公路草皮沟曼宁粗糙系数取值研究  

Study on the Value of Manning Roughness Coefficient in Highway Grass Gully

作　　者：袁伟 王富春[2] 李志斌 姚婉婷 李晓旭 YUAN Wei;WANG Fuchun;LI Zhibin;YAO Wanting;LI Xiaoxu(Shanxi Provincial Transportation Planning Survey and Design Institute Co.,Ltd.,Taiyuan Shanxi 030032,China;Chang’an University,Xi’an Shaanxi 714000,China)

机构地区：[1]山西省交通规划勘察设计院有限公司,山西太原030032 [2]长安大学,陕西西安714000

出　　处：《交通节能与环保》2025年第2期154-160,共7页Transport Energy Conservation & Environmental Protection

摘　　要：为完善降雨区公路生态排水技术,本文以山西省青银二广高速公路太原联络线工程为例,开展模型试验,研究草皮边沟不同沟宽、沟深、坡度下的边沟糙率n与水流参数H、Q、ν的关系,着重评估了抛物线型草皮沟的排水能力,并对其在公路排水系统中的可行性进行了评估。利用曼宁公式及实测水流数据计算了抛物线型草皮沟的边沟糙率及其变化规律,为草皮沟流量设计提供关键参数。To improve the ecological drainage technology of roads in rainy areas,model tests were conducted using the Taiyuan connecting line project of the Qingyin Second Guangzhou Expressway in Shanxi Province as an example.This experiment studied the relationship between the roughness n of the grass edge ditch and the water flow parameters H,,v,and ν under different ditch widths,depths,and slopes.The focus was on evaluating the drainage capacity of the parabolic grass edge ditch and its feasibility in highway drainage systems.The Manning formula and measured water flow data were used to calculate the roughness and its variation pattern of the parabolic grassland ditch,providing key parameters for the flow design of the grassland ditch.

关 键 词：公路工程 边沟糙率 模型试验 草皮边沟 生态排水 设计参数 

分 类 号：U417.3[交通运输工程—道路与铁道工程]