on the simplified mechanical model of the support system and the improved stress-strain relationship for gypsum. Then, the catastrophic failure mechanism was investigated for the gypsum support system by considering the influence of relative humidity (RH). Meanwhile, the failure criterion for catastrophic instability in the gypsum support system was deduced, and the expression for the safety factor of the pillars was improved by considering the shape and size effects on the strength of gypsum. The results indicate that the RH exerts a significant influence on the catastrophic control parameters for the gypsum support system: with the increase of the RH, the catastrophic control parameters are more prone to cross the bifurcation set and meet the conditions of catastrophic instability for this system. For the input parameters used in the failure criterion, the RH mainly degrades the uniaxial compression strength and then causes catastrophic instability. According to the stability analysis for the mined-out area of the Jingmen Gypsum mines, the lower limit (about 1.60) of the value of factor relating the size effect to the uniaxial compression strength was obtained.
资助项目	General Project of the National Natural Science Foundation of China[51274188]
WOS研究方向	Engineering
语种	英语
出版者	TAYLOR & FRANCIS LTD
WOS记录号	WOS:000509173900001
内容类型	期刊论文
源URL	[http://119.78.100.198/handle/2S6PX9GI/23346]
专题	中科院武汉岩土力学所
通讯作者	Xia, Kaizong; Yang, Kuoyu
作者单位	1.Changsha Univ Sci & Technol, Sch Civil Engn, Changsha, Peoples R China 2.Univ Chinese Acad Sci, Beijing, Peoples R China 3.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan, Hubei, Peoples R China
推荐引用方式 GB/T 7714	Xia, Kaizong,Chen, Congxin,Yang, Kuoyu,et al. Influence of relative humidity on the non-linear failure and stability of gypsum mines[J]. EUROPEAN JOURNAL OF ENVIRONMENTAL AND CIVIL ENGINEERING,2020:26.
APA	Xia, Kaizong,Chen, Congxin,Yang, Kuoyu,Sun, Chaoyi,Liu, Xiumin,&Zhou, Yichao.(2020).Influence of relative humidity on the non-linear failure and stability of gypsum mines.EUROPEAN JOURNAL OF ENVIRONMENTAL AND CIVIL ENGINEERING,26.
MLA	Xia, Kaizong,et al."Influence of relative humidity on the non-linear failure and stability of gypsum mines".EUROPEAN JOURNAL OF ENVIRONMENTAL AND CIVIL ENGINEERING (2020):26.