青藏铁路错那湖段沙害防治措施研究

通过分析青藏铁路错那湖段气候特征、地质地貌、植被、沙丘分布及特征的基础上,分析了该地段铁路沙害的类型与成因,并对近年来在青藏铁路错那湖段采用的固沙和阻沙工程防沙措施进行了评价。从工程性价比、风沙流成因和防护效果的综合角度出发,提出了采用尼龙网沙障、混凝土沙障、活动板挡沙栅栏、截沙沟等阻沙措施和卵(碎)石覆盖沙面、覆膜沙袋沙障等固沙措施以及植物措施相结合防沙措施的建议,这种防沙体系的结构配置对该地段铁路沙害防治具有重要的指导意义,对青藏高原其他地区的铁路、公路防沙也有一定的借鉴意义。

Prevention and Management of Blown-sand Hazards along Qinghai-Tibet Railway in Cuonahu Lake Area

The authors have analyzed the characteristics of climate, geology and geomorphology, vegetation, and sand dunes distribution in the Cuonahu Lake area beside the Qinghai-Tibeta Railway, further have studied the types and causes of railway blown-sand hazards, and have assessed the effect of sand-controlling measures implemented along the Qinghai-Tibeta Railway in Cuonahu Lake area. From the point of view of integrated advisement, a sand-controlling system that combines engineering measures (i.e., nylon net sand-barrier, concrete sand-barrier, mobile boards sand-barrier, sand interception ditch, gravel/rock cover, film sandbag, and straw checkerboard) and vegetation measure is highly valued.