干旱区生态环境知识资源中心(Arid): 穿沙公路沙柳防护带平茬恢复期辅助沙障设置模式优选

Arid

	穿沙公路沙柳防护带平茬恢复期辅助沙障设置模式优选
其他题名	Optimization of the sand barrier’s set mode during stumping convalescence of Salix psammophila protection belt on desert crossing highway
	裴志永 1; 乔敬伟 1; 秦伟 2; 段广东 1; 郝少荣 1; 王国忠 1
来源期刊	林业工程学报
ISSN	2096-1359
出版年	2019
卷号	4 期号:4 页码:127-134
中文摘要	为防止穿沙公路路侧地表和路面在沙柳防护带平茬恢复期内被风蚀和沙埋,设置纱网沙障予以防护,并探究其发挥阻、输沙能力的最优设置模式。在沙柳防护带迎风侧,设置不同距离和角度的纱网沙障,对各模式下的风速和输沙率进行观测,计算粗糙度并分析。研究结果表明:设置距沙柳防护带不同距离的纱网沙障,风速流场等值线分布不同,其中距离为3倍障高时风速降低和恢复的速率较其他两个距离更快,且风速衰减幅度最大点所对应位置在沙柳防护带范围内;沙柳防护带内地表粗糙度均大于旷野(7.33倍以上),设置角以45°为最优;减少输沙率随纱网沙障设置角度的增加而减小,且均大于88.08%,距离为3倍障高时各角度减少输沙率均值为89.14%,对近地表风沙流控制效果最为明显。综合对比分析,纱网沙障最优设置模式为:沙柳防护带迎风侧3倍障高处,与地面夹角45°。
英文摘要	Road surface and highway pavement would be easily damaged by wind erosion and sand burial during stumping convalescence of Salix psammophila protective belt on the desert crossing highway. Therefore, the gauze sand barrier was set up for protection of road surface,and its mode of arrangement high limit sand resistance and sediment transport were explored. On the windward side of S. psammophila protective belt, the gauze sand barrier was set at different angles and at different distances of S. psammophila protective belt’s windward side. The wind speed and sediment transport rate were observed, and the roughness was analyzed in different modes. As the distance from gauze sand barrier to S. psammophila protection belt varied, the results showed that the distribution of wind speed flow isoline was different. The isoline was the densest when the distance was 3 times greater than the barrier height. In addition, the corresponding position with the maximum attenuation of wind speed was within the scope of the S. psammophila protective belt. And the maximum rate of the wind speed reduction and recovery were compared with the other two distance arrangements. The surface roughness within S. psammophila protective belt was markedly increased and greater than the open field (more than 7.33 times),and the best setting angle was 45°. The reduction of the sediment transport rate decreased with the increase of the setting angle of the gauze sand barrier,and all of them were greater than 88.08%. The effect of control to wind sand flow on surface was the most obvious when the gauze sand barrier was 3 times greater than barrier height from S. psammophila protective belt, and the average of transport rate was 89.14%. Above all, the optimum mode of arrangement gauze sand barrier should be set 3 times greater than the barrier height and had an angle of 45°.
中文关键词	穿沙公路 ; 沙柳防护带 ; 纱网沙障 ; 风蚀 ; 沙埋
英文关键词	desert crossing highway Salix psammophila protection belt gauze sand barrier wind erosion sand burial
语种	中文
国家	中国
收录类别	CSCD
WOS类目	FORESTRY
WOS研究方向	Forestry
CSCD记录号	CSCD:6534072
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/2XILL650/239301
作者单位	1.内蒙古农业大学能源与交通工程学院, 呼和浩特, 内蒙古 010018, 中国; 2.内蒙古建筑职业技术学院市政与路桥工程学院, 呼和浩特, 内蒙古 010070, 中国
推荐引用方式 GB/T 7714	裴志永,乔敬伟,秦伟,等. 穿沙公路沙柳防护带平茬恢复期辅助沙障设置模式优选[J]. 内蒙古农业大学,2019,4(4):127-134.
APA	裴志永,乔敬伟,秦伟,段广东,郝少荣,&王国忠.(2019).穿沙公路沙柳防护带平茬恢复期辅助沙障设置模式优选.林业工程学报,4(4),127-134.
MLA	裴志永,et al."穿沙公路沙柳防护带平茬恢复期辅助沙障设置模式优选".林业工程学报 4.4(2019):127-134.