Abstract
In view of some courses of the time-varying characteristics processing in the analysis of dam deformation, the paper proposes a new method to analyze the dam time-varying characteristic based on the empirical mode decomposition and phase space reconstruction theory. First of all, to reduce the influences on the traditional statistical model from human factors and assure the analysis accuracy, response variables of the time-varying characteristic are obtained by the way of the empirical mode decomposition; and then, a phase plane of those variables is reconstructed to investigate their processing rules. These methods have already been applied to an actual project and the results showed that data interpretation with the assists of empirical mode decomposition and phase space reconstruction is effective in analyzing the perturbations of response variables, explicit in reflecting the entire development process, and valid for obtaining the evolution rules of the time-varying characteristic. This methodology is a powerful technical support for people to further master the rules of dam operation.
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This work was supported by the National Science and Technology Support Plan of China (Grant Nos. 2006BAC14B03, 2008BAB29B06, 2008BAB29B03), National Natural Science Foundation of China (Grant Nos. 50909041, 50879024, 50809025), Science and Technology Support Project of China Hydropower Engineering Consulting Group Co. (Grant No. CHC-KJ-2007-02), Special Scientific Research Fund of Doctor Subjects of Colleges and Universities (Grant No. 20070294023), Jiangsu Province 333Training High-level Talents Projects (Grant Nos. 2017-B08037).
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Zhang, Z., Gu, C., Bao, T. et al. Application analysis of empirical mode decomposition and phase space reconstruction in dam time-varying characteristic. Sci. China Technol. Sci. 53, 1711–1716 (2010). https://doi.org/10.1007/s11431-010-3098-1
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DOI: https://doi.org/10.1007/s11431-010-3098-1