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长江是我国最大的通航河流，在三峡工程施工期间，为不影响长江航运的发展，保持在坝址河段航运的安全与畅通，是三峡工程施工期必须解决好的重大技术课题之一。三峡工程通过反复论证，针对各种可能出现的情况，采用了在右岸利用加宽加深导流明渠通航，并设置绞滩换推轮等进行助航，在左岸专设临时通航船闸，并对导流明渠和临时船闸进出口以外的航道进行优化整治，以尽可能地扩大该两条航线的通过能力，以及在上游建设翻坝码头作为意外应急和水库蓄水期客货过坝通道等综合工程措施，结合对工程设施进行合理的调度管理，预期能较好地满足施工期长江客货运输的要求。
The Yangtze River is China’s largest navigable river. During the construction of the Three Gorges Project, it is one of the major technical issues that must be solved in the construction of the Three Gorges Project in order not to affect the development of shipping in the Yangtze River and to maintain the safe and unobstructed shipping at the dam site. Through repeated demonstrations, the Three Gorges Project adopted various measures such as widening the navigation channel of the diversion channel on the right bank and setting up diversion drums for navigating aids, and setting up special temporary navigation locks on the left bank. Lumens and temporary locks outside the import and export of waterways to optimize the remediation, in order to maximize the capacity of the two routes through, and the construction of the upper reaches of the terminal as a surprise accident and reservoir storage period passenger and freight passageway dam comprehensive engineering Measures, combined with the rational management of construction facilities, is expected to better meet the construction of the Yangtze River passenger and freight transport requirements.