中文摘要：

为维护发达的水运系统,美国每年从水道港口水域中疏浚2.0亿m3左右的沉积物,由此引发的巨量疏浚物处置问题并不亚于我国。从疏浚物的处理现状出发,总结美国在疏浚物管理机制和处理技术等方面的主要进展,分析疏浚物的有益利用及其工程案例。调查表明,美国疏浚物管理体系权责清晰,美国陆军工程兵团（USACE）和环境保护署（USEPA）在疏浚物处置管理过程中扮演了重要角色,疏浚物多数以栖息地营造、湿地修复、海滩养护、农业和水产养殖等多种方式得到有益利用。我国目前正处在疏浚土有益利用的研究和探索阶段,美国疏浚物处置管理的成功经验值得借鉴。

英文摘要：

For the maintenance of the well-developed water transportation system, dredged materials of about 200 million m3 can be generated from waterways and harbors annually in the United States of America （USA）, and the disposal problem for the huge amount of dredged materials is not inferior to our country. Accordingly, proceeding from the current situation of dredged material disposal, the main development of dredged material management mechanism and disposal technology in USA is summarized. And the beneficial use of dredged material and its engineering cases are analyzed. The investigation shows that it has a dredged material management system with clear right and responsibility in USA, and both U. S. Army Corps of Engineers （USACE） and U. S. Environmental Protection Agency （USEPA） play a key role in the process of disposal management of dredged material. Most of the dredged materials can be used beneficially for the habitat development, wetland restoration, beach nourishment, agriculture and aquaculture. It is now in the phase of research and exploration for beneficial use of dredged material in China, and the successful experience of dredged material disposal management in USA should be worth learning.