内蒙古风吹雪区域路面积雪病害特征研究  

Research on Snow Disease Characteristics of Road Area in Wind Blown Snow Area of Inner Mongolia

作　　者：李良 兰锦 张尤 谭文明 庞志慧 张宏[1] LI Liang;LAN Jin;ZHANG You;TAN Wen-ming;PANG Zhi-hui;ZHANG Hong(School of Transport,Inner Mongolia University,Huhehot 010070,China;China Communications Construction Co.Ltd.,Beijing,10001l,China)

机构地区：[1]内蒙古大学交通学院,呼和浩特市010070 [2]中交路桥建设有限公司,北京市100011

出　　处：《公路》2024年第12期425-432,共8页Highway

基　　金：内蒙古自治区关键技术攻关项目,项目编号2021GG0419;高校青年科技英才项目,项目编号NJYT22108。

摘　　要：内蒙古风吹雪区域路堤式公路常存在路面积雪病害,严重威胁公路交通安全且限制交通运输能力,为了有效防治运营公路路面积雪病害和合理设计风吹雪区域的新建公路,采用数值模拟方法定量分析多种影响因素下路面积雪病害特征,提出路堤式公路横断面设计参数。依据野外观测数据验证模拟方法的可靠性,在来流风速、雪粒粒径、路基高度、路基宽度、边坡比等因素影响下展开风吹雪区域路堤式公路路面积雪病害特征的研究。研究结果表明:在内蒙古风吹雪区域中为使路堤式公路路面积雪病害最少,宜使用边坡比1∶3、路基高度4 m、路基宽度10~15 m为组合的路基横断面参数;在路堤式公路路域中,迎风坡脚和背风坡脚一定会出现雪粒堆积,迎风坡中和路面右侧会出现雪粒堆积,迎风坡顶和背风坡顶不会出现雪粒堆积;气流受路堤扰动作用下,路堤式公路路域中风速呈现“M”型分布规律。研究结果可为内蒙古地区新建路堤式公路的风雪流防治提供一定参考。Embankment type highways in snow blown areas of Inner Mongolia often suffer from snow damage,which seriously threatens road traffic safety and limits transportation capacity.In order to effectively prevent and control snow damage on operating highways and reasonably design new highways in snow blown areas,numerical simulation methods are used to quantitatively analyze the characteristics of snow damage on road areas under various influencing factors,and design parameters for the cross-section of embankment type highways are proposed.Based on field observation data,the reliability of the simulation method is verified,and the characteristics of snow disease on embankment road surface in wind-blown snow area are studied under the influence of incoming wind speed,snow particle size,embankment height,embankment width,slope ratio and other factors.The research results indicate that in order to minimize snow damage on embankment type highways in the wind blown snow areas of Inner Mongolia,it is advisable to use a combination of slope ratio of 1∶3,embankment height of 4 m,and embankment width of 10~15 m as the cross-sectional parameters of the roadbed.In the embankment type road area,there must be snow accumulation at the windward slope toe and leeward slope toe,there will be snow accumulation at the windward slope and on the right side of the road surface,and there will be no snow accumulation at the windward slope top and leeward slope top.When the airflow is disturbed by the embankment,the wind speed in the embankment type highway area exhibits an"M"pattern.The research results can provide certain reference for the prevention and control of wind and snow flow on newly built embankment roads in Inner Mongolia.

关 键 词：道路工程 风雪流 积雪病害位置 数值模拟 路堤式公路 正交试验设计 

分 类 号：U418.56[交通运输工程—道路与铁道工程]