摘要
沙漠地区的气候特征与一般地区大不相同,在沙漠中,年降雨量少,年蒸发量大,温度变化大。在这些因素的影响下,沙尘暴活动频繁发生,对沙漠公路造成严重危害。沙子导致公路被风沙侵入或沙埋,严重影响了高速公路运营安全。本文通过在高速公路两侧设置气象观测站,对一年的风速风向进行分析研究,选取最不利情况的风速,采用Fluent meshing技术对路基断面风速和风压分布进行分析,并得出了沙粒随时间变化的沉积分布图,得到路基断面中沙粒最容易沉积的位置,为风沙防护针对性设计提供依据。
The climatic characteristics of desert areas are quite different from those of ordinary areas.In deserts,annual rainfall is low,annual evaporation is high,and temperature varies greatly.Under the influence of these factors,sandstorms occur frequently,causing serious harm to desert roads.Sand leads to highway invasion or sand buried by wind,which seriously affects the safety of highway operation.Through setting meteorological observatory on both sides of highway,this paper analyzes a year of wind speed and direction,to select the most unfavorable situation of wind speed,using Fluent software meshing technology for subgrade section of wind speed and wind pressure distribution is analyzed,and it is concluded that the distribution of sedimentary sand,time,get the location of the grains of sand are most likely to deposit in subgrade section,It provides the basis for the pertinence design of sandstorm protection.
作者
王海峰
吴永祥
丁新建
李瑞杰
Wang Haifeng;Wu Yongxiang;Ding Xinjian;Li Ruijie(Department of Transportation of Ningxia Province,NingxiaYinchuan 750001)
出处
《科技风》
2022年第31期70-72,共3页
基金
宁夏重点研发计划项目资助(2021BEG 02017)
宁夏交通运输厅科技项目(20200173)
宁夏公路数字信息化工程技术研究中心2019GCJS013。
关键词
高速公路
风沙流
沙漠腹地
风积风蚀
expressway
Aeolian sand flow
Desert hinterland
Aeolian erosion
