Abstract: As one of the world’s greatest hydro projects, the Three Gorges Project enjoys huge navigation benefits. With the steady growth of national economy and implementation of Yangtze River Golden Waterway, the cargo transportation volume through the Three Gorges Dam has increased steadily and exceeded the designed lock capacity of 100 million tons since 2011, and reached annual average of 120 million tons between 2013—2015, an excess of 20% over the designed capacity, which shows that the construction of a new channel through the Gorges is a must. This present paper briefly introduces the progress of that new channel, including the new lock construction scheme, expansion revamp of Gezhouba Dam, and major technical difficulties.

Key words: Three Gorges new channel, layout of navigation locks, channel improvement, expansion revamp

摘要： 三峡工程是世界上最伟大的水利工程之一，航运效益巨大，随着国民经济持续增长和长江黄金水道建设的实施，三峡过坝货运量持续增长，2011年过闸量超过船闸1 亿t的设计通过能力，2013—2015年过坝货运量均达到1.2 亿t，超过设计能力20%,建设三峡新通道十分必要。简要介绍了三峡新通道研究进展情况，包括三峡新船闸建设方案和葛洲坝船闸扩能改造方案及主要技术问题。

关键词: 三峡新通道, 船闸布置, 航道整治, 扩能改造