Sheltering effect of punched steel plate sand fences for controlling blown sand hazards along the Golmud-Korla Railway:Field observation and numerical simulation studies  

作　　者：ZHANG Kai TIAN Jianjin QU Jianjun ZHAO Liming LI Sheng 

机构地区：[1]College of Civil Engineering,Lanzhou Jiaotong University,Lanzhou 730000,China [2]Key Laboratory of Desert and Desertification,Northwest Institute of Eco-Environment and Resources,Chinese Academy of Sciences,Lanzhou 730000,China

出　　处：《Journal of Arid Land》2022年第6期604-619,共16页干旱区科学（英文版）

基　　金：This research was funded by the Fellowship of the China Postdoctoral Science Foundation(2021M703466);the Basic Research Innovation Group Project of Gansu Province,China(21JR7RA347);the Natural Science Foundation of Gansu Province,China(20JR10RA231).

摘　　要：Sand fences made of punched steel plate(PSP)have recently been applied to control wind-blown sand in desertified and Gobi areas due to their strong wind resistance and convenient in situ construction.However,few studies have assessed the protective effect of PSP sand fences,especially through field observations.This study analyzes the effects of double-row PSP sand fences on wind and sand resistance using field observations and a computational fluid dynamics(CFD)numerical simulation.The results of field observations showed that the average windproof efficiencies of the first-row and second-row sand fences were 79.8%and 70.8%,respectively.Moreover,the average windproof efficiencies of the numerical simulation behind the first-row and second-row sand fences were 89.8%and 81.1%,respectively.The sand-resistance efficiency of the double-row PSP sand fences was 65.4%.Sand deposition occurred close to the first-row sand fence;however,there was relatively little sand on the leeward side of the second-row sand fence.The length of sand accumulation near PSP sand fences obtained by numerical simulation was basically consistent with that through field observations,indicating that field observations combined with numerical simulation can provide insight into the complex wind-blown sand field over PSP sand fences.This study indicates that the protection efficiency of the double-row PSP sand fences is sufficient for effective control of sand hazards associated with extremely strong wind in the Gobi areas.The output of this work is expected to improve the future application of PSP sand fences.

关 键 词：punched steel plate sheltering effect field observations computational fluid dynamics numerical simulation windproof efficiency 

分 类 号：U216.413[交通运输工程—道路与铁道工程]