Engineering Problems and Mitigation for Design, Construction, and Operation of the Mo'he Airport in Northeastern China in the Boreal Forest Zone

摘要

Permafrost area in China is about 2.15×l0~6km~2, and mainly distributed in Tibetan Plateau, Northeast China and mid-west mountainous areas. Although engineering construction increased gradually in permafrost regions with the development of society and science technology, there was no precedent case for the airport construction in permafrost regions two years ago. Mo'he Airport, the first airport in permafrost region in China, has been established since 2008. Some solutions of permafrost problems have been implemented for the airport construction by the researches of Mo'he Airport. Changing ground temperature, frost heaving and thaw settlement which belong to the research scope and key technique of engineering construction such as: Mo'he Airport design principles, frozen subsoil improvement, heat insulation material and replacement, sharp interface processing, and measures of waterproof and drainage are particularly introduced and proposed in permafrost region.