| 摘要 |
The invention relates to a dredging apparatus 1. Apparatus 1 has a sledge 10 with cables 11 attached to the tow vessel X. The sled has one or more one scraper 13,14 projecting from the bottom of the sledge to scrape along a water bed. Mixing means is provided to mix scrapings from the/each blade from the water bed with the adjacent water. The mixing may be provided by water jets 14C, 13C which spray into the scraped material. The mixing device may include a baffle plate 17 with a curved surface to apply a downward force to the device and increase the turbulence in the surrounding water to aid the mixing of material ploughed from the water bed. In use the vessel tows the sledge along the water bed with the/each scraper scraping the water bed with scrapings dissipating into the adjacent water. |
