分析了溪洛渡右岸电站送电广东±500 kV同塔双回直流输电线路工程铁塔组立的施工关键技术，基于铁塔特殊塔型及线路沿线地形的特点，推荐采用内悬浮外（内）拉线抱杆分解组塔方案，重点阐述了铁塔横担的吊装施工工艺，为工程实施提供了施工技术支持和指导。

The key technology for the tower erection construction is studied in ±500 kV double-circuit DC transmission lines project from right-bank station of Xiluodu to Guangdong. Based on the special type of tower and the topographical features along the lines, the modular scheme for tower assembly is recommended by the holding pole internal-suspended and external(internal)-bracing. In addition, the lifting construction technology for the tower crossarm is introduced, providing technical support and guidance for the project construction.