库尔勒至格尔木铁路风沙地区选线

库格铁路沿线风沙发育,影响铁路运营安全,在线路设计中做好选线工作,为铁路长期安全运营创造良好条件。本文从铁路选线需求出发,突破了只把风沙地貌划分为风蚀区和风沙堆积区的限制,首次提出将风沙地区按风沙形态划为风蚀区、风沙流区和风沙堆积区3个区域,分析了3个区域的风沙活动规律,归纳总结了3个区域内铁路不同的选线原则、工程防沙方式,并以库格铁路风沙选线为实例进行分析说明。以3个风沙形态区域为基础,确定铁路选线原则,很好地指导了库格铁路风沙地段选线,并可为其它风沙地区铁路项目和设计标准修订提供参考。

Route Selection of the Korla-Golmud Railway in Storm Sand Area

Sand storm are badly developed along the Korla-Golmud railway,which poses potential threat to the railway.Selecting the best route in sand storm regions can create favorable conditions for railway long-term operation safety.From the demand of railway route selection,this paper broke the concept of aeolian landform being classified as wind erosion area and aeolian sand area and divided it into wind erosion area,sand-driving wind area and aeolian sand area according to the sand storm form for the first time.Through analyzing the activity pattern of sand storm in the three areas,this paper concluded the different route selection principles and protective measures for them and took the route selection of the Korla-Golmud railway as an example.Formulating railway route selection principle based on the three types of sand storm areas makes the design idea clear and is feasible for practical route selection for the Korla-Golmud railway in sand storm areas,which can provide a reference for other railway in the same situation.