三峡工程施工期几个关键水力学问题研究

介绍了三峡工程施工期几个关键水力学问题的研究情况, 包括大江截流问题研究; 明渠通航问题研究; 导流底孔水力特性研究等。结果表明: (1) 大江围堰施工采用龙口部位深水河床预平抛垫底措施后, 可确保1997年顺利实现大江截流。(2) 设计选用的导流明渠布置型式, 可满足设计船队通航要求。(3) 设计选用的长有压管导流底孔方案,可满足设计要求,并具有结构简单和施工方便的优点。

Study of Essential Hydraulic Prolems of TGP During Construction Period

This paper presents experimental results of essential hydraulic problems during construction period, including the river closure of main channel, navigation condition in diversion channel, and hydraulic characteristics of diversion bottom outlet, and so on. Experimantal results demonstrated that: (1) Dumping excavated rock materials in advance at bottom of the final gap can ensure the main channel closure being completed smoothly in 1997. (2) Layout of diversion channel can satisfy the requirement of design for navigation. Investigation data presented in the paper can be served as references for other projects.