State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering, Hohai University, Nanjing 210098, China.
College of Water Conservancy and Hydropower Engineering, Hohai University, Nanjing 210098, China.
Int J Environ Res Public Health. 2020 Jan 2;17(1):319. doi: 10.3390/ijerph17010319.
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.
作为一个重要特征，变形分析对于确保拱坝运行的安全性和稳定性具有重要意义。本文以世界第一高拱坝——锦屏一级拱坝为研究对象，分析了变形数据表示方法，讨论了变形时空数据的处理方法。建立了一种变形混合模型，其中水力分量采用有限元法计算，其他分量仍采用统计模型法计算。由于混合模型未考虑测点之间的关系，不能全面反映整体情况，因此提出了一种时空混合模型。该模型将拱坝所有典型摆式观测点的实测值和坐标包含在一个时空混合模型中，具有可行性、方便性和准确性。该模型可以预测拱坝任何位置的变形，这对于锦屏一级拱坝的实时变形监测和稳定性保证以及运行安全具有重要意义。
