干旱区生态环境知识资源中心(Arid): 不同高度双行尼龙阻沙网的合理间距研究

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	不同高度双行尼龙阻沙网的合理间距研究
其他题名	Study on reasonable spacing of double-row nylon sand-blocking nets with different heights
	贾光普; 左合君; 闫敏; 魏翔鸿; 韩雪莹
来源期刊	干旱区资源与环境
ISSN	1003-7578
出版年	2020
卷号	34 期号:1 页码:132-139
中文摘要	双排、多排高立式沙障其高效的防风阻沙作用在线路工程风沙防治中被广泛关注,阻沙网布设间距是沙障布设中首要解决的问题。基于阻沙网风速流场和输沙量测定结果,对乌兰布和沙漠穿沙公路间距12m高度为60cm、80cm、100cm和120cm阻沙网布设的合理性进行了研究。结果表明: ( 1)从风速流场分析,双排流场形式主要以"双峰型"为主,第二排阻沙网后的风速加速率极小值均小于第一排阻沙网后的风速加速率,即双排之间存在叠加效应。( 2)从集沙仪0 ~ 50cm的输沙量分析,近地表风速与输沙量之间符合幂函数关系为Q = 0.00004V5.9337 ,且4种高度的中间过渡区集沙仪输沙量均在4 ~ 8m范围内出现先下降后上升的趋势。 ( 3)在低风速( < 12m·s~(-1) )平坦的流沙环境下,双排阻沙网的合理布设间距分别为4m、5.5m、6.5m和8m。建议铺设带数可依据实际风况与线性沙害程度调整为: 60cm及以下3 ~ 4带,80-100cm高2 ~ 3带,120cm高1 ~ 2带。
英文摘要	Double-row and multi-row high vertical sand barriers have been widely concerned about their high-efficiency wind and sand-blocking effect in the sand-blown prevention and control for road engineering. The spacing of sand-blocking net is the primary problem to be solved in the sand-blocking layout. Based on the measurements of wind speed,flow field and sediment transport volume of sand-blocking network,the rationality of the arrangement of sand-blocking network with equal spacing 12m and different heights 60cm,80cm,100cm and 120cm on the desert-crossing highway in Ulanbuh Desert were studied. The results show that: ( 1) From the analysis of wind speed and flow field,the double-row flow field is mainly " double-peak type". The minimum wind speed acceleration rate after the second row of sand-blocking net is less than that after the first row of sand-blocking net,that is,there is a superposition effect between the two rows. ( 2) From the sediment transport analysis of 0-50cm sediment collector,the power function relationship between near-surface wind speed and sediment transport is Q = 0.00004V5.9337,and the sediment transport of sediment collector in the intermediate transition zone of four heights shows a downward trend and then an upward trend in the range of 4-8m. ( 3) Under the condition of low wind speed ( < 12m·s~(-1) ) and flat drifting sand,the reasonable spacing of double-row sand-blocking network is 4m,5.5m,6.5m and 8m,respectively. It is suggested that the number of laying zones can be adjusted according to the actual wind conditions and the degree of linear sand damage as follows: 60cm and below 3-4 zones,80-100cm high 2-3 zones and 120cm high 1-2 zones.
中文关键词	风速流场 ; 输沙量 ; 有效防护距离 ; 双排阻沙网
英文关键词	wind speed field sediment discharge effective protection distance double-row sand net
语种	中文
收录类别	CSCD
WOS类目	METEOROLOGY ATMOSPHERIC SCIENCES
WOS研究方向	Meteorology & Atmospheric Sciences
CSCD记录号	CSCD:6685706
来源机构	内蒙古农业大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/318430
作者单位	内蒙古农业大学沙漠治理学院, 内蒙古风沙物理与防沙治沙工程重点实验室, 呼和浩特, 内蒙古 010011, 中国
推荐引用方式 GB/T 7714	贾光普,左合君,闫敏,等. 不同高度双行尼龙阻沙网的合理间距研究[J]. 内蒙古农业大学,2020,34(1):132-139.
APA	贾光普,左合君,闫敏,魏翔鸿,&韩雪莹.(2020).不同高度双行尼龙阻沙网的合理间距研究.干旱区资源与环境,34(1),132-139.
MLA	贾光普,et al."不同高度双行尼龙阻沙网的合理间距研究".干旱区资源与环境 34.1(2020):132-139.