| 摘要 |
PURPOSE:To perform a safe and efficient work, by a method wherein a levelling plate is movably located along the sea bottom between the legs of a barge, the upper opening of a rubble-mound feed pipe is positioned on the barge, and the lower end of the openings is positioned to the front of a levelling plate. CONSTITUTION:When rubble-mound in a rubble-mound containing section on a burge 1 is grasped by means of a crab 4a of a crane 4 to charge it into a hopper 7, the rubble-mound is dropped in a rubble-mound feed pipe 6, and is dropped in a levelling plate 8 through a vertical pipe 6a and a slanted pipe 6b. Simultaneously, with a winch 12 driven, a wire 9 is wound, the levelling plate 8 is moved, and a truck 5 is travelled in linkage with the movement of the levelling plate 8. This causes the rubble-mound, dropped in the levelling plate 8, to flow in recess parts on the sea bottom to level the sea bottom. |
