库岸滑坡涌浪首浪高度计算方法研究

库岸滑坡涌浪不仅威胁航行船只的安全,还可能冲毁库区内的水工建筑物,有必要对其展开系统研究。而确定涌浪首浪高度是研究库岸滑坡涌浪的首要问题。通过对影响首浪相对高度因素的无量纲化处理,获知滑坡体入水的相对Froude数、滑坡体的相对高度和滑坡入水角度是影响首浪相对高度的主要因素;同时运用微波的波能理论和机械能守恒理论推导出一项新的首浪高度理论计算式,再利用滑坡涌浪模型试验数据对计算式进行拟合,并考虑计算式的实际运用和推广,最终得到一种计算库岸滑坡涌浪首浪高度的新方法。可为库区滑坡涌浪灾害提供预测基础。

Research on calculation method of first surge height of reservoir generated by landslide

Reservoir landslide-generated surge not only threats sailing ships, but also may destroy the hydraulic structures, so it is necessary to carry out systematic research on it. How to determine the first surge height generated by landslide is one of the most serious topics. Influential factors for the relative height of the first surge are nondimensionalized for analysis in this paper. It is concluded that the relative height of the first surge has relation with Froude number of initial form of the first surge, the relative height of landslide and the slope entry angle. Secondly, based on the microwave energy theory and conservation of mechanical energy, a new calculation formula of the relative height is carried out, and then combining with the experimental data, the formula is fitted. Taking the practical application and generalization of the calculation formula into account, a new method to calculate the relative height of landslide-generated surge is finally obtained.