干旱区生态环境知识资源中心(Arid): Experimental studies of wind erosion failure of aeolian soils subgrade for desert highway

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	Experimental studies of wind erosion failure of aeolian soils subgrade for desert highway
	Li Chi; Gao Yu
通讯作者	Li, C
来源期刊	ROCK AND SOIL MECHANICS
ISSN	1000-7598
出版年	2011
卷号	32 期号:1 页码:33-38
英文摘要	Wind erosion failure law of aeolian soils subgrade and the influence of the different subgrade design cross-sections on wind-blown sand are studied through interior wind erosion wind tunnel test. The wind-blown sand's process of disturbance, accelerating, speed-down, and recovery in different subgrade cross-sections are studied; the characteristic of wind-blown sand field around subgrade are summarized for subgrade defect and subgrade non-defect. The influence factor on the wind erosion failure of aeolian soils subgrade is analyzed. The results indicate that the effect of subgrade height and slope gradient on the wind-blown sand field is obvious; while the change of subgrade's width can't affect the flow field notably. The disturbance to the flow field enhances with the increase of subgrade's height, blow erosion on the top of the windward slope is severe; and heap erosion destroy is brought to the bottom of leeward slope. When subgrade model height is 250 mm compared with that of 60 mm, the wind speed on the top of windward slope increase 1.13 times and decrease 2.53 times at bottom of leeward slope for the certain side slope rate. So subgrade height should less than 2.5m to avoid the wind erosion failure of desert highway. Further, the influence of the different side slope rate on wind-blown sand is analyzed for the certain subgrade height. The change of the wind speed is unconspicuous when the side slope gradient is 1: 1.75, the wind erosion failure of aeolian soils subgrade is neglectable.
英文关键词	geoenvironmental engineering desert highway wind-blown sand wind erosion subgrade sections interior wind erosion wind tunnel test
类型	Article
语种	中文
收录类别	ESCI
WOS记录号	WOS:000410703800004
WOS类目	Engineering, Geological
WOS研究方向	Engineering
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/329792
作者单位	[Li Chi; Gao Yu] Inner Mongolia Univ Technol, Coll Civil Engn, Hohhot 010051, Peoples R China
推荐引用方式 GB/T 7714	Li Chi,Gao Yu. Experimental studies of wind erosion failure of aeolian soils subgrade for desert highway[J],2011,32(1):33-38.
APA	Li Chi,&Gao Yu.(2011).Experimental studies of wind erosion failure of aeolian soils subgrade for desert highway.ROCK AND SOIL MECHANICS,32(1),33-38.
MLA	Li Chi,et al."Experimental studies of wind erosion failure of aeolian soils subgrade for desert highway".ROCK AND SOIL MECHANICS 32.1(2011):33-38.