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一、牙林线的特点 牙林线是我国最北方的一条铁路,是开发和建设大兴安岭的大动脉。该线绝大多数地段为依山傍水,地形、地貌、水文、地质均比较复杂,又是多年冻土区,冬季最低气温-48℃,夏季最高气温35℃,无霜期短,不到100天,温差大,气候多变,夏季雨水连绵。 牙林线牙克石至爱林是19世纪40年代修筑,库图段(库都尔—图里河)是1956年开始
First, the characteristics of the toothline The toothline is the most northern railroad in our country, is the development and construction of the Great Wall of Greater China. The vast majority of the line is Yishanbangshui, topography, geomorphology, hydrology and geology are more complex, but also the permafrost region, the lowest temperature in winter -48 ℃, the highest temperature in summer 35 ℃, frost-free period is short, less than 100 days Large temperature difference, changing climate, continuous summer rain. Yalin line Yakeshi to Ailin was built in the 1840s, Kutu (Kudu-Tuli River) was started in 1956