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Journal of Desert Research ›› 2025, Vol. 45 ›› Issue (2): 17-28.DOI: 10.7522/j.issn.1000-694X.2024.00114

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Environmental characteristics and movement rules of wind-blown sand in gobi concentrated solar power plant

Zhenyang Li1,2(), Hongwei Zhang3, Siru Shang4, Tongpan Zhang3, Shuai Yang3, Lihai Tan1, Junzhan Wang1, Deli Ye5, Xiulan Pang6, Tao Wang1()   

  1. 1.Key Laboratory of Ecological Safety and Sustainable Development in Arid Lands / Dunhuang Gobi Desert Ecology and Environment Research Station,Northwest Institute of Eco-Environment and Resources,Chinese Academy of Sciences,Lanzhou 730000,China
    2.University of Chinese Academy of Sciences,Beijing 100049,China
    3.Shouhang Dunhuang Solar Thermal Power Co. ,LTD,Dunhuang 736200,Gansu,China
    4.Gansu Institute of Industrial Economy and Information Technology,Lanzhou 730000,China
    5.Center for Plateru Energy Industry and Ecology,Qinghai Huanghe Hydropower Development CO. ,LTD,Xining 814000,China
    6.SPIC Qinghai Photovoltaic Industry Innovation Center Co. ,LTD,Xining 814000,China
  • Received:2024-04-29 Revised:2024-07-28 Online:2025-03-20 Published:2025-03-26
  • Contact: Tao Wang

Abstract:

Wind-blown sand disaster is the most important environmental problem faced by large-scale concentrated solar power plant in the gobi area. In order to find out the law of wind-blown sand movement in the gobi concentrated solar power plant, we carried out high-frequency wind-blown sand transport process and wind dynamic environment observation research in west Dunhuang gobi tower concentrated solar power plant. The observation results show that: (1) The construction of large concentrated solar power plant significantly reduces the wind speed near the surface, and the wind speed at the height of 0.5 m and 2 m from the surface decreases by 39.67% and 37.35%, respectively. The annual sand transport potential inside the power station is reduced by 93.62% compared with that outside the power station. (2) The surface sand accumulation results in the decrease of the sand driving wind speed in the power station and the increase of the sand transport rate in the near ground. The ut of sand generating wind speed at 2 m height in the power station is 7.36 m·s-1, which is 36.52%-63.2% lower than the general gobi surface. During the observation period, the sediment transport in the 0.05 m height range of the power station is 3.64 times that outside the power station. (3) The wind and sand transport in the power station is intermittent, but near continuous transport occurs in the period of strong dust, and the saltation intermittent parameter γρ is up to 99%. (4) The sediment transport rate in and out of the power station decreases exponentially with the increase of height. The average saltation layer height zq of the sand in the power station ranges in 0.1-0.35 m, and the average is 0.15 m, which is about 20% lower than the general gobi surface.

Key words: concentrated solar power plant, gobi, sand driving wind speed, sediment transport flux, saltation intermittency

CLC Number: