| 戈壁地区公路防沙措施防沙效应的风洞试验 |
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| 引用本文： | 尤全刚,薛娴,王涛,赵发章,张伟民,刘光琇,俎瑞平,韩邦帅,连富铖.戈壁地区公路防沙措施防沙效应的风洞试验[J].中国沙漠,2011,30(3):550-557. |
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| 作者姓名： | 尤全刚 薛娴 王涛 赵发章 张伟民 刘光琇 俎瑞平 韩邦帅 连富铖 |
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| 作者单位： | 1. 中国科学院寒区旱区环境与工程研究所沙漠与沙漠化重点实验室,甘肃兰州,730000
2. 甘肃省交通厅工程处,甘肃兰州,730030 |
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| 基金项目： | 甘肃省交通厅科技项目“戈壁地区公路风沙危害综合防治体系研究”(O553801001)资助 |
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| 摘 要： | 以穿越河西走廊西部戈壁荒漠的嘉峪关至安西一级公路为研究对象,基于风洞模拟试验,针对不同类型公路路基横断面和防护措施设计模型,采用粒子图像测速系统,研究模型的流场变化,进而探讨戈壁公路风沙危害形成机理及防沙措施。研究结果表明:①由于研究区内风沙活动以不饱和风沙流为主,携沙风对公路路基掏蚀、磨蚀严重,需要对路基边坡进行有效砌护;②为了在公路表面形成输沙通道,中央隔离带地表与行车路面应保持同一高度,隔离带采用空隙度大于30%的疏透型;③在公路两侧沙源丰富地段,公路边坡的坡角应小于40°,并且取消防洪沟,以防止沟内积沙;④在沙源丰富地区,公路两侧由外到内依次铺设草方格、覆盖砾石、设置积沙沟的防沙带,可以减少气流中的含沙量,阻止流沙上路,有效解决公路风沙危害问题。
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| 关 键 词： | 戈壁公路 风洞模拟 粒子图像测速系统 路基横断面 防护措施 |
| 收稿时间： | 2010-7-26 |
| 修稿时间： | 2010-11-17 |
Wind Tunnel Experiment of the Effect of Sand Prevention Measures along Gobi Highway |
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| YOU Quan-gang
,
XUE Xian
,
WANG Tao
,
ZHAO Fa-zhang
,
ZHANG Wei-min
,
LIU Guang-xiu
,
ZU Rui-ping
,
HAN Bang-shuai
,
LIAN Fu-cheng.Wind Tunnel Experiment of the Effect of Sand Prevention Measures along Gobi Highway[J].Journal of Desert Research,2011,30(3):550-557. |
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| Authors: | YOU Quan-gang XUE Xian WANG Tao ZHAO Fa-zhang ZHANG Wei-min LIU Guang-xiu ZU Rui-ping HAN Bang-shuai LIAN Fu-cheng |
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| Institution: | YOU Quan-gang1,XUE Xian1,WANG Tao1,ZHAO Fa-zhang2,ZHANG Wei-min1,LIU Guang-xiu1,ZU Rui-ping1,HAN Bang-shuai1,LIAN Fu-cheng2(1.Key Laboratory of Desert and Desertification,Cold and Arid Regions Environmental and Engineering Research Institute,Chinese Academy of Sciences,Lanzhou 730000,China,2.Project Division,Communication Department of Gansu Province,Lanzhou 730030,China) |
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| Abstract: | Wind erosion and sand sediment are two main problems affecting highways in Gobi area of Western China.This paper investigated the effect of sand prevention measures on highways in Gobi area by simulating different highway segments and sand prevention designs in wind tunnel and surveying fields by Particle Image Velocimetry.The wind tunnel experiment results indicated that unsaturated blown sand flow played a dominant role in the sapping and abrasion of highway cross section and some effective protection mea... |
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| Keywords: | highway in Gobi wind tunnel simulation Particle Image Velocitmetry subgrade cross section protection measures |
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