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

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

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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.

punched steel platesheltering effectfield observationscomputational fluid dynamics numerical simulationwindproof efficiency

ZHANG Kai、TIAN Jianjin、QU Jianjun、ZHAO Liming、LI Sheng

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College of Civil Engineering,Lanzhou Jiaotong University,Lanzhou 730000,China

Key Laboratory of Desert and Desertification,Northwest Institute of Eco-Environment and Resources,Chinese Academy of Sciences,Lanzhou 730000,China

Fellowship of the China Postdoctoral Science FoundationBasic Research Innovation Group Project of Gansu Province,China甘肃省自然科学基金

2021M70346621JR7RA34720JR10RA231

2022

干旱区科学
中国科学院新疆生态与地理研究所,科学出版社

干旱区科学

CSTPCDCSCDSCI
影响因子：1.743
ISSN：1674-6767
年,卷(期)：2022.14(6)
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