南疆戈壁区HDPE板沙障风沙防护机理及效果评价

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英文篇名：Prevention Mechanism and Effect Evaluation of HDPE Sand Barrier in Gobi Area of Southern Xinjiang 作者：李凯崇 ; 周沁 ; 丁录胜 ; 魏永杰 ; 孔令伟 英文作者：LI Kaichong;ZHOU Qin;DING Lusheng;WEI Yongjie;KONG Lingwei;Technical Center, Northwest Research Institute Co., Ltd.,of CREC;Geku Railway Xinjiang Construction Headquarters, China Railway Urumqi Group Co., Ltd.;Geological and Subgrade Design Department, Xinjiang Railway Survey and Design Institute Co., Ltd.; 关键词：风沙防治 ; HDPE板沙障 ; 格库铁路 ; 风沙流 ; 阻沙率 ; 沙障高度 英文关键词：Prevention and treatment of wind drift sand;;HDPE sand barrier;;Golmud-Korla Railway;;Sand drift;;Sand-blocking rate;;Sand barrier height 中文刊名：ZGTK 英文刊名：China Railway Science 机构：中铁西北科学研究院有限公司技术中心;中国铁路乌鲁木齐局集团有限公司格库铁路新疆建设指挥部;新疆铁道勘察设计院有限公司地路处; 出版日期：2019-05-15 出版单位：中国铁道科学 年：2019 期：v.40;No.166 基金：中国铁路总公司科技研究开发计划课题(2017G004-E) 语种：中文; 页：ZGTK201903002 页数：5 CN：03 ISSN：11-2480/U 分类号：12-16

摘要

依托格库铁路风沙防护工程,通过不同类型风沙防护措施前后流场和输沙率的测定,研究新型HDPE板沙障风沙防治机理及效果。结果表明:风沙流途经HDPE板沙障后,会在障后的0.5～10倍沙障高度范围内形成1个明显的绝对低速区,其1/2障高处的最大风力消减率可达94.4%;在沙障高度范围内,阻沙率呈现一定的正态分布,最大阻沙率出现在1/2障高附近;风速与阻沙率呈负相关性,风速越高,阻沙率越低;风速在0～16 m·s~(-1)范围内,单道HDPE板沙障的总阻沙率超过70%;当2道沙障的布设间距为5～15倍沙障高度范围内时,沙障的布设间距与整体阻沙率呈一定的负相关性,但整体差异不明显。
        Based on the wind and sand protection project of Golmud-Korla Railway, the mechanism and effect of the new HDPE sand barrier were studied by measuring the flow field and sediment transport rate before and after different types of wind and sand protection measures. The research shows that, after the sand drift passes through HDPE sand barrier, there will be an obvious absolute low speed zone in the height of 0.5 to 10 times sand barrier behind the barrier, and the maximum wind reduction rate at the 1/2 barrier height can reach 94.4%. In the height range of sand barrier, the sand resistance rate shows a normal distribution, and the maximum sand resistance rate appears near the height of 1/2 barrier. There is a negative correlation between wind speed and sand resistance rate. The higher the wind speed, the lower the sand resistance rate. The total sand resistance rate of the single channel HDPE sand barrier exceeds 70% in the range of wind speed from 0 to 16 m·s~(-1). When the spacing between two sand barriers is within the range of 5 to 15 times the height of sand barrier, there is a certain negative correlation between the spacing of sand barrier and the overall sand resistance rate, but the overall difference is not obvious.

引文

[1] 王让会,周兴佳,张惠珍.新疆土地荒漠化灾害及其对策[J].南京林业大学学报:自然科学版,2002,26(2):32-36.(WANG Ranghui,ZHOU Xingjia,ZHANG Huizhen.Desertification Disasters and Their Countermeasures in Xinjiang [J].Journal of Nanjing Forestry University:Natural Sciences Edition,2002,26(2):32-36.in Chinese)
    [2] 程国栋,王根绪.中国西北地区的干旱与旱灾—变化趋势与对策[J].地学前缘,2006,13(1):3-14.(CHENG Guodong,WANG Genxu.Changing Trend of Drought Disaster in Northwest China and Countermeasures[J].Earth Science Frontiers,2006,13(1):3-14.in Chinese)
    [3] 杨旭.格库铁路台特玛湖区段风沙流特征及工程设置[J].铁道工程学报,2017,34(10):25-29.(YANG Xu.The Wind-Sand Flow Characteristics and Engineering Installation of the Section of Taitema Lake on Golmud-Korla Railway[J].Journal of Railway Engineering Society,2017,34(10):25-29.in Chinese)
    [4] 蔡成哲.新建铁路格库线路基风沙病害特征分析及防治对策[J].铁道勘察,2015,41(5):58-60.(CAI Chengzhe.The Analysis and Prevention of Wind-Borne Sand of the New Railway Project from Geermu to Kuerle[J].Railway Investigation and Surveying,2015,41(5):58-60.in Chinese)
    [5] 辛文栋.干旱地区高速铁路路基技术体系研究[J].铁道工程学报,2017,34(9):14-17,28.(XIN Wendong.Research on the Technique System of High Speed Railway Subgrade in Arid Region[J].Journal of Railway Engineering Society,2017,34(9):14-17,28.in Chinese)
    [6] 李凯崇,刘贺业,蒋富强,等.斜插板挡沙墙风沙防治现场试验研究[J].中国铁道科学,3013,34(2):46-50.(LI Kaichong,LIU Heye,JIANG Fuqiang,et al.Field Test Study on the Prevention and Treatment of Wind Drift Sand by Retaining Wall with Inclined Plank [J].China Railway Science,2013,34(2):46-50.in Chinese)
    [7] MCKENNA Neuman C.Effects of Temperature and Humidity upon the Transport of Sedimentary Particles by Wind[J].Sedimentology,2004,51(1):1-17.
    [8] ZHANG Kecun,QU Jianjun,LIAO Kongtai,et al.Damage by Wind-Blown Sand and Its Control along Qinghai-Tibet Railway in China[J].Aeolian Research,2010,1(3/4):143-146.
    [9] 郝晓杰,熊治文,蒋富强,等.青藏铁路不同防沙栅栏的布设位置研究[J].铁道标准设计,2012,56(4):16-20.(HAO Xiaojie,XIONG Zhiwen,JIANG Fuqiang,et al.Research on the Positions of Various Kinds of Sand Barriers in Qinghai-Tibet Railway [J].Railway Standard Design,2012,56(4):16-20.in Chinese)
    [10] 康向光,李生宇,马学喜,等.两条尼龙阻沙网不同组合间距的积沙量对比分析 [J].干旱区研究,2015,32(2):347-353.(KANG Xiangguang,LI Shengyu,MA Xuexi,et al.Sand Masses Blocked by Double Nylon Mesh Sand Barriers with Different Intervals [J].Arid Zone Research,2015,32(2):347-353.in Chinese)