气候变化领域集成服务门户(CCPortal): Formation mechanism and suitable controlling pattern of sand hazards at Honglianghe River section of Qinghai-Tibet Railway

CCPortal

DOI	10.1007/s11069-014-1523-7
	Formation mechanism and suitable controlling pattern of sand hazards at Honglianghe River section of Qinghai-Tibet Railway
	Xie, Shengbo; Qu, Jianjun; Lai, Yuanming; Pang, Yingjun
发表日期	2015
ISSN	0921-030X
EISSN	1573-0840
起始页码	855
结束页码	871
卷号	76 期号:2
英文摘要	The sand hazards at Honglianghe River section of Qinghai-Tibet Railway are serious, and the effect of controlling measures is limited because the disaster-causing mechanism is currently unclear. The source of sandy materials, blown sand power environment, and controlling measures of Honglianghe River section were investigated by using methods such as field observation and analysis and indoor calculation to understand the sand hazard rules of Qinghai-Tibet Railway systematically. The sandy materials discovered are mainly from the sandy hill of the west side of the railway. In addition, the grain composition of sand with particle size in the range of 0.25-0.10 mm is given priority. Yearly sand-moving winds are usually from the N, NNW, and NW directions. The frequencies of these three wind groups accounted for 85.16 % of the yearly total. The most serious sand hazards were located at the NW direction of the railway. The yearly sand drift potential (DP) is 270.57 vector units (VU), the yearly resultant drift potential (RDP) is 247.27 VU, the yearly direction variability index (RDP/DP) is 0.91, and the yearly resultant drift direction is 162.84A degrees. In windy dry season (during the colder half of the year), loose and broken sand materials are blown up by wind, forming wind-sand flow and movement, which are then blocked by the railway subgrade, and accumulate and thus cause disaster. We propose that the sand-controlling pattern of Qinghai-Tibet Railway is dominated by sand blocking and sand fixing, namely sand blocking in the outer fringe and sand fixing in the inner fringe, supplemented by sand transport and sand diversion, combined with vegetation. This pattern can be a significant reference to controlling sand hazards in other similar zones.
英文关键词	Qinghai-Tibet Railway; Sand-moving wind; Drift potential; Sand hazards; Controlling pattern
语种	英语
WOS研究方向	Geology ; Meteorology & Atmospheric Sciences ; Water Resources
WOS类目	Geosciences, Multidisciplinary ; Meteorology & Atmospheric Sciences ; Water Resources
WOS关键词	TRANSPORT ; WIND
WOS记录号	WOS:000350343600008
来源期刊	NATURAL HAZARDS
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/239497
作者单位	[Xie, Shengbo; Qu, Jianjun; Lai, Yuanming] Chinese Acad Sci, Cold & Arid Reg Environm & Engn Res Inst, State Key Lab Frozen Soil Engn, Key Lab Desert & Desertificat,Dunhuang Gobi & Des, Lanzhou 730000, 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,Lai, Yuanming,et al. Formation mechanism and suitable controlling pattern of sand hazards at Honglianghe River section of Qinghai-Tibet Railway[J],2015,76(2).
APA	Xie, Shengbo,Qu, Jianjun,Lai, Yuanming,&Pang, Yingjun.(2015).Formation mechanism and suitable controlling pattern of sand hazards at Honglianghe River section of Qinghai-Tibet Railway.NATURAL HAZARDS,76(2).
MLA	Xie, Shengbo,et al."Formation mechanism and suitable controlling pattern of sand hazards at Honglianghe River section of Qinghai-Tibet Railway".NATURAL HAZARDS 76.2(2015).