青藏直流联网工程多年冻土地区杆塔基础的地温与变形监测分析

由于青藏高原多年冻土恶劣的工程地质条件，给青藏直流联网工程建设和运营带来了巨大的技术和经济难题。对工程沿线不同冻土类型、不同杆塔基础型式以及有无热棒处理措施的8个地段、10个基塔进行了地温和变形监测，并基于监测结果，分析了冻土地区杆塔基础地温和变形的变化规律和影响因素，预测了其在全球气候变暖条件下的长期稳定性，为冻土区杆塔基础的设计和稳定性研究提供基础数据。

Ground Temperature and Deformation Monitoring and Analysis of Tower Foundation for Qinghai-Tibet DC Transmission Engineering in Permafrost Regions

Due to the bad engineering geological condition of permafrost regions in the Qinghai-Tibet Plateau, immeasurable economic and technical problems are brought for Qinghai-Tibet DC transmission engineering. Ground temperature and deformation of eight sites and ten tower foundations with different soil types and foundation forms and thermal probes treatment were monitored and measured, the change laws and influential factor of ground temperature and deformation for tower foundation is analyzed, and also long-term stability is predicted in this paper based on the monitoring results, which provides data for design and stability analysis of tower foundation in permafrost regions.