公路施工场地扬尘污染扩散机理及抑尘措施研究

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文章编号：1674-6139（2025)06-0077-05

中图分类号：X734文献标志码：B

Research on Diffusion Mechanism and Dust Suppression Measures of Dust Pollution in Highway Construction Sites

Tang Longxing

(Zhenba County Rural Highway Development Center,Hanzhong 7236OO,China）

Abstract:Since thecurrentmethodcannotefectivelysuppressdust,thedifusionmechanismanddustsuppressionmeasuresof highwayconstructionsiteustpolutionbasedonCFDarestudied.UsingCFDfluiddnamicstosimulatefluidflow,theprocessofdust difusionissmulatedbysetingtheboundaryconditionsofcontiuousphaseflowfieldtocalculateReyoldsnumberandjudgefluidflow stateThedusttrbulencemodeldscriptionquationasconstructedtobtainthedustpolltiondifusioncoefcientandeflcttedust particledifusionabilityiteairTeselingvelocityofustparticesialulated,tustpolutiolevelsedvidedcodigto thedustmass concentration,andthedustsuppressionmeasuresare taken.Theexperimentshows that whenthe truck speed is 40km/h （20 and 50km/h ，the maximum concentration of PM2.5 can be inhibited by 155μg/m3 and 260μg/m3 respectively，and the maximum concentration of PM10 can be inhibited by 90μg/m3 and 55μg/m3 respectively，all of which belong to mild pollution and can effectively deal with dust pollution.

Key Words:highway construction；dust pollutionon the site；difusion mechanism；dust suppression measures；CFD

前言

公路施工是现代交通基础设施建设中不可或缺的一环，然而过程中产生的扬尘污染问题却日益凸显。（剩余7503字）