由于土质河床抗冲能力差、地基压缩性大、承载能力低、易液化等特点,平原地区的许多水工建筑物常因遭受水流冲刷而破坏,其中,特别以水闸最为显著。水闸在提闸放水时具有很大的动能,极易构成闸下冲刷。因此,应采取积极有效的消能防冲措施,以减少水流对水闸安全的威胁。 Due to the poor impact resistance of soil bed, large foundation compressibility, low carrying capacity and easy liquefaction, many hydraulic structures in the plain are often damaged by water scour. Among them, the most notable is the sluice. Sluice gates have a lot of kinetic energy when they lift water, which makes it easy to form a flush under the gates. Therefore, positive and effective energy dissipation measures should be taken to reduce the threat of water flow to floodgate safety.