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

Content Provider	Springer Nature Link
Author	Huang, Runqiu Lin, Feng Yan, Ming
Copyright Year	2010
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.Des conditions très compliquées, relevant de la géologie de l’ingénieur, se présentent au niveau de l’appui en rive gauche de la station hydroélectrique de Jinping I avec, en conséquence du relâchement des contraintes, l’ouverture de fractures le long des failles présentes et au niveau de veines de lamprophyres. Avant les travaux d’excavation pour le barrage, la pente se présentait comme une masse rocheuse constituée de marbre, la faille f5 se présentant à ce niveau. En conséquence de l’excavation pour la création de l’appui, la stabilité de la pente pourrait être diminuée. L’article présente les analyses de stabilité réalisées, basées sur une étude de géologie de l’ingénieur et la théorie des blocs, et les conclusions sur la stabilité de masses rocheuses clés sous quatre conditions: conditions naturelles, sous fortes pluies, sous séisme et sous fortes pluies et séisme.
Starting Page	365
Ending Page	372
Page Count	8
File Format	PDF
ISSN	14359529
Journal	Bulletin of the International Association of Engineering Geology - Bulletin de l'Association Internationale de Géologie de l'Ingénieur
Volume Number	69
Issue Number	3
e-ISSN	14359537
Language	English
Publisher	Springer-Verlag
Publisher Date	2010-04-08
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Station hydroélectrique de Jinping I Fractures profondes Masses rocheuses déformées et fissurées Masses rocheuses clés Evaluation de stabilité Instrumentation Geoecology/Natural Processes Nature Conservation Geoengineering, Foundations, Hydraulics Applied Earth Sciences
Content Type	Text
Resource Type	Article
Subject	Geology Geotechnical Engineering and Engineering Geology

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