文章摘要
杨建英,韩成军,叶海英,祁有祥,赵廷宁.华北地区公路土质边坡土壤侵蚀实验研究[J].水土保持通报,2008,(4):121~125
华北地区公路土质边坡土壤侵蚀实验研究
Experimental Research on Soil Erosion on Earth Side Slope of Highways in North China
投稿时间:2008-01-08  修订日期:2008-03-09
DOI:
中文关键词: 土质边坡  模拟  土壤侵蚀试验
英文关键词: earth side slope  simulation  soil erosion experiment
基金项目:
作者单位
杨建英 北京林业大学水土保持学院, 北京 100083 
韩成军 北京林业大学水土保持学院, 北京 100083
青海省水土保持局, 青海西宁 810001 
叶海英 北京林业大学水土保持学院, 北京 100083 
祁有祥 北京林业大学水土保持学院, 北京 100083 
赵廷宁 北京林业大学边坡绿化研究所, 北京 100083 
摘要点击次数: 418
全文下载次数: 1560
中文摘要:
      公路建设过程中产生的水土流失非常严重。在标定人工降雨器降雨参数的基础上,研究了华北地区公路土质边坡水土流失规律。结果表明,土体硬度、前期土壤含水量、降雨强度相同条件下,土壤侵蚀量随坡度的增大而增加,在25°附近达最大值,之后随坡度的增加侵蚀量略有下降并渐趋稳定;土壤侵蚀量随土体硬度的加大而减小,且降雨强度越大这种影响愈显著;前期土体含水量愈大,土壤侵蚀量呈增大趋势。本研究可为科学评价工程土质边坡的水土流失提供依据。
英文摘要:
      Soil erosion generated by road construction project is significantly serious.Based on the calibration of the characteristics of rainfall simulator , side slope of different gradients and different degrees of compactness formed in road construction process is studied.Results show that soil erosion is aggravated with increased slop gradient.Soil erosion rate reaches a peak at about 25° , beyond which it begins to decrease and finally goes to a steady state.Moreover , soil erosion is alleviated with increased soil hardness and this trend is more obvious if rainfall intensity becomes much stronger.Additionally , soil erosion is aggravated with the increasing of antecedent soil water content.This study may provide a basis for the scientific evaluation of soil erosion on earth side slope in an engineering project.
查看全文   查看/发表评论  下载PDF阅读器
关闭