沙漠公路路堤输沙性能风洞试验

Wind Tunnel Experiment on Conveying Sand Performance About Embankment of Desert Highway

引用风沙环境流场理论,分析了路堤断面对流场的影响以及风向对路堤输沙性能的影响。采用风沙环境风洞试验方法,推导出路堤阻沙性能指数与流场速度、路堤边坡坡度、路堤高度的多因素数学模型。结果表明:路堤阻沙性能指数与流场速度呈幂函数变化,与路堤边坡坡度呈负指数变化,与路堤高度呈指数变化和直线变化。

Authorsquoted the flow field theory of sand environment and analyzed the influence of embankment cross-section on flow field and the influence of wind direction on conveying performance about embankment. Using pneumatic test method of sand environment, authors derived multi-factor mathematical model about the index of the embankment resistance sand performance and flow rate, degree of embankment slope, embankment height. Results show that the index of the embankment resistance sand performance and flow velocity have a power function change relation, have a negative index change relation with embankment slope degree, and have index change and linear change relation with embankment height.