浅议沙漠地区铁路选线

PRELIMINARY DISUSSION ON RAILWAY ROUTE SELECTION IN DESERT REGIONS

本文阐述了沙漠的成因，风沙运动的特征及形成的机理，在该地区修造铁路风沙对路基可能造成的沙害，因此在线路选线时应注意风向的变化和流动规律，统避易形成沙丘和严重流沙的地带。通过神榆铁路选线的实例介绍了沙漠地区线路的设计。

The paper expounds the causes of formation of the desert,the characteristics of the motion of sand blown by the wind and its mechanism,as well as the subgrade defects which may be affected by sand blown by the wind during costruction of railway in the desert regions. Therefore,during route se lection of railway line,the change of wind direction and the law of its motion should be taken into at tention,and the regions in which sand dunes may be castly formed and the serious quicksand regions should be avoided and taken a devious route. In accordance with the practical example of the route se lection of the Shen-Yu Railway,the design feature of railway in the desert regions is introduced in de tail in this paper.