11月21日至23日,由寒区旱区环境与工程研究所主办的中国科学院知识创新工程重大项目——青藏铁路工程与冻土相互作用及环境效应学术年会在兰州召开。科技部、青藏铁路领导办公室、铁道部第一勘测设计院、青藏铁路建设总指挥部,中铁十二局、十六局、十七局以及同济大学、西北理工大学、南京大学、中国矿 From November 21 to November 23, the annual meeting of Qinghai-Tibet Railway Engineering and Permafrost Interaction and Environmental Effects, a major project of knowledge innovation project sponsored by the Cold and Arid Regions Environmental and Engineering Research Institute, was held in Lanzhou. Ministry of Science and Technology, the leading office of the Qinghai-Tibet Railway, the First Survey and Design Institute of the Ministry of Railways, the headquarters of the Qinghai-Tibet Railway, the 12th, the 16th and the 17th Bureau of the China Railway, Tongji University, Northwestern Polytechnical University, Nanjing University,