To provide a sediment hopper capable of consolidating and discharging supplied sediment.

This sediment hopper has a hopper body 40 and a closing member 47, and the hopper body 40 is freely movable for the closing member 47. By this hopper, sediment after thrown into the hopper body 40 moves toward the closing member 47, thereby consolidating the sediment. When a discharge port 46 is opened at an earth removal gate 49 in this state, the consolidated sediment is discharged.