Volume 9 Issue 3
Jul.  2016
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Article Navigation >  Water Science and Engineering  > 2016  >  9(3): 240-248
Shi-yong Wu, Wei Cao, Jiang Zheng. 2016: Analysis of working behavior of Jinping-I Arch Dam during initial impoundment. Water Science and Engineering, 9(3): 240-248. doi: 10.1016/j.wse.2016.11.001
Citation: Shi-yong Wu, Wei Cao, Jiang Zheng. 2016: Analysis of working behavior of Jinping-I Arch Dam during initial impoundment. Water Science and Engineering, 9(3): 240-248. doi: 10.1016/j.wse.2016.11.001
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Analysis of working behavior of Jinping-I Arch Dam during initial impoundment

doi: 10.1016/j.wse.2016.11.001

  • Yalong River Hydropower Development Company, Ltd., Chengdu 610051, China

Funds:  This work was supported by the National Key Technology Support Program (Grant No. 2013BAB05B05).
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  • Corresponding author: Shi-yong Wu
  • Received Date: 2016-04-07
  • Rev Recd Date: 2016-07-08
    Abstract
  • To study the stress, deformation, and seepage pressure during the initial impoundment of the Jinping-I Arch Dam, monitoring analysis and numerical calculation were comprehensively used in the dam behavior analysis, focusing on the working behavior of the dam during the late period of the initial impoundment by the end of November 2014. The numerical calculation was performed based on feedback analysis of the deformation and stress of the arch dam by inversion of the elastic moduli (E) of the dam body and foundation, in which a three-dimensional finite element model for linear elastic material of the arch dam was developed. Results show that, the main monitoring indices presented insignificant changes in the late period of the initial impoundment, and the results of feedback analysis were consistent with monitoring results. Analysis results also show that the deformations of the dam body and dam foundation were within the design range, the dam stress distributions were normal with the values lower than the design control criteria, and the seepage flows through the dam body and dam foundation were lower than the design drainage capacity of the deep-well pump house, demonstrating that the working behavior of the Jinping-I Arch Dam was in a good condition, and the initial impoundment was successfully completed. The results about the working behavior analysis of the Jinping-I hydropower project during the initial impoundment can provide references for safe operation of similar projects.

     

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