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Bulletin of Engineering Geology and the Environment
Published in: Bulletin of Engineering Geology and the Environment 3/2010

01-08-2010 | Original Paper

Deformation mechanism and stability evaluation for the left abutment slope of Jinping I hydropower station

Authors: Runqiu Huang, Feng Lin, Ming Yan

Published in: Bulletin of Engineering Geology and the Environment | Issue 3/2010

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Abstract

There are very complicated engineering geological conditions in the left abutment slope of the Jinping I hydropower station with the stress-release opening of fractures along existing faults and where lamprophyre veins are present. Prior to the excavation for the dam, the slope generally consisted of a thick marble mass between fault f5 and the free face. As a consequence of the removal of some of the marble to create the abutment, the stability of the slope would be reduced. The paper reports the stability assessments undertaken, based on engineering geological analysis and block theory and the results of the analysis of key rock masses under four conditions: natural, heavy-rain, earthquake and heavy-rain plus earthquake.
previous article Management of rock bursts during excavation of the deep tunnels in Jinping II Hydropower Station
next article Engineering geological problems related to high geo-stresses at the Jinping I Hydropower Station, Southwest China

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Literature
Huang Run-qiu (2000) Time dependent deformation of a high rock slope and its engineering-geological significance. J Eng Geol 8(2):148–153 (In Chinese)
Huang R, Yan M, Lin F (2005) Study on stability and supporting countermeasure of main engineering slopes of Jinping I Hydropower Station. Chengdu: State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology (in Chinese)
Institute of Chengdu Investigation and Design of National Electrical Power (2003) Feasibility study report of Jinping I Hydropower Station (3) Engineering geology (in Chinese)
Lin F, Huang R, Shi X (2007) Development and application of BAS3D-Block stability analysis software. J Chengdu Univ Technol(Sci Technol Ed) 34(1):82–85 (in Chinese)
Qi S, Wu F, Yan F, Lan H (2004) Mechanism of deep cracks in the left bank slope of Jinping first stage hydropower station. Eng Geol 73(1–2):129–144CrossRef
Wang S, Huang R, Li Y (1998) Significant engineering geologic research of Jinping hydropower station. Publishing Company of University of Electronic Science and Technology, Chengdu (in Chinese)
Zong R (1996) Numerical modeling on formation mechanism of deep fissures in the Pusiluogou dam site of Jinping I Hydropower Station. Des Hydroelectr Power Stn 12(1):73–79 (in Chinese)
Metadata
Title
Deformation mechanism and stability evaluation for the left abutment slope of Jinping I hydropower station
Authors
Runqiu Huang
Feng Lin
Ming Yan
Publication date
01-08-2010
Publisher
Springer-Verlag
Published in
Bulletin of Engineering Geology and the Environment / Issue 3/2010
Print ISSN: 1435-9529
Electronic ISSN: 1435-9537
DOI
https://doi.org/10.1007/s10064-010-0283-1

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