Failure analysis of thick interlayer from leaching of bedded salt caverns

doi:10.1016/i.ijrmms.2014.11.003

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

	Failure analysis of thick interlayer from leaching of bedded salt caverns
	Wang, Tongtao 1; Yang, Chunhe 1; Shi, Xilin 1; Ma, Hongling 1; Li, Yinping 1; Yang, Yun 2; Daemen, J. J. K.3
刊名	INTERNATIONAL JOURNAL OF ROCK MECHANICS AND MINING SCIENCES
	2015
卷号	73 页码:175-183
关键词	Bedded rock salt Interlayer Failure analysis Experiment Theoretical analysis Numerical simulation
ISSN号	1365-1609
DOI	10.1016/i.ijrmms.2014.11.003
英文摘要	A mathematical model is proposed to calculate the critical collapse span of a thick interlayer during the leaching of a gas storage salt cavern in bedded rock salt. In the proposed model the ratio of the height of the damaged zone to the interlayer thickness is introduced. This approach overcomes the negative effects on the calculation accuracy of the fact that the damaged rock does not fall off from the thick interlayer but is linked to it by contact forces. Brine immersion tests have been carried out to obtain the solution characteristics and the influence of brine immersion on tensile strength and on elastic modulus of interlayer samples of a salt formation from Yingcheng city, Hubei province, China. Experimental results show that these mechanical parameters decrease with immersion in brine and more so with decreasing brine density. To validate the proposed model, a 3D geomechanical model has been built of a salt cavern under construction in a bedded rock salt formation of Yingcheng city. The stresses and deformations of the thick interlayer obtained by the analytical solution and by the numerical simulation are compared, and show good agreement. The critical collapse span of the thick interlayer decreases greatly with a decrease of the ratio of damaged zone height to interlayer thickness and interlayer depth, increases with increasing tensile strength and thickness of interlayer, and is independent of the elastic modulus of the interlayer. The proposed model has been used in the planning of the leaching of the underground salt cavern gas storage of Yingcheng city, Hubei province, China. (C) 2014 Elsevier Ltd. All rights reserved.
WOS研究方向	Engineering ; Mining & Mineral Processing
语种	英语
出版者	PERGAMON-ELSEVIER SCIENCE LTD
WOS记录号	WOS:000347033000018
内容类型	期刊论文
源URL	[http://119.78.100.198/handle/2S6PX9GI/3663]
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.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn ; 2.Univ Tulsa, McDougall Sch Petroleum Engn; 3.Univ Nevada, Mackay Sch Earth Sci & Engn
推荐引用方式 GB/T 7714	Wang, Tongtao,Yang, Chunhe,Shi, Xilin,et al. Failure analysis of thick interlayer from leaching of bedded salt caverns[J]. INTERNATIONAL JOURNAL OF ROCK MECHANICS AND MINING SCIENCES,2015,73:175-183.
APA	Wang, Tongtao.,Yang, Chunhe.,Shi, Xilin.,Ma, Hongling.,Li, Yinping.,...&Daemen, J. J. K..(2015).Failure analysis of thick interlayer from leaching of bedded salt caverns.INTERNATIONAL JOURNAL OF ROCK MECHANICS AND MINING SCIENCES,73,175-183.
MLA	Wang, Tongtao,et al."Failure analysis of thick interlayer from leaching of bedded salt caverns".INTERNATIONAL JOURNAL OF ROCK MECHANICS AND MINING SCIENCES 73(2015):175-183.