Abstract:
There is a large amount of dredged materials produced stably in the Yangtze estuary deepwater navigation channel. How to dispose these dredged materials is a major technical problem in the field of port and waterway engineering. Using lots of engineering field data and proceeding from the basic features of the dredged material of the Yangtze estuary waterway, the current situation of disposal modes of dredged material is analyzed and compared, and a future development mode of dredged material under the new situation is presented. Major studies have shown that the dredging disposal modes at different stages of the Yangtze estuary deepwater channel regulation project can basically adapt to the characteristics of dredged materials under the conditions of corresponding dredging depths, and generally speaking, the dredged materials are still mainly dumped to the marine dumping sites. With the new situations such as the limitation of ocean dumping sites, the increasing demand of sediment resources supply and the erosion threat to the Yangtze estuary tidal wetlands, the principle should be followed that dredged material be used more and discarded less. And there are many kinds of ways of beneficial use of dredged materials including the blowing of dredgerfill to reclaim land and the feeding of sand for wetland protection, which will be the future development direction of dredged material disposal in the Yangtze estuary deepwater navigation channel.