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当前位置: 首页 > 文章 > 青藏铁路北麓河段风况特征分析 四川林业科技 2018 (5) 52-57
Position: Home > Articles > Characteristic Analyses of the Wind Regime in Beilu River Section along Qinghai-Tibet Railway Journal of Sichuan Forestry Science and Technology 2018 (5) 52-57

青藏铁路北麓河段风况特征分析

作  者：
柯裕州;姜鑫贵;王丽娜;杨梅香;徐赟
单  位：
中国林业科学研究院荒漠化研究所;西藏自治区林木科学研究院;北京林业大学水土保持学院水土保持国家林业局重点实验室;北京林业大学云南建水荒漠生态系统国家定位观测研究站
关键词：
青藏铁路;风速;风向;输沙势;铁路沙害
摘  要：
利用五道梁气象观测站1973—2015年43a的实测数据(风速、风向、能见度、相对湿度),分析了北麓河段的风况特征。研究结果显示:北麓河地段属于高风能环境,主导风向为W、WNW,大风主要集中在11月~12月(冬季),1月—3月(春季)。2000年后风速趋于稳定,而沙害程度加深,造成该现象的原因是温度的升高,冻土层和表层冰雪消融,导致表层土壤松散,沙物质增多。北麓河段主要害风风向为W和WNW,故北麓河南北两岸所受沙害程度差异不大,建议适当增加北岸沙障数量,减少南岸沙障排数;在北麓河段的东西向上,采取以输沙为主的防沙措施减少河岸附近沙障的积沙。
译  名：
Characteristic Analyses of the Wind Regime in Beilu River Section along Qinghai-Tibet Railway
作  者：
KE Yu-zhou;JIANG Xin-gui;WANG Li-na;YANG Mei-xiang;XU Yun;The Tibet Autonomous Region Forest Science Institute;Institute of Desertification Studies,Chinese Academy of Forestry;Beijing Forestry University,Key Laboratory of State Forestry Administration on Soil and Water Conservation;Jianshui Research Station,School of Soil and Water Conservation,Beijing Forestry University;
关键词：
Qinghai-Tibet Railway;;Wind speed;;Wind direction;;Sand drift potential;;Railway sand damage
摘  要：
Based on the wind data of 1973—2015 collected from the Wudaoliang meteorological station,the temporal and spatial variations of wind regime characteristics were analyzed,including wind speed,wind direction,visibility and relative humidity in the Beilu River. The results showed that wind showed higher energy in Beilu River area,and the dominant wind directions were W and WNW,which concentrated in November to December( winter) and January to March( spring). After 2000,the wind speed tended to be stable,while sandstorms were more and more serious. It was mainly due to temperature rising which made the snow covered on the soil surface and frozen soil melted in winter and spring. Therefore the surface soil was out of protection so that sand material increased. In Beilu River,the main wind direction in observation time was W and WNW. It could be believed that sandstorms was of no significant difference on both north and south banks of Beilu River. So the number of sand barriers could be suggested to reduce in the South Bank,and that in the North Bank should be increased. In addition,some measures could betaken,aiming to transport sand to reduce sand sediment near the riverside sand barriers.

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