丁坝是河道及航道整治工程中一种常用的重要建筑物，具有控制河势、保护岸滩、束水攻沙及壅高水位等多种功能。
The spur-dike is a common important building which is usually used in river course improvement projects , controlling river trend , bend protection , beam attack sand and high water levels .
束水攻沙