干旱区生态环境知识资源中心(Arid): Wind Dynamic Environment and Wind Tunnel Simulation Experiment of Bridge Sand Damage in Xierong Section of Lhasa-Linzhi Railway

Arid

DOI	10.3390/su12145689
	Wind Dynamic Environment and Wind Tunnel Simulation Experiment of Bridge Sand Damage in Xierong Section of Lhasa-Linzhi Railway
	Xie, Shengbo; Qu, Jianjun; Han, Qingjie; Pang, Yingjun
通讯作者	Xie, SB
来源期刊	SUSTAINABILITY
EISSN	2071-1050
出版年	2020
卷号	12 期号:14
英文摘要	The Lhasa-Linzhi Railway is located in the sandy area of the South Tibet valley, with high elevation and cold temperature. The Xierong section is a bridge section where blown sand hazards are severe. However, the disaster-causing mechanism of blown sand hazards in this section is currently unclear, thereby hindering targeted sand prevention and control. To address this problem, the wind dynamic environment of and causes of sand damage in this section are investigated through the field observation of the locale and a wind tunnel simulation experiment. Results show that the dominant sand-moving wind direction in the Xierong section is SSE. The wind speed, frequency of sand-moving wind, sand drift potential (DP), and maximum possible sand transport quantity (Q) in this section are relatively high during spring (March to May) and low during other seasons. The yearly resultant sand transport direction (RDD,RA) is SW. The angle between the route trend of this section and the sand transportation direction is 30 degrees-45 degrees, and the sand source is located in the east side of the railway. During spring, sand materials are blown up by the wind, forming blown sand flow and movement from the NE to SW direction. Increased wind speed area is formed between the top of the slope shoulder of the windward side of the bridge and the downwind direction of 3H, causing blown sand erosion. Meanwhile, weakened wind speed areas are formed within the distance of -3H at the upwind direction and from the downwind direction of the 3H to 20H of the bridge. These areas accumulate sand materials at the upwind and downwind directions of the bridge, thereby resulting in blown sand hazards. This research provides a scientific basis for the prevention and control of sand damage in the locale.
英文关键词	blown sand hazards blown sand dynamics wind tunnel experiment Lhasa-Linzhi Railway
类型	Article
语种	英语
开放获取类型	Green Published, gold
收录类别	SCI-E ; SSCI
WOS记录号	WOS:000555876600001
WOS关键词	AEOLIAN SAND ; FORMATION MECHANISM ; GROUND SURFACE ; WINDBLOWN SAND ; EROSION ; FLOW ; DESERTIFICATION ; TRANSPORT ; REGION ; DUNES
WOS类目	Green & Sustainable Science & Technology ; Environmental Sciences ; Environmental Studies
WOS研究方向	Science & Technology - Other Topics ; Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/325410
作者单位	[Xie, Shengbo; Qu, Jianjun; Han, Qingjie] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Key Lab Desert & Desertificat, Lanzhou 730000, Peoples R China; [Xie, Shengbo; Qu, Jianjun; Han, Qingjie] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Dunhuang Gobi & Desert Res Stn, Dunhuang 736200, Peoples R China; [Pang, Yingjun] Chinese Acad Forestry, Inst Desertificat Studies, Beijing 100091, Peoples R China
推荐引用方式 GB/T 7714	Xie, Shengbo,Qu, Jianjun,Han, Qingjie,et al. Wind Dynamic Environment and Wind Tunnel Simulation Experiment of Bridge Sand Damage in Xierong Section of Lhasa-Linzhi Railway[J],2020,12(14).
APA	Xie, Shengbo,Qu, Jianjun,Han, Qingjie,&Pang, Yingjun.(2020).Wind Dynamic Environment and Wind Tunnel Simulation Experiment of Bridge Sand Damage in Xierong Section of Lhasa-Linzhi Railway.SUSTAINABILITY,12(14).
MLA	Xie, Shengbo,et al."Wind Dynamic Environment and Wind Tunnel Simulation Experiment of Bridge Sand Damage in Xierong Section of Lhasa-Linzhi Railway".SUSTAINABILITY 12.14(2020).