【摘要】 本文采用半经验及数值方法求解泄洪情况下的尾水河床水流条件,用Ackers和White方法计算不同粒径的输沙率及河床变形,并考虑了床面级配的变化.该方法适合于强回流情况下推移质运动引起的河床变形计算.更多还原

【Abstract】 A two-dimensional numerical model with semi-empirical way is deve- loped for simulating the flood discharge downstream of spillway of the dam in this paper.Ackers and White’s method is used to calculate transport rate of bed load and the river bed deformation. Meanwhile; the changes of the composition of the bed materials are taken into account. Numerical results are compared with laboratory experiments. The model is suitable to estimate bed deformation of tail channel below spillway dam caused by bed load transport.更多还原