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Kinetic Friction Coefficient and Mass Movement Process of Large Rock Avalanches Triggered by the Wenchuan Earthquake
Language英语
Jiawen Zhou; Zhiman Su; Xingguo Yang
Corresponding AuthorJiawen Zhou
2013
Source PublicationInternational Symposium on Earthquake-Induced Landslides, Kiryu, Japan, 2012 ; Earthquake-Induced Landslides: Proceedings of the International Symposium on Earthquake-Induced Landslides, Kiryu, Japan, 2012
Pages521-528
Conference DateNovember 7-9, 2012
Conference PlaceKiryu, Japan
Funding OrganizationKeizo Ugai ; Hiroshi Yagi ; Akihiko Wakai
AbstractKinetic friction coefficient and mass movement process of large rock avalanches are very important to understand the dynamic mechanical characteristics during the sliding process. This paper presents a simple slab model based on energy conservation to determining the kinetic friction coefficient and sliding velocity during the mass movement process. The rock avalanche is assumed as a rigid, non-deformable object moving down slope and subject to the sole Coulomb friction for the presented slab model, and the kinetic friction coefficient is assumed as a certain value during the mass movement process. Five large rock avalanches triggered by the Wenchuan earthquake are selected as the case study examples, and simplified to two stages for these rock avalanches: acceleration stage and
accumulation stage, the kinetic friction coefficient and sliding velocity are back analysed by the presented simple slab model. Computed results show that, the kinetic friction coefficient for Donghekou, Woqian, Wenjiagou, Niumiangou and Xiejiadianzi rock avalanches are 0.235, 0.229, 0,306, 0,243 and 0.279, respectively; and the maximum sliding velocity are about 63 m/s, 59 m/s, 64 m/s, 67 m/s and 60 m/s, respectively.
KeywordRock Avalanches Wenchuan Earthquake Mass Movement Energy Conservation Kinetic Friction Coefficient Landslide Velocity
DOI10.1007/978-3-642-32238-9_55
ISBN978-3-642-32237-2
Indexed By其他
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Document Type会议论文
Identifierhttp://ir.imde.ac.cn/handle/131551/6621
Collection山地灾害与地表过程重点实验室
Corresponding AuthorJiawen Zhou
Recommended Citation
GB/T 7714
Jiawen Zhou,Zhiman Su,Xingguo Yang. Kinetic Friction Coefficient and Mass Movement Process of Large Rock Avalanches Triggered by the Wenchuan Earthquake[C],2013:521-528.
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