在利用旧地线展放邓家溪长江大跨越光缆的过程中，采取下侧两边相导线间设防护网的保护方式，在不封航条件下实现高张力展放；在山区场地狭窄的工况下，合理设置转向滑车、布置牵引场，方便了光缆松弛挂线；利用张力轮反转方式进行紧线，提高了紧线、挂线施工效率。实践表明：高张力展放光缆的施工方式既能保障光缆的力学、光学特性，又可以确保长江的正常通航，社会效益显著，值得在类似的施工中借鉴。

The protecting mesh between two phase conductors was used to avoid navigation-closure, during the large span stringing cable process for the Yangtze River at Dengjiaxi, which applied old ground wires. In mountain area, the arrangement of corner block and pulling field was suitable for the cable-fitting with low tension. The inversion method of tension wheel could improve the efficiency of stringing construction. The results show that the construction mode of high-tension stringing cable can ensure the cables mechanical and optical property, as well as the normal navigation of the Yangtze River, which has significant social benefit and can be used as references in the similar construction process.