[1]Cui Jian,Gao Junliang,Qiao Jingran,et al.Research on the Protective Benefits of the ‘Wheat Grass Sand Barrier Haloxylon ammodendron' on the Ulanbuh Desert Highway[J].Research of Soil and Water Conservation,2024,31(01):250-259.[doi:10.13869/j.cnki.rswc.2024.01.036]
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Research on the Protective Benefits of the ‘Wheat Grass Sand Barrier Haloxylon ammodendron' on the Ulanbuh Desert Highway
Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
31
Number of periods:
2024 01
Page number:
250-259
Column:
Public date:
2024-02-20
- Title:
- Research on the Protective Benefits of the ‘Wheat Grass Sand Barrier Haloxylon ammodendron' on the Ulanbuh Desert Highway
- Keywords:
- highway sand damage; windproof sand fixation system; protection efficiency; Ulan Buh Desert
- CLC:
- X171.4; P425.5+5
- DOI:
- 10.13869/j.cnki.rswc.2024.01.036
- Abstract:
- [Objective] Studying the windbreak and sand fixation effects of highway protection systems can provide scientific basis for the prevention and control of sand damage on regional highways. [Methods] The protection system of the Deng-E Desert Highway in the northeast of Ulanbuhe Desert was taken as the research object, and synchronous observation was conducted on the sediment discharge and wind speed of the protective system. [Results](1)After the sand flow passes through the protection system, the wind speed and total sand transport at each height decrease, and the surface roughness increases. The wind speed in the upwind direction(point B)and downwind direction(point C)of the protection system decreases by 48.7%, 14.4%, and 3.9%, respectively, compared to point A from high to low. The total sand transport rate decreased by 86.4% and 98.3%, respectively, compared to point A, and the surface roughness increases from about 0 cm to 4.92 cm.(2)The vertical distribution of sand particle size shows a significant decrease in medium sand content and a significant increase in fine sand content. The particle size distribution of surface sediment decreases, the frequency distribution curve narrows in some bands, and the sorting ability deteriorates. The particle distribution is uniform and develops towards fine-grained direction, with a range of easily weathered particles ranging from 180 to 200 μm. [Conclusion] For road sand prevention projects, there should be a construction concept of “putting resistance first and combining resistance and fixation”. At the same time, the practice of road wind and sand prevention and fixation systems in this research area can provide important reference experience for road sand prevention in the other regions.
- References:
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Last Update:
2024-02-20