舟山与大陆联网输电线路工程需跨越国际航道，要求工程架线施工中不封航。为此，该大跨越输电工程放通1根初级引绳后，剩余各相导引绳和牵引绳需通过牵张倒换和空中移位技术来完成。文章介绍了导引绳和牵引绳在跨越塔上的空中移位、方法、步骤和操作要求。

The transmission project between Zhoushan and mainland need to cross international navigational route,of which the stringing and construction should have no effect on the navigation.After putting through a primary leading rope,the leading ropes and pulling ropes remained need to be completed by stretch switching and aerial transfer technology.Therefore,the aerial transfer,methods,procedures and operational requirements are introduced for the leading and pulling ropes crossing the tower.