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

doi:10.7522/j.issn.1000-694X.2024.00114

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

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.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

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 u_t 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 γ_ρis 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 z_q 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:

X169

Zhenyang Li, Hongwei Zhang, Siru Shang, Tongpan Zhang, Shuai Yang, Lihai Tan, Junzhan Wang, Deli Ye, Xiulan Pang, Tao Wang. Environmental characteristics and movement rules of wind-blown sand in gobi concentrated solar power plant[J]. Journal of Desert Research, 2025, 45(2): 17-28.

Figures/Tables 13

Fig.1 Location map of the research area

Fig.2 Particle size composition of surface sand inside and outside the gobi concentrated solar power plant

Fig.3 The instrumental layout of wind-blown sand inside and outside the gobi concentrated solar power plant

Fig.4 Wind speed and direction at heights of 0.5 m and 2 m inside and outside the concentrated solar power plant on June 16， 2023

Fig.5 Saltation particle counts in different heights in the gobi concentrated solar power plant changed with time for the dust storm of June 16， 2023

Fig.6 Variation （A） of the intermittency of saltation γρ with time， and the relationship between intermittency of sand transport γρ and the average wind speed （B） in a height of 2 m

Fig.7 The threshold velocity for saltation in a height of 2 m on June 16，2023

Fig.8 Time series of the average saltation layer height zq on June16， 2023

Fig.9 The rose diagrams of annual drift potential inside and outside the gobi concentrated solar power plant

Table 1 Monthly sand drift potential inside and outside the gobi concentrated solar power plant

月份	电站内				电站外
月份	DP/VU	RDP/VU	RDD/(°)	RDP/DP	DP/VU	RDP/VU	RDD/(°)	RDP/DP
5	0.47	0.41	107(ESE)	0.87
6	3.77	3.37	103(ESE)	0.89
7	7.82	5.04	96(E)	0.64	152.07	116.86	107(ESE)	0.76
8	4.53	4.44	107(ESE)	0.98	96.08	45.45	114(ESE)	0.47
9	0.55	0.47	102(ESE)	0.85	26.05	20.49	101(E)	0.78
10	0	0	—	—	1.55	1.22	236(SW)	0.78
11	0	0	—	—	4.29	4.27	249(WSW)	0.99
12	0	0	—	—	5.24	4.63	94(E)	0.88
1	0	0	—	—	15.66	12.93	243(WSW)	0.82
2	0	0	—	—	5.00	3.79	122(ESE)	0.75
3	1.55	1.52	119(ESE)	0.98
4	1.88	1.85	94(E)	0.98

Fig.10 The variation in qzm as a function of height z above the gobi surface during the observation period on June 16，2023

Fig.11 Accumulation curve of sand particles collected at the bottom layer （0-5 cm） of the sand collector on June 16， 2023

Fig.12 Particle size of sand in different heights inside and outside the gobi concentrated solar power plant on June 16， 2023

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

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