干旱区生态环境知识资源中心(Arid): 尼龙网方格沙障防风效应复变规律

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	尼龙网方格沙障防风效应复变规律
其他题名	Compound Rules of Windproof Effect of Nylon Grid Sand Barrier
	魏翔鸿; 左合君; 闫敏; 贾光普
来源期刊	干旱区研究
ISSN	1001-4675
出版年	2019
卷号	36 期号:6 页码:1584-1591
中文摘要	方格沙障的布设参数直接影响防风效应的复变作用,定量表达其复变规律,对于沙障配置模式的确定具有重要意义。在乌兰布和沙漠机械整平的风沙观测场,铺设9种不同高度、规格的尼龙网方格沙障,观测其在不同风速背景下的风速流场特征,揭示方格沙障防风效应的复变规律。结果表明:尼龙网方格沙障防风效应复合变化受不同指示风速下,沙障高度与规格共同的影响。沙障内部0.1 m高度的风速随防护宽度的增加呈对数函数递减,指示风速增大1 m·s~(-1),风速衰减率增加0.07倍; 沙障高度增大0.1 m,风速衰减率增加0.20倍; 方格边长增大1 m,风速衰减率减小0.07倍。观测的9种规格方格沙障, 30 cm高度1 m * 1 m规格沙障复变作用最强, 15 cm高度2 m * 2 m规格沙障复变作用最弱。该结果可为确定沙障合理防护宽度、节约沙障铺设成本、优化沙障布设技术提供基础数据和理论支撑。
英文摘要	Nine kinds of nylon grid barriers with different heights and sizes were laid in the wind-blown sand observation filed in the Ulanbuh Desert. The characteristics of wind-flow field under different wind speeds and the compound rule of windproof effect of sand barriers were revealed. The results showed that the compound change of windproof effect of grid sand barriers was affected by the height and size of sand barrier under different wind speeds. The wind speed at 0.1-m height near the sand barrier was decreased logarithmically with the increase of windproof width,which indicated that the attenuation rate of wind speed near the sand barrier was increased by 0.07 times when the wind speed increased by 1 m·s~(-1); it was increased by 0.20 times when the height of sand barrier was increased by 0.1 m; and it was decreased by 0.07 times when the length of grid side was increased by 1 m. Among the nine kinds of grid sand barriers observed,compound effect of 1 m * 1 m sand barrier with 30-cm height was the highest,but that of 2 m * 2 m sand barrier with 15-cm height was the lowest. The results could provide the basic data and theoretical support for determining the reasonable windproof width of sand barrier, saving the layout cost of sand barrier,and optimizing the technology of sand barrier layout.
中文关键词	尼龙网沙障 ; 风速流场 ; 防风效应 ; 复变规律 ; 乌兰布和沙漠
英文关键词	nylon grid sand barrier wind flow windproof effect compound change Ulanbuh Desert
语种	中文
收录类别	CSCD
WOS类目	GEOSCIENCES MULTIDISCIPLINARY
WOS研究方向	Geology
CSCD记录号	CSCD:6621237
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/2XILL650/315928
作者单位	内蒙古农业大学沙漠治理学院, 内蒙古自治区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	魏翔鸿,左合君,闫敏,等. 尼龙网方格沙障防风效应复变规律[J]. 内蒙古农业大学,2019,36(6):1584-1591.
APA	魏翔鸿,左合君,闫敏,&贾光普.(2019).尼龙网方格沙障防风效应复变规律.干旱区研究,36(6),1584-1591.
MLA	魏翔鸿,et al."尼龙网方格沙障防风效应复变规律".干旱区研究 36.6(2019):1584-1591.