湘江土谷塘航电枢纽船闸设计优化及创新

湘江土谷塘航电枢纽是湘江干流航道规划(2007年)的最后一个梯级,也是湖南内河水运发展规划(2011年)中的重点工程。因此,它的建设对湘江干流航道乃至整个湖南内河水运体系的发展都是至关重要的。分析土谷塘船闸的布置方案、工程特点,总结船闸设计过程中的创新点及优化设计成果:1)为达到施工导流方案优化的条件,设计了桩柱插板式隔水墙、兼顾围堰作用的闸室墙;2)为兼顾远期二线船闸对一线船闸进行优化设计,采用了底部透空式主导航墙、双向靠船墩结构;3)为提高船闸区的景观性,对闸首结构进行了优化,在上闸首内布置了管线竖井廊道,并调整了下闸首启闭机房布置,降低下闸首顶高程。

Design optimization and innovation for shiplock of Xiangjiang Tugutang navigation-power junction

Xiangjiang Tugutang navigation-power junction is the last cascade of Xiangjiang River Main Stream Waterway Planning (2007),and an important project of Hunan Water Transport Development Plan (2011) as well.So,its construction is very important for the development of Hunan inland waterway.This paper not only analyzes the general layout and engineering characteristics of Tugutang shiplock,but also summarizes the innovation and optimization for the shiplock design:1) in order to optimize the conditions of construction diversion,the pile-column-inserted plate water diversion wall and the chamber wall with the cofferdam function are used;2) the optimization design considering the second-line shiplock requirement by optimizing the first-line shiplock,the hollow-main navigation wall and the bidirectional pier structure are used;3) for improving the landscape of shiplock area,the structure design of lock head is optimized,including arrangement of pipeline corridor in the up-lock head,adjustment of the arrangement of the hoist room in the low-lock,and decrease of the top elevation of the low-lock head.