山区河道型水库滑坡涌浪首浪波能分析

以长江三峡库区典型弯曲河道为原型,将其概化成弯曲河道型水库模型,从滑坡的几何尺寸、内部散体构造、物理指标等方面对滑坡体进行模拟。以河道水深、滑面角度、滑体厚度、滑体宽度、临水状态、入水处河床坡度为试验参数,从凸岸滑坡入水开展物理模型试验。分析初始涌浪形态特征,确定首浪波高,通过波高等值线图分析首浪波峰线的分布特征。以波能流为主线,运用波能理论,分析波动能、波势能和压力做功,从理论上推导出首浪总波能公式。

Study on head wave energy of landslide surge in mountainous river reservoir

Taking the typical curve channels in the Yangtze River Three Gorges Reservoir area as the prototype,we conceptualize it into a model of curve river-type reservoir to simulate the landslide mass in terms of the geometric size of the landslide,the structure of the inner granular structure and the physical indicators. Taking the water depth,angle of slipping surface,thickness and width of the landslide mass,by-water status and the slope of the riverbed at the site where the landslide mass entered the water as the testing parameters,and letting the landslide mass enter the water from the inner bank,we carry out physical model tests to analyze the features of the head wave’s form,determine the head wave height,and explore the distribution of the head wave’s line of crest through the contour map. Following the flow of the wave energy and based on the wave energy theory,we analyze the wave’s kinetic energy,potential energy and work of pressure,and deduce the total wave energy formula theoretically.