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当前位置: 首页 > 文章 > 张集铁路典型工程风力侵蚀试验及规律研究 水土保持学报 2008,22 (2) 47-50
Position: Home > Articles > Research on Experiments and Laws of Wind Erosion in Typical Projects of Zhangji Railway Construction Journal of Soil and Water Conservation 2008,22 (2) 47-50

张集铁路典型工程风力侵蚀试验及规律研究

作  者：
匡星;白明洲;王连俊;姜龙
单  位：
北方交通大学土建学院交通环境所生态环境研究中心
关键词：
风力侵蚀;铁路工程;输沙率;风沙流结构
摘  要：
随着在风力侵蚀区交通工程建设的增多,交通线路风力侵蚀问题日益受到关注。通过选取张集铁路,进行路堤、取土场和便道试验,对其输沙率和风速关系、风沙流结构和风蚀运动规律进行分析。结果表明,路堤边坡不同部位输沙率与风速存在明显的幂函数关系;设计高度为3 m路堤的风蚀现象与风速和风向无明显关系,随着风速增大趋势由迎风坡向背风坡移动,设计高度为6 m和9 m的路堤风蚀现象与坡面高度、风速和风向有较明显规律,但风蚀趋势变化不明显;大于6.7 m/s时,便道和取土场不同部位点均发生风蚀现象。以上研究规律可以为工点防护设计以及环境评价工作提供参考。
译  名：
Research on Experiments and Laws of Wind Erosion in Typical Projects of Zhangji Railway Construction
作  者：
KUANG Xing,BAI Ming-zhou,WANG Lian-jun,JIANG Long(Ecological Environment Research Center,School of Civil Engineering and Architecture,Beijing Jiaotong University,Beijing 100044)
关键词：
wind erosion;railway construction;sand transport flux;blown-sand structure
摘  要：
With incremented railway construction in wind erosion areas,the problem of wind erosion of railway construction demand more attentions.Experiments are designed against road embankments,soil-excavated fields and sidewalks of Zhangji railway,in order to analyze the relation between the wind speed and sand transport flux,blown-sand structure and sand transport movement.The findings indicate that there is an obvious index relationship between wind speed and sand transport flux in different parts of embankment slope.With variation of blown-sand structure parameters in different parts,erosion of 3-meter design height embankment is independent of wind speed and wind direction and erosion phenomena translate from upwind side to leeward slope side as the wind speed increases and evident relationship between erosion,wind speed and wind direction of not less than 6-meter design height embankment shows up,yet with unobvious wind erosion movement.Wind erosion occurs in diversified segments of sidewalk and soil-excavated fields when wind speed surpasses soil starting wind speed.Studies and conclusions can contribute to the protection layout,construction and environment evaluation both in experimental and theoretical perspective.

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