狭窄型库区河道滑坡涌浪的形成及其传播规律

Formation and propagation regulation of water waves caused by the landslides in narrow reservoir's river channel

基于计算仿真工具FLOW3D,建立数值模型,以模拟狭窄型库区河道滑坡涌浪产生及其传播过程。将数值模拟结果与实验结果进行了对比,并对涌浪的形成过程进行了研究。利用无量纲分析方法和非线性回归方法,对滑块产生的初始最大涌浪高度和沿程传播涌浪高度衰减规律进行了公式拟合。研究结果表明:该数学模型能较好地模拟滑坡涌浪的形成过程,拟合的计算公式对狭窄型库区河道滑坡涌浪的产生及其传播具有较好的适用性和精确度,可以为狭窄型库区河道滑坡涌浪的预测提供理论依据。

Based on the computational simulation tools FLOW3D, a numerical model is set up to simulate the generation and propagation process of water waves caused by the landslides in narrow reservoir＇s river channel. The result shows that the water waves caused by the landslides and its propagation rule can be well simulated by the numerical model. On this basis,the formation process of water waves is studied. By using dimensionless analysis method and nonlinear regression method, the initial wave height and water waves propagation regulation along the channel are fit into formula. The results show that the formation process of water waves caused by the landslides can be well simulated by the mathematical model, good applicability and accuracy are kept for fitting calculation formula for water waves＇ production and propagation of narrow reservoir＇s river channel,which can he certain theoretical bases for water waves＇ prediction of narrow reservoir＇s river channel.