| 摘要 |
<p>A barge for receiving dredged materials and water comprising a hull defining a hold and overflow apparatus for discharging excess water from the hold; the overflow apparatus comprises a separate discharge passage having a discharge outlet below the water line of the barge, a port defining an overflow opening communicating the hull and the discharge passage at a fixed position above the predetermined level to which solids are to be collected in the hold and below the predetermined levels of water in the hold and in the discharge passage, and a control valve in the discharge outlet for regulating the water level in the discharge passage. The method of dredging comprises maintaining the water level as aforesaid to prevent aeration of overflowing water.</p> |
