| 摘要 |
PURPOSE:To raise the efficiency of operations by leveling continuously rubble by means of a device consisting of a leveling stone supply chute having a hopper with a float on its upper part and a bottom plate having a leveling plate and a vibrator. CONSTITUTION:A reference mound (c) is formed, and then a leveler for stones is hung down from water surface (a) and landed on the mound (c). Stones (f) are supplied to a hopper 1 from a gut ship and discharged to unleveled portion (d) of the bottom under water through a stone supply chute 3 from the hopper 1, during which period the bottom plate 7 is vibrated by a vibrator 8 and the leveler is at the same time moved forwards. When the operations are made on sloped ground, the angle of the bottom is adjusted by using a slope-correcting jack 10 to keep the leveler horizontal. |
