Evaluation of protection benefit of sand barrier fence with different heights on desert highway
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View abstract on PubMed
Summary
This summary is machine-generated.Optimizing sand-blocking fence height is crucial for desert highway safety. A 2.5m fence height significantly reduces wind speed and increases sand deposition, offering the best wind and sand prevention effect.
Area Of Science
- Environmental Engineering
- Geotechnical Engineering
- Transportation Engineering
Background
- Sand-blocking fences are essential for desert highway protection and safety.
- The Wuma Expressway faces challenges from wind and sand erosion.
- Understanding the impact of fence design on wind and sand control is critical.
Purpose Of The Study
- To investigate the wind and sand-blocking effects of sand-blocking fences with varying heights.
- To determine the optimal fence height for maximizing protection on desert highways.
- To analyze the influence of fence height on wind speed reduction and sand deposition.
Main Methods
- Computational Fluid Dynamics (CFD) numerical simulations were employed.
- The study analyzed wind speed reduction at different heights (0.1m-0.3m).
- Sand deposition thickness and volume fraction were quantified.
Main Results
- Sand-blocking fences reduced near-surface wind speeds by 87%-97%.
- A fence height of 2.5m significantly enhanced windbreak efficiency (>90%) and sand deposition.
- Optimal fence height of 2.5m reduced sand accumulation on the embankment by 73.44% compared to a 2m fence.
Conclusions
- Fence height is a significant factor in windbreak efficiency, particularly between the second and third fences.
- A sand-blocking fence height of 2.5m provides the most significant sand-blocking effect.
- The 2.5m fence height offers the best overall wind and sand prevention for desert highways.
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