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Application of Spatiotemporal Hybrid Model of Deformation in Safety Monitoring of High Arch Dams: A Case Study

Authors
  • Gu, Chongshi1, 2, 3
  • Fu, Xiao1, 2, 3
  • Shao, Chenfei1, 2, 3
  • Shi, Zhongwen1, 2, 3
  • Su, Huaizhi1, 2, 3
  • 1 (H.S.)
  • 2 College of Water Conservancy and Hydropower Engineering, Hohai University, Nanjing 210098, China
  • 3 National Engineering Research Center of Water Resources Efficient Utilization and Engineering Safety, Hohai University, Nanjing 210098, China
Type
Published Article
Journal
International Journal of Environmental Research and Public Health
Publisher
MDPI AG
Publication Date
Jan 02, 2020
Volume
17
Issue
1
Identifiers
DOI: 10.3390/ijerph17010319
PMID: 31906513
PMCID: PMC6981373
Source
PubMed Central
Keywords
License
Green

Abstract

As an important feature, deformation analysis is of great significance to ensure the safety and stability of arch dam operation. In this paper, Jinping-I arch dam with a height of 305 m, which is the highest dam in the world, is taken as the research object. The deformation data representation method is analyzed, and the processing method of deformation spatiotemporal data is discussed. A deformation hybrid model is established, in which the hydraulic component is calculated by the finite element method, and other components are still calculated by the statistical model method. Since the relationship among the measuring points is not taken into account and the overall situation cannot be fully reflected in the hybrid model, a spatiotemporal hybrid model is proposed. The measured values and coordinates of all the typical points with pendulums of the arch dam are included in one spatiotemporal hybrid model, which is feasible, convenient, and accurate. The model can predict the deformation of any position on the arch dam. This is of great significance for real-time monitoring of deformation and stability of Jinping-I arch dam and ensuring its operation safety.

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