The invention discloses an
underwater riprap foundation
bed tamping method based on a sand compaction
pile ship. The method comprises a sand compaction
pile ship transformation process and a tamping and leveling process. When the flow of transforming the sand compaction
pile ship is carried out, sand outlet guide
doors at the lower ends of the three pile sinking sleeves on the sand compaction pile ship are
cut off firstly; the lower ends of the three pile sinking sleeves are each connected with a bottom
flange; the three tamping plate devices are connected to the bottom flanges of the three pile sinking sleeves in a one-to-one correspondence mode, and each tamping plate device comprises a tamping sinking
pipe, a top
flange, a tamping sinking bottom plate, an
enclosure plate, a middle plate, a plurality of upper-layer stiffening plates and a plurality of lower-layer stiffening plates; when the tamping and leveling process is carried out,
underwater riprap operation on the lowest layer of the foundation
bed is carried out firstly, and then the transformed sand compaction pile ship is moved to a vibrating tamping position on the
underwater riprap surface of the lowest layer of the foundation
bed for tamping and leveling; and then the ship is moved to the next ship position for tamping and leveling of the next vibrating tamping position. The construction efficiency in the drop hammer tamping process of the underwater riprap foundation bed can be improved.