CAJ | 학술논문

输电线路工程现已成为我国冻土工程的重要组成部分。通过分析发现，在世界各冻土大国输电线路的建设中，俄罗斯在多年冻土区输电线路建设历史最长，累积长度约接近10万公里，电压等级主要为220 kV和500 kV；在环境变化条件下，各国工程建设中均发现冻胀融沉、冻拔问题、不良冻土现象等冻融灾害对对塔基稳定性造成的严重影响；鉴于输电线路点线工程特性，可充分结合冻土发育规律、合理选线和设置杆塔，有效减少冻融灾害发生；桩基础是多年冻土区较为通用的塔基形式，冬季施工是重要的选择原则；热管等工程措施的采用是减少冻融灾害和维护塔基稳定性的有效途径。
수전선로공정현이성위아국동토공정적중요조성부분。통과분석발현，재세계각동토대국수전선로적건설중，아라사재다년동토구수전선로건설역사최장，루적장도약접근10만공리，전압등급주요위220 kV화500 kV；재배경변화조건하，각국공정건설중균발현동창융침、동발문제、불량동토현상등동융재해대대탑기은정성조성적엄중영향；감우수전선로점선공정특성，가충분결합동토발육규률、합리선선화설치간탑，유효감소동융재해발생；장기출시다년동토구교위통용적탑기형식，동계시공시중요적선택원칙；열관등공정조시적채용시감소동융재해화유호탑기은정성적유효도경。
Transmission line projects have been an important part of permafrost engineering in China. Through comparing with different countries, it was found that Russia experienced the longest history on transmission line construction in permafrost areas, which transmission lines have span about 100,000 km mainly with 220kV and 500kV. Following with the cycles of freezing-thawing in environments, some adverse permafrost phenomenon seriously affect the stability of tower foundation in all of these countries, such as thawing settlement, frost lifting and so on. Considering the point-line engineering characteristics of transmission line, the freezing-thawing disasters could be effectively controlled by reasonable line selection and positioning combining with the development of permafrost. Pile as tower foundation, winter construction and the application of thermo syphon are more common ways to reduce freezing-dissolving disasters, and maintain the stability of tower foundations.