三峡工程二期临时航道连接河段整治研究

三峡工程二期施工期间的通航任务由临时的船闸与右岸导流明渠共同承担。导流明渠和临时船闸上，下游航道连接河段通航水流条件好坏，直接关系到大江截流后施工期航运安全问题，根据模型试验的成果，阐述了临时船闸和明渠上，下游连接河段整治前后的通航水流条件，并对设计提出的整治方案进行了验证和其它进一步的优化。目前，三峡明渠及临时船加分别正式通航了１年和半年，实践证明本试验提出的整治优化方案地改善了临时航道连接河段

Regutation of Connecting Sections for Temporary Navigation Waterway

The ships can only pass through the temporary shiplock or the open diver-sion channel during the period of the second -phase construction of the Three Gorges Project. The flow condition for the ups and downstream connecting sections of the open diversion channel afld the temporary shiplock have a direct impact on the safe naviga-tion during the construction period after the closure of the Yangtze river at the Three Gorges Project site- From the hydraulic model experiments, the flow conditions for navigation of the ups and downstream connection sections of the open diversion chan-nel and the temporary shiplock are discribed, and the regulatiofl measures proposed by the designer had been verified and futher optimized. At present, the open diversion channel and the temporary shiplock have been put into operation for one year afld six months, respectively 9 which has proved that the optimum regulation soIution based on experlments improves effectively the navigation flow conditions of the connetion sec-tion and ensllre the safe navigation.