KEY PROBLEMS OF FOUNDATION FAILURE,REINFORCEMENT AND STABILITY FOR SUPERHIGH ARCH DAMS
LIN Peng1,WANG Renkun2,KANG Shengzu1,ZHANG Haichao1,ZHOU Weiyuan1
(1. State Key Laboratory of Hydroscience and Engineering,Tsinghua University,Beijing 100084,China;2. HydroChina Chengdu Engineering Corporation,Chengdu,Sichuan 610072,China)
Abstract:Superhigh arch dams generally locate in complicated foundation. The failure,reinforcement and stability mechanism of foundation are facing with challenging original problems,such as:mechanical parameter and strength reasonable selection of jointed rocks;cracking problem in the heel and toe of dams;reinforcement measures for atypical faults and altered rock;grouting timing design for toe area of dam;anchorage force damage and nonlinear evaluation for integrity stability. In this paper,these key problems involved in the research methods,and reinforcing measures to carry on the discussion and analysis based on practical engineering. The micro-macro transfer method is proposed for coupling nonlinear analysis method. By employing this method,numerical simulation and experimental investigation on foundation failure,reinforcement and stability evaluation of superhigh arch dam need to further carry out for servicing dam design and construction.
中国水电工程顾问集团昆明勘测设计研究院. 澜沧江小湾水电站大坝工程招标设计报告[R]. 昆明:中国水电工程顾问集团昆明勘测设计研究院,2004.(HydroChina Kunming Engineering Corporation. Tender design report of Xiaowan hydroelectric project[R]. Kunming:HydroChina Kunming Engineering Corporation,2004.(in Chinese))
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