Constitutive representation and damage degree index for the layered rock mass excavation response in underground openings

doi:10.1016/j.tust.2017.01.016

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	Constitutive representation and damage degree index for the layered rock mass excavation response in underground openings
	Zhang, Chuan-Qing 1; Xu, Ding-Ping 1; Feng, Xia-Ting1 ; Chen, Dong-Fang 2; Fan, Qi-Xiang 3
刊名	TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY
	2017
卷号	64 页码:133-145
关键词	Elastic plastic model Damage degree index Transverse isotropy Layered rock mass
ISSN号	0886-7798
DOI	10.1016/j.tust.2017.01.016
英文摘要	In this study, a layered rock mass was regarded as a composite material, composed of interlayered intact rocks and bedding planes. Based on this assumption, we developed a transversely isotropic elastic-plastic model to describe the elastic response and post-peak failure behavior based on the Mohr-Coulomb and maximum tensile-stress criteria. Then, we proposed a damage index to estimate the damage degree of layered rock mass during excavation based on the developed model. The numerical simulation of the conventional uniaxial tests indicated that the failure mode and strength predictions of the model were in well agreement with the physical model test results. The index distribution was also shown to be more effective than the plastic zone distribution in identifying layered rock mass failure. The combined application of the mode and the index to assess the stability of the rock mass around the diversion tunnels at the Wudongde hydropower station in China showed that they could accurately estimate the locations and the depth of the potential collapses. Therefore, they are of significant practical value in the stability evaluation of layered rock mass surrounding underground openings.(C) 2017 Elsevier Ltd. All rights reserved.
WOS研究方向	Construction & Building Technology ; Engineering
语种	英语
出版者	PERGAMON-ELSEVIER SCIENCE LTD
WOS记录号	WOS:000396970200013
内容类型	期刊论文
源URL	[http://119.78.100.198/handle/2S6PX9GI/4035]
专题	岩土力学所知识全产出_期刊论文岩土力学所知识全产出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.Wuhan Univ Technol ; 3.China Three Gorges Corp
推荐引用方式 GB/T 7714	Zhang, Chuan-Qing,Xu, Ding-Ping,Feng, Xia-Ting,et al. Constitutive representation and damage degree index for the layered rock mass excavation response in underground openings[J]. TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY,2017,64:133-145.
APA	Zhang, Chuan-Qing,Xu, Ding-Ping,Feng, Xia-Ting,Chen, Dong-Fang,&Fan, Qi-Xiang.(2017).Constitutive representation and damage degree index for the layered rock mass excavation response in underground openings.TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY,64,133-145.
MLA	Zhang, Chuan-Qing,et al."Constitutive representation and damage degree index for the layered rock mass excavation response in underground openings".TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY 64(2017):133-145.