Experimental Study on the Formation Mechanisms of Condensed Water in a Wind-blown Sand Area in the Ordos Basin

Wang, Zhe; Liu, Shaoyu; Di, Li; Wang, Lijuan; Song, Shaoxu; Guo, Hongbo

doi:10.3724/sp.j.1148.2009.00496

Cited by 2 publications

(2 citation statements)

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“…The characterization of the attenuation rate in the three-parameter exponential function will present a decreasing trend, aligning with previous research findings ( Duran and Herrmann, 2006). As illustrated, the creeping sand transport rate and attenuation rate in the wind-blown sand flow structure can elucidate the basic characteristics of sand transport flux at varying heights near the surface within differently configured sand-obstacles (WANG et al, 2018;Wen et al, 2022).…”

Section: Discussionsupporting

confidence: 85%

Interference effect of configuration parameters of vertical sand-obstacles on near-surface sand transport

Luo,

Li,

Tang

et al. 2023

Front. Environ. Sci.

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This study investigates the impacts of height (H) and porosity (P) on the structural properties of wind-driven sand flux in vertical sunflower straw sand-obstacles. We conducted an experiment on sand transport within barriers of various configurations within a 1 m proximity to the surface. In tandem, we monitored wind velocity and direction within the barriers, analyzed total sand transport rate, sand-blocking effects, and cumulative sediment transport rate heights for various parameter configurations, and devised a best sand transport flux model for use within the sand-obstacle. The efficacy of vertical sunflower stalk sand-obstacles in mitigating sand movement has been demonstrated to fall within the range of 37.26%–92.31%. This study reveals a significant correlation between barrier height and porosity in achieving this effect (p < 0.05). High and densely configured sand-obstacles lead to an accumulation of intercepted sand material in front of the front row of the sand-obstacle. In contrast, low and sparsely arranged sand-obstacles exhibit a delayed state of sand material accumulation. Furthermore, with an increase in the height of the obstacle and a decrease in porosity, there is a diminishing trend in the sand transport rate within the obstacle. Concurrently, the height of sand transport within the barrier exhibits an upward trend. A three-parameter exponential function has been employed to more precisely simulate the wind-sand flow structure characteristics within a 1-m height range of the barrier. These research findings contribute to an enhanced understanding of the impact of different vertical sand-obstacle configurations on near-surface wind-driven sand transport patterns in active desert areas. Moreover, they furnish both theoretical underpinnings and practical guidance for the scientific configuration of vertical sand-obstacles.

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Section: Discussionsupporting

confidence: 85%

Interference effect of configuration parameters of vertical sand-obstacles on near-surface sand transport

Luo,

Li,

Tang

et al. 2023

Front. Environ. Sci.

View full text Add to dashboard Cite

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“…A study by Li J Y et al (2020) found that mechanical sand barriers have a clear positive impact on sand fixation and control and can effectively reduce wind erosion and improve the ecological environment. In addition to mechanical sand barriers, there are other types of traditional sand barriers, such as grass-checkered sand barriers (Qiu, 2004;Xu et al, 2018;Wang et al, 2020;Wang et al, 2021), clay sand barriers (Chang et al, 2000;Liu, 2008), geotechnical sand barriers (Dong et al, 2007;Bai, 2009;Nie, 2012), living sand barriers (Miao et al, 2018;Wang et al, 2018), branch sand barriers (Meng et al, 2014;Shi et al, 2021;Liang et al, 2022) and gravel sand barriers (Zhang et al, 2012;Li et al, 2022). All these traditional sand barriers have good wind-proof and sand-fixing effects.…”

Section: Resultsmentioning

confidence: 99%

The effect of double-row wing bag sand barrier on wind prevention and sand fixation: wind tunnel simulation and field verification

et al. 2023

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Introduction: Most of the sand fixation technologies utilized locally and internationally are static or dynamic, making it challenging for a single sand fixation mode to function in a harsh environment. Therefore, the development of a sand fixation mode that combines resistance and consolidation has emerged as a trending topic in sand control research. Our team developed the wing bag sand barrier, which is a static and dynamic combination of sand fixation mode.Methods: In this study, we examined the characteristics of airflow velocity field and sand resistance near double-row wing bag sand barrier under different wind conditions to screen out the optimal mode of wing bag sand barrier. The analyses were conducted under nine configuration modes through the wind tunnel simulation experiment and the field experiment.Results: The inflection point of the airflow was always 5H on the windward side of the wing bag sand barrier, regardless of the wind speed. The protection range of the wing bag sand barrier with the same specifications was gradually weakened with the increase of the wind speed. However, there was an upward trend in both total sand accumulation and sand accumulation of each height layer. When the wind speed was slower than 8 m/s, the sand accumulation behind the barrier was mainly concentrated in the 0–10 cm height layer, and when the wind speed was 12 m/s, it was mainly concentrated in the 30–60 cm height layer. At the leeward side of the wing bag sand barrier, sand particles were rejected in the range of 0–30 cm; however, they were conducted in the range of 30–60 cm. The protective effect of the wing bag sand barrier simulated in the wind tunnel experiment was consistent with that of the field experiment.Discussion: For a wind speed of slower than 6 m/s, the recommended specification for the field-installed wing bag sand barrier was 25 cm × 20 cm or 30 cm × 20 cm. The specifications 25 cm × 20 cm and 25 cm × 25 cm were recommended at an inlet wind speed of 8 m/s. When the wind speed was greater than 12 m/s, the recommended specifications were 25 cm × 25 cm, 25 cm × 20 cm, and 20 cm × 25 cm.

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Experimental Study on the Formation Mechanisms of Condensed Water in a Wind-blown Sand Area in the Ordos Basin

Cited by 2 publications

References 1 publication

Interference effect of configuration parameters of vertical sand-obstacles on near-surface sand transport

Interference effect of configuration parameters of vertical sand-obstacles on near-surface sand transport

The effect of double-row wing bag sand barrier on wind prevention and sand fixation: wind tunnel simulation and field verification

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