A Modified Creep Model for Cyclic Characterization of Rock Salt Considering the Effects of the Mean Stress, Half-Amplitude and Cycle Period

doi:10.1007/s00603-020-02097-0

	A Modified Creep Model for Cyclic Characterization of Rock Salt Considering the Effects of the Mean Stress, Half-Amplitude and Cycle Period
	Han, Yue 3; Ma, Hongling 2; Yang, Chunhe 2,3; Zhang, Nan 3; Daemen, J. J. K.1
刊名	ROCK MECHANICS AND ROCK ENGINEERING
	2020-04-05
页码	14
关键词	Rock salt CAES Deformation behavior Mean stress Half-amplitude Cycle period Cyclic creep model
ISSN号	0723-2632
DOI	10.1007/s00603-020-02097-0
英文摘要	The fluctuation of the operation pressure during injection and withdrawal is a key factor affecting the long-term stability of surrounding rock in a compressed air energy storage (CAES) cavern. To assess the mechanical behavior of rock salt under different pressure fluctuations and to optimize the operating parameters of CAES caverns, uniaxial cyclic loading tests under the sine condition were carried out by changing three cycle parameters, namely the mean stress, half-amplitude and cycle period. The test results show that the deformation behavior during cyclic loading tests can be divided into transient, steady, and accelerated stages, which is similar to that of creep tests. The strain and steady strain rates increase with increasing cycle parameters, showing a nonlinear deformation property of rock salt under cyclic loading. To describe the nonlinear response that cannot be captured by the Burgers model, a stiffness scaling factor is proposed based on the test results. A modified cyclic creep model of rock salt is established by introducing this stiffness scaling factor into the conventional Burgers creep model. The agreement with the experimental data indicates that the modified cyclic creep model can accurately reflect the influence of the three cyclic parameters on the deformation properties of rock salt.
资助项目	National Natural Science Foundation of China[5187041724]
WOS研究方向	Engineering ; Geology
语种	英语
出版者	SPRINGER WIEN
WOS记录号	WOS:000524164800001
内容类型	期刊论文
源URL	[http://119.78.100.198/handle/2S6PX9GI/23731]
专题	中科院武汉岩土力学所
通讯作者	Han, Yue; Ma, Hongling
作者单位	1.Univ Nevada, Mackay Sch Earth Sci & Engn, Reno, NV 89557 USA 2.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Hubei, Peoples R China 3.Chongqing Univ, State Key Lab Coal Mine Dynam Disaster & Control, Chongqing 400044, Peoples R China
推荐引用方式 GB/T 7714	Han, Yue,Ma, Hongling,Yang, Chunhe,et al. A Modified Creep Model for Cyclic Characterization of Rock Salt Considering the Effects of the Mean Stress, Half-Amplitude and Cycle Period[J]. ROCK MECHANICS AND ROCK ENGINEERING,2020:14.
APA	Han, Yue,Ma, Hongling,Yang, Chunhe,Zhang, Nan,&Daemen, J. J. K..(2020).A Modified Creep Model for Cyclic Characterization of Rock Salt Considering the Effects of the Mean Stress, Half-Amplitude and Cycle Period.ROCK MECHANICS AND ROCK ENGINEERING,14.
MLA	Han, Yue,et al."A Modified Creep Model for Cyclic Characterization of Rock Salt Considering the Effects of the Mean Stress, Half-Amplitude and Cycle Period".ROCK MECHANICS AND ROCK ENGINEERING (2020):14.