Volume 27 Issue 增刊I
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ZHANG Xiao, ZHANG Jian-hai, ZHOU Zhong, RAO Hong-ling. THE STUDY OF THE HIGH ARCH DAM EXCEPTIONALLY LARGE FOUNDATION CUSHION STABILITY OF JINPING 1 HYDROPOWER PROJECT[J]. Engineering Mechanics, 2010, 27(增刊I): 232-235,.
Citation: ZHANG Xiao, ZHANG Jian-hai, ZHOU Zhong, RAO Hong-ling. THE STUDY OF THE HIGH ARCH DAM EXCEPTIONALLY LARGE FOUNDATION CUSHION STABILITY OF JINPING 1 HYDROPOWER PROJECT[J]. Engineering Mechanics, 2010, 27(增刊I): 232-235,.
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THE STUDY OF THE HIGH ARCH DAM EXCEPTIONALLY LARGE FOUNDATION CUSHION STABILITY OF JINPING 1 HYDROPOWER PROJECT

  • (1. State Key Laboratory of Hydraulics and Mountain River Engineering, College of Water Resource and Hydro-Power, Sichuan University, Chengdu, Sichuan 610065, China; 2. Chengdu Hydroelectric Investigation & Design Institute of CHECC, Chengdu, Sichuan 610072, China)

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  • Received Date: December 31, 1899
  • Revised Date: December 31, 1899
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  • The exceptionally large foundation cushion for the high arch dam of Jinping 1 hydropower project is 155m in height. The multiple lattice method was used to search for any potential slide plane and to calculate safety factors against sliding of No.1―No.12 sliding blocks, which were concreted in stages and under the normal storage level respectively. The calculation results indicate that the safety factor against sliding of the foundation cushion varies from 1.71 to 2.33 when it is concreted in stages while that under the normal storage level increase to 1.91―2.65 thanks to thrust action of the spandrels, satisfying the stability requirement.
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