浅议沙漠地区铁路选线

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，绕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。

PRELIMINARY DISUSSION ONRAILWAY ROUTE SELECTION IN DESERT REGIONS

The paper expounds the causes of formation ofthe desert,the characteristics of the motion of sand blown by the wind and itsmechanism,as well as the subgrade defects which may be affected by sand blown by the windduring costruction of railway in the desert regions.Therefore,during route selection ofrailway line,the change of wind direction and the law of its motion should be taken intoattention,and the regions in which sand dunes may be easily formed and the seriousquicksand regions should be avoided and taken a devious route.In accordance with thepractical example of the route selection of the Shen-Yu Railway,the design feature ofrailway in the desert regions is introduced in detail in this paper.