Estimating the excavation disturbed zone in the permanent shiplock slopes of the Three Gorges Project, China

doi:10.1016/S1365-1609(02)00015-1

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	Estimating the excavation disturbed zone in the permanent shiplock slopes of the Three Gorges Project, China
	Yue, ZQ; Sheng, Q; Zhou, H; Tham, LG; Lee, CF
刊名	INTERNATIONAL JOURNAL OF ROCK MECHANICS AND MINING SCIENCES
	2002
卷号	39 期号:2 页码:165-184
关键词	excavation disturbed zone shiplock cut slope excavation rock mechanics three gorges Yangtze River
ISSN号	1365-1609
DOI	10.1016/S1365-1609(02)00015-1
英文摘要	The stability and deformation of the permanent shiplock slopes are among the key issues in the design and construction of the Three Gorges Project. The permanent shiplock slopes, formed by deeply and steeply cutting into weathered and fresh granites, are 1607 m in length and 50-170 in in height, The disturbed zone in the permanent cut slopes induced by excavation is therefore one of the most important aspects in slope stability and deformation evaluation. A comprehensive investigation including non-linear finite element analysis. in-situ testing, instrumentation and monitoring, back analysis and rock mass quality rating has been carried out for the identification and evaluation of the excavation disturbed zone in the permanent cut slopes. The results of the investigation confirmed the existence of such an excavation disturbed zone in the permanent cut slopes. This zone is characterized by a considerable weakening in the mechanical properties of the rock mass. From the cut surface to the deeper region of the permanent cut slopes, the excavation disturbed zone can be further divided into a damaged zone, an affected zone and a slightly affected zone according to the extent of weakening in the rock mass. The damaged zone and the affected zone have thicknesses of 5-10 m and 1020 m. respectively. The exact pattern of the excavation disturbed zone is variable in different parts of the permanent cut slopes and are generally similar to that of the plastic zones estimated by using the non-linear finite element analysis. The present investigation has provided both factual data and insights for the stability and deformation evaluation of the permanent shiplock slopes. The approach and methodology developed in the paper can be used to assess similar excavation disturbed zones in other large cut slopes. (C) 2002 Elsevier Science 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:000176803500005
内容类型	期刊论文
源URL	[http://119.78.100.198/handle/2S6PX9GI/3103]
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
作者单位	Univ Hong Kong, Dept Engn; Yangtze River Sci Res Inst; Chinese Acad Sci, Inst Rock & Soil Mech
推荐引用方式 GB/T 7714	Yue, ZQ,Sheng, Q,Zhou, H,et al. Estimating the excavation disturbed zone in the permanent shiplock slopes of the Three Gorges Project, China[J]. INTERNATIONAL JOURNAL OF ROCK MECHANICS AND MINING SCIENCES,2002,39(2):165-184.
APA	Yue, ZQ,Sheng, Q,Zhou, H,Tham, LG,&Lee, CF.(2002).Estimating the excavation disturbed zone in the permanent shiplock slopes of the Three Gorges Project, China.INTERNATIONAL JOURNAL OF ROCK MECHANICS AND MINING SCIENCES,39(2),165-184.
MLA	Yue, ZQ,et al."Estimating the excavation disturbed zone in the permanent shiplock slopes of the Three Gorges Project, China".INTERNATIONAL JOURNAL OF ROCK MECHANICS AND MINING SCIENCES 39.2(2002):165-184.