以220 k珠海V琴韵—澳门莲花电缆线路工程（第3标段）穿越十字门水道标段工程施工为例，阐述跨江河长距离管道内特大截面电缆敷设全过程的施工技术。首先采用水平定向钻孔技术对河道进行穿越，然后铺设电缆保护管道，再利用大功率液压牵引机作为牵引设备，同时使用带刹车装置的电缆支架配合输送展放电缆敷设。大功率液压牵引机在电缆敷设中的应用，比以人工机动绞磨作为单一动力的传统施工方法，更安全、经济和有效。

Taking the project of Shizimen Channel crossing part of 220 kV Qinyun (Zhuhai)-Lianhua (Macao) Power Transmission line (Lot-3) as an example, the construction technique for long distance river-crossing cable with extra cross-sectional size cable laying inside pipeline was introduced. Firstly, horizontal directional drilling machine was used to cross the river channel, then protective pipeline was laid for cable and high-power hydraulic puller was used as the pulling machine; at the same time cable support with brake equipment was used as the supporting device for transmission cable laying. Compared with the conventional construction method that only uses manual maneuvering winch as single power, the construction method that uses high-power hydraulic puller in cable laying is more safe, economic, and effective.