In Situ Observation of Hard Surrounding Rock Displacement at 2400-m-Deep Tunnels

doi:10.1007/s00603-017-1371-3

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	In Situ Observation of Hard Surrounding Rock Displacement at 2400-m-Deep Tunnels
	Guo, Hao-Sen 1; Feng, Xia-Ting1,2 ; Yao, Zhi-Bin 1; Li, Shao-Jun 2; Wu, Shi-Yong 3; Yang, Cheng-Xiang 1; Zhong, Shan 2
刊名	ROCK MECHANICS AND ROCK ENGINEERING
	2018
卷号	51 期号:3 页码:873-892
关键词	Deep hard-rock tunnel Displacement Time-dependent evolution Spatial distribution Fracture evolution
ISSN号	0723-2632
DOI	10.1007/s00603-017-1371-3
英文摘要	This paper presents the results of in situ investigation of the internal displacement of hard surrounding rock masses within deep tunnels at China's Jinping Underground Laboratory Phase II. The displacement evolution of the surrounding rock during the entire excavation processes was monitored continuously using pre-installed continuous-recording multi-point extensometers. The evolution of excavation-damaged zones and fractures in rock masses were also observed using acoustic velocity testing and digital borehole cameras, respectively. The results show four kinds of displacement behaviours of the hard surrounding rock masses during the excavation process. The displacement in the inner region of the surrounding rock was found to be greater than that of the rock masses near the tunnel's side walls in some excavation stages. This leads to a multi-modal distribution characteristic of internal displacement for hard surrounding rock masses within deep tunnels. A further analysis of the evolution information on the damages and fractures inside the surrounding rock masses reveals the effects of excavation disturbances and local geological conditions. This recognition can be used as the reference for excavation and supporting design and stability evaluations of hard-rock tunnels under high-stress conditions.
WOS研究方向	Engineering ; Geology
语种	英语
出版者	SPRINGER WIEN
WOS记录号	WOS:000426760700014
内容类型	期刊论文
源URL	[http://119.78.100.198/handle/2S6PX9GI/4240]
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.Northeastern Univ, Key Lab, Minist Educ Safe Min Deep Met Mines; 2.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn ; 3.Yalong River Hydropower Dev Co Ltd
推荐引用方式 GB/T 7714	Guo, Hao-Sen,Feng, Xia-Ting,Yao, Zhi-Bin,et al. In Situ Observation of Hard Surrounding Rock Displacement at 2400-m-Deep Tunnels[J]. ROCK MECHANICS AND ROCK ENGINEERING,2018,51(3):873-892.
APA	Guo, Hao-Sen.,Feng, Xia-Ting.,Yao, Zhi-Bin.,Li, Shao-Jun.,Wu, Shi-Yong.,...&Zhong, Shan.(2018).In Situ Observation of Hard Surrounding Rock Displacement at 2400-m-Deep Tunnels.ROCK MECHANICS AND ROCK ENGINEERING,51(3),873-892.
MLA	Guo, Hao-Sen,et al."In Situ Observation of Hard Surrounding Rock Displacement at 2400-m-Deep Tunnels".ROCK MECHANICS AND ROCK ENGINEERING 51.3(2018):873-892.