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
	Feng, Xia-Ting1,2 ; Yao, Zhi-Bin 2; Li, Shao-Jun 1; Wu, Shi-Yong 3; Yang, Cheng-Xiang 2; Guo, Hao-Sen 2; Zhong, Shan 1
	2018
发表期刊	ROCK MECHANICS AND ROCK ENGINEERING
ISSN	0723-2632
卷号	51 期号:3 页码:873-892
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.
关键词	Deep hard-rock tunnel Displacement Time-dependent evolution Spatial distribution Fracture evolution
DOI	10.1007/s00603-017-1371-3
收录类别	SCI
语种	英语
WOS研究方向	Engineering ; Geology
WOS类目	Engineering, Geological ; Geosciences, Multidisciplinary
WOS记录号	WOS:000426760700014
出版者	SPRINGER WIEN
引用统计	被引频次：24[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	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.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn ; 2.Northeastern Univ, Key Lab, Minist Educ Safe Min Deep Met Mines; 3.Yalong River Hydropower Dev Co Ltd
第一作者单位	中科院武汉岩土力学所
推荐引用方式 GB/T 7714	Feng, Xia-Ting,Yao, Zhi-Bin,Li, Shao-Jun,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	Feng, Xia-Ting.,Yao, Zhi-Bin.,Li, Shao-Jun.,Wu, Shi-Yong.,Yang, Cheng-Xiang.,...&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	Feng, Xia-Ting,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.

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