img

Wechat

  • CN 62-1070/P
  • ISSN 1000-694X
  • Bimonthly 1981
Adv search

Wind-protecting Efficiency of HDPE Functional Sand-fixing Barriers

  • Qu Jianjun ,
  • Yu Wenbo ,
  • Qin Xiaobo
Expand
  • 1. Key Laboratory of Desert and Desertification/Dunhuang Gobi and Desert Ecological and Environmental Research Station/Gansu Center for Sand Hazard Reduction Engineering and Technology, Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou 730000, China;
    2. The Unit 63607 of PLA, Jiuquan 735000, Gansu, China

Received date: 2013-12-29

  Revised date: 2014-04-14

  Online published: 2014-09-20

Abstract

Based on the bionics principle, according to the porosity structure (thin upper and close lower) of straw checkerboard sand-fixing barriers which were widely used and had got significant protective benefits, functional sand-fixing barriers was made of High Density Polyethylene (HDPE) materials with the advantages of the anti-ultraviolet, long lifetime, and extreme temperature resistance. Through wind tunnel simulations, the wind-protecting efficiency was compared between uniform HDPE sand-fixing barriers and two kinds of functional HDPE sand-fixing barriers. The results showed that: (1) The effective protection distances of the three sand-fixing barriers exponentially decreased with wind speed increase. (2) The total effective protection distances of uniform sand-fixing barriers were longer than functional sand-fixing barriers under low wind speeds (<14 m·s-1) conditions; whereas lower under high wind speeds (>14 m·s-1) conditions. No matter how strong the winds were, the effective protection distances between nets of functional sand-fixing barriers were far longer than uniform sand-fixing barriers. (3) Both uniform HDPE sand-fixing barriers net and functional HDPE sand-fixing barriers net can substitute the traditional sand-fixing barrier materials, and have high application value and good popularization prospect. But functional sand-fixing barriers nets were suitable for making low semi-buried checkerboard sand-fixing barriers, whereas uniform sand-fixing barriers nets were more suitable for making upright sand-blocking barriers.

Cite this article

Qu Jianjun , Yu Wenbo , Qin Xiaobo . Wind-protecting Efficiency of HDPE Functional Sand-fixing Barriers[J]. Journal of Desert Research, 2014 , 34(5) : 1185 -1193 . DOI: 10.7522/j.issn.1000-694X.2013.00446

References

[1] 王涛.中国风沙防治工程[M].北京:科学出版社,2011.
[2] 朱震达,赵兴梁,凌裕泉.治沙工程学[M].北京:中国环境科学出版社,1998.
[3] 吴正,董治宝,李保生,等.风沙地貌与治沙工程学[M].北京:科学出版社,2003.
[4] 王文彪,党晓宏,张吉树,等.库布齐沙漠北缘不同作物秸秆平铺式沙障的防风效能[J].中国沙漠,2013,33(1):65-71.
[5] Dierickx W,Gabriels D,Cornelis W.A wind tunnel study on wind speed reduction of technical textiles used as windscreen[J].Geotextiles and Geomembranes,2001,19(1):59-73.
[6] 刘虎俊,王继和,李毅,等.塑料网方格沙障对新月形沙丘迎风坡的风沙流影响[J].水土保持学报,2011,25(5):26-29.
[7] 屈建军,凌裕泉,刘贤万,等.尼龙网栅栏防沙效应研究[J].兰州大学学报(自然科学版),2002,38(2):171-176.
[8] 张克存,屈建军,俎瑞平,等.不同结构的尼龙网和塑料网防沙效应研究[J].中国沙漠,2005,25(4):483-487.
[9] Qu J J,Han Q J,Dong G R,et al.A study of the characteristics of aeolian sand activity and the effects of a comprehensive protective system in a coastal dune area in southern China[J].Coastal Engineering,2013,77:28-39.
[10] 唐玉龙.青藏铁路西格段戈壁风沙流防治体系研究[J].中国沙漠,2013,33(1):72-76.
[11] 孙昌峰,陈光辉,范军领,等.防风抑尘网研究进展[J].化工进展,2011,30(4):871-877.
[12] Cornelis W M,Gabriels D.Optimal windbreak design for wind-erosion control[J].Journal of Arid Environments,2005,61(2):315-332.
[13] Dong Z B,Qian G Q,Luo W Y,et al.Threshold velocity for wind erosion:the effects of porous fences[J].Environ Geol,2006,51(3):471-475.
[14] Bitog J P,Lee I B,Shin M H,et al.Numerical simulation of an array of fences in Saemangeum reclaimed land[J].Atmospheric Environment,2009,43(30):4612-4621.
[15] Kim H B,Lee S J.Hole diameter effect on flow characteristics of wake behind porous fences having the same porosity[J].Fluid Dynamics Research,2001,28(6):449-464.
[16] 罗万银,董治宝,钱广强.栅栏最佳孔隙度的空气动力学评价[J].中国沙漠,2009,29(4):583-588.
[17] 罗万银,董治宝,钱广强,等.栅栏防护体系空气动力学效应研究进展[J].中国沙漠,2012,32(4):885-895.
[18] Yeh C P,Tsai C H,Yang R J.An investigation into the sheltering performance of porous windbreaks under various wind directions[J].Journal of Wind Engineering and Industrial Aerodynamics,2010,98(10/11):520-532.
[19] Rosenberg N J.Microclimate:The Biological Environment[M].New York,USA:Wiley,1974.
[20] Huang L-M,Chan H,Lee J-T.A numerical study on flow around nonuniform porous fences[J].Journal of Applied Mathematics,2012,100:1-12.
[21] Raine J K,Stevenson D C.Wind protection by model fences in a simulated atmospheric boundary layer[J].Journal of Wind Engineering and Industrial Aerodynamics,1977,2(2):159-180.
[22] Hagen L J.Windbreak design for optimum wind erosion control[C]//Proceedings of the Symposium:Shelterbelts on the Great Plains.Denver,USA,1976:20-22.
[23] Iversen J D.Comparison of wind-tunnel model and full-scale snow fence drifts[J].Journal of Wind Engineering and Industrial Aerodynamics,1981,8(3):231-249.
[24] 刘贤万.实验风沙物理与风沙工程学[M].北京:科学出版社,1995.
Outlines

/