潮流波浪作用下丁坝坝头概化模型的冲刷试验

General scouring model test of dike′s head under tidal currents and waves

根据窦国仁波浪潮流共同作用下的全沙模型相似理论,设计了长江口深水航道北槽概化物理模型.进行了清水潮流和潮流波浪、浑水潮流波浪作用下的 4条丁坝坝头冲刷试验,给出了各丁坝坝头冲刷坑深度随时间的变化,对比了 3种试验条件下丁坝坝头冲刷坑的深度.

According to Dou Guoren′s similarity theory of total sediment transport modeling for estuarine and coastal regions, a generalized physical model of the north-trough of the Yangtze River Estuary deep channel is designed. Based on the local scouring test of the dike′s head under the action of clear tidal currents, of both tidal currents and waves, and of both muddy tidal currents and waves, variations of the scoured pit′s depth at each dike′s head with time, and the scoured pit′s depths with three experimental conditions are compared.