Based on the riverbed evolution analyses of the downstream reach of oujiang estuary and physical model test of eight types of regulation projects , an estimation method for nondeposit velocity satisfying channel depth is presented under fixed bed model test condition 摘要通過對甌江口外段河床演變分析,以及8種航道治理工程的物理模型試驗,提出了在定床試驗條件下滿足航道水深所需的不淤流速的估算方法。
By use of the morphological coefficients of estuarine riverbed and the relevant data of the north channel of the yangtze river estuary , the widening rate of the regulation line of the north deep - water channel of the yangtze river estuary is calculated , and the calculation result is in agreement with that of the fixed bed model test 利用已有的河口河床形態系數及長江口北槽的有關數據,估算了長江口北槽深水航道治導線的放寬率,且與定床物理模型試驗值基本相符。