长江口深水航道疏浚土处理现状及未来展望

长江口深水航道疏浚土产生量大，但如何对其进行更好地处理是水运工程领域的一大技术难题.利用大量工程现场资料，从长江口深水航道疏浚土的基本特性出发，对比分析了疏浚土处理现状，展望了疏浚土处理的发展模式.研究表明，长江口深水航道各工程阶段的疏浚土处理模式基本适应了不同维护水深条件下的疏浚土特点，总体仍以海洋倾倒为主.但在海洋倾倒区日渐严格控制、泥沙资源供需关系日趋紧张以及滩涂湿地面临侵蚀威胁等诸多新情势下，长江口疏浚土应遵循多用少抛的处理原则，利用疏浚土吹填造地、湿地保护等多途径处置将是未来长江口深水航道疏浚土处理的发展方向.

Current situation and future prospect of dredged material disposal in the Yangtze estuary deepwater navigation channel

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.