文献类型：期刊文献

中文题名：草原矿区排土场边坡苇帘沙障防风效能研究

英文题名：Study on Windbreak Effectiveness of Reed Curtain Sand Barriers on Slopes of a Grassland Mine Discharge Site

作者：王银龙[1,2] 张格[3] 许丽[1,2] 丛龙宇[4]

第一作者：王银龙

机构：[1]内蒙古农业大学沙漠治理学院,呼和浩特010011;[2]内蒙古自治区风沙物理重点实验室,呼和浩特010011;[3]中国林业科学研究院沙漠林业实验中心,磴口015200;[4]翁牛特水利局,乌丹024500

年份：2025

卷号：46

期号：3

起止页码：30-36

中文期刊名：内蒙古农业大学学报(自然科学版)

外文期刊名：Journal of Inner Mongolia Agricultural University(Natural Science Edition)

收录：;北大核心:【北大核心2023】；

基金：内蒙古自治区科技重大专项项目(2020ZD0020-2)。

语种：中文

中文关键词：苇帘沙障;防风效能;空气动力学粗糙度;风速廓线;土壤粒径

外文关键词：Reed screen sand barrier;Wind protection efficiency;Aerodynamic roughness;Wind speed profile;Soil particle size

分类号：S157

摘要：为了研究苇帘沙障在矿区排土场边坡的防风效果,本文以排土场边坡3种规格(0.5 m×0.5 m、1.0 m×1.0 m、1.5 m×1.5 m)的苇帘沙障为研究对象,以无沙障边坡为对照,研究不同规格沙障的防风效能、空气动力学粗糙度、风速廓线、表层土壤粒径和养分的变化特征。结果表明:(1)在排土场边坡布设沙障可以有效地降低地表风速,3种规格苇帘沙障防风效能呈现出0.5 m×0.5 m>1.0 m×1.0 m>1.5 m×1.5 m;防风效能最大值(72.19%)出现在0.5 m×0.5 m沙障10 cm高度处,并随着观测高度的增加呈降低趋势。(2)空气动力学粗糙度和摩阻风速均随着沙障规格增大呈降低趋势,3种规格苇帘沙障风速廓线呈“S”形变化趋势,对照区风速廓线呈现指数分布,3种规格沙障的风速廓线在10~30 cm高度范围增长小于30~50 cm。(3)排土场边坡布设3种规格沙障3 a后,土壤粉粒含量分别比相应对照区提高了16.69%、14.79%和14.29%,极粗沙粒含量分别比对照区降低了13.80%、13.21%和11.29%,沙障布设削弱了风沙流对排土场边坡的吹蚀,促进了土壤养分的累积。综上所述,矿区排土场边坡布设苇帘沙障能有效降低近地表风速,削弱地表风蚀,促进土壤养分累积,其中0.5 m×0.5 m规格苇帘沙障防风效果最好。
In order to investigate the wind protection efficiency of reed curtain sand barriers on slopes in mining areas,three different sizes of reed curtain sand barriers(i.e.,0.5 m×0.5 m,1.0 m×1.0 m,1.5 m×1.5 m)were used as the research objects,with slopes lacking sand barriers as the control group.The wind protection efficiency,aerodynamic roughness,wind speed profile,and changes in surface soil particle size and nutrients of different barrier sizes were studied.The results showed that,the installation of sand barriers on slopes effectively reduced surface wind speed.The wind protection efficiency of the three specifications of reed curtain sand barriers ranked as follows:0.5 m×0.5 m>1.0 m×1.0 m>1.5 m×1.5 m.The maximum wind protection efficiency(72.19%)was observed at a height of 10 cm for the 0.5 m×0.5 m barrier,decreasing with increasing observation height.Both aerodynamic roughness and friction wind speed decreased as the barrier size increased.The wind speed profile of the three reed screen sand barrier sizes exhibited an"s"shape,while the control area's wind speed profile followed an exponential distribution.The wind speed profiles for the three barrier sizes grew less between 10 cm to 30 cm compared to the range of 30 cm to 50 cm.After three years of sand barriers installation,the silt content in the soil on the slopes increased by 16.69%,14.79%,and 14.29%compared to the control areas,while the very coarse sand content decreased by 13.80%,13.21%,and 11.29%,respectively.The installation of sand barriers weakened the wind erosion on the slopes and promoted the accumulation of soil nutrients.In summary,the installation of reed curtain sand barriers on slopes in mining areas could effectively reduce near-surface wind speed,mitigate surface wind erosion,and promote soil nutrient accumulation.Among the barriers,the 0.5 m×0.5 m reed screen sand barrier showed the highest wind protection efficiency.