channel scour 河床冲刷作用 ; 河道冲刷
natural scour of channel 河槽天然冲刷
river channel scour 河道冲刷
scour outlet channel 冲淤渠道 ; 冲砂泄水道
river channel scour and fill 河道冲淤
main channel scour 主槽冲刷
Because the pipeline diameter in platform is one third of that in tidal channel, so the limit scour length is less.
而平台区由于设计管径仅为潮汐通道区的三分之一，其极限冲刷长度远小于潮汐通道区。
The main channel bed will scour if sediment amount from tributary debris is less than that the main stream can carry and the river evolution exhibits the characteristic of mountainous rivers.
当支沟泥石流输入主河的泥沙量小于主河的输沙量时，主河河床将下切，并逐渐恢复山区性河流的特征。
The depth of river channel scour is calculated by the scour rate and scour time.
河道冲刷深度主要决定于冲刷率和冲刷历时。
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