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一、前言 我国正在包头和兰州之间修建一条铁路,把华北和西北直接连接起来。这条铁路的兰州至银川一段,原拟经由黄河南岸,但在测线过程中发现水泉、大营一带地震情况恶劣,对铁路通过不利,苏联专家到现场视察后,建议在黄河以北,经过景泰、中卫至银川另测一线,但这一条线必须通过40公里长的沙漠地带,仅孟家湾——迎水桥地区,沙漠便长达16公里。目前,铁路通过流沙上是完全可能的,问题在于铁路修成之后如何能不受流沙的掩埋。因此,国家建委提出由中国科学院林业土壤研究所担负鈇路两侧的固沙造林试验任务。我们担任该区土壤水分物理性测定和土壤调查工作。
I. Preface Our country is constructing a railway between Baotou and Lanzhou to connect North China and Northwest China directly. The Lanzhou-Yinchuan section of the railway was originally intended to pass the south bank of the Yellow River. However, during the survey, it was found that the earthquakes occurred in the vicinity of Shuicquan and Daying were adversely affected. After passing the railway adversely, Soviet experts went to the site to inspect the area. Jingtai, Zhongwei to Yinchuan another test line, but this line must pass the 40 km long desert zone, only Meng Bay - Yingshui Bridge area, the desert will be up to 16 km. At present, it is perfectly possible for the railway to pass through quicksand and the problem is how to get rid of quicksand after the railway is completed. Therefore, the State Construction Commission proposed by the Chinese Academy of Forestry Institute of Forestry soil on both sides of Karst afforestation afforestation test tasks. We are responsible for the physical determination of soil moisture and soil investigation in this area.