BUCKET FOR REMOVING SEDIMENT

PURPOSE:To collect sediment in a stabilizing solution, by providing a bucket comprising an outer cylinder part, a tapered cylinder part, which is extended upward in a manner to be bevelled from the bottom of the outer cylinder toward the axis of the outer cylinder, and a valve member which is located to the opening, on the tapered off side, of the tapered cylinder. CONSTITUTION:A bucket 1 comprises an outer cylinder part 2b which has size smaller than that of an excavated hole, a tapered part 3 which is extended in a manner to be bevelled from a bottom 2a of the outer cylinder part 2b toward the axis of the outer cylinder part 2b, and a valve member 4 which is located to an opening 3a, on the tapered off side, of the tapered part 3. The bucket 1 is inserted into an excavated hole down to a position in the vicinity of an excavated hole bottom by means of a wire 6, and vertically reciprocated to cause sediment, accumulated on the excavated hole bottom, to float in a stabilizing solution. When, with this state, the bucket 1 is lowered, a stabilizing solution containing the sediment pushes upward the valve member 4. When the bucket is raised, the valve member 4 is closed, and the stabilizing solution containing the sediment is collected between the outer cylinder part 2b and the tapered cylinder part 3.