| 降雨冲刷对黄土公路边坡植物防护影响的试验研究 |
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| 引用本文： | 刘海松,倪万魁,杨泓全,颜斌.降雨冲刷对黄土公路边坡植物防护影响的试验研究[J].工程地质学报(英文版),2007,15(4):527-533. |
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| 作者姓名： | 刘海松 倪万魁 杨泓全 颜斌 |
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| 作者单位： | 1.长安大学地质工程与测绘学院,西安710054; |
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| 基金项目： | 自然基金项目(编号:40471023)，西部交通建设科技项目(合同号:200131800020). |
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| 摘 要： | 通过对裸露黄土公路边坡、厚层基材植草公路边坡、三维网植草公路边坡以及平台植树公路边坡的现场降雨冲刷试验,阐述了不同防护型式的公路黄土边坡在降雨条件下的坡面径流、含泥量以及坡面冲刷情况,得出了降雨对边坡坡面的侵蚀过程,首先是从雨滴直接打击土体开始,进而引起溅蚀,分散土粒,紧接着发生超渗径流造成坡面冲刷。以及对坡面破坏最大的是坡顶上方来水等重要结论。验证了坡面植物防护以及平台植树等防护方法可以有效降低降雨冲刷对坡面的侵蚀破坏,为黄土地区公路边坡植物防护的设计施工以提供了可靠的依据。
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| 关 键 词： | 黄土 公路边坡 植物防护 降雨冲刷 |
| 文章编号： | 1004-9665/2007/15(04)-0527-07 |
| 收稿时间： | 2006-12-11 |
| 修稿时间： | 2006-12-112007-03-01 |
A FIELD TEST OF RAINFALL EROSION ON LOESS - HIGHWAY -SLOPE WITH PLANT PROTECTION |
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| LIU Haisong,NI Wankui,YANG Hongquan,YAN Bin.A FIELD TEST OF RAINFALL EROSION ON LOESS - HIGHWAY -SLOPE WITH PLANT PROTECTION[J].Journal of Engineering Geology,2007,15(4):527-533. |
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| Authors: | LIU Haisong NI Wankui YANG Hongquan YAN Bin |
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| Institution: | 1.College of Geology Engineering and Geomatics,Chang’an University,Xi’an 710054;2.Key Laboratory of Western China’s Mineral Resources and Geological Engineering,Ministry of Education,Xi’an 710054;3.Institute of Engineering and urban Construction,Jiujiang University,Jiujiang 332005;4.Controlling Company of Highway and Bridge Engineering in Guangxi,Nanning 530000 |
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| Abstract: | Based on the filed-tests of rainfall erosion to the four kinds of highway-slopes:slope without protection,grass sowing in thick nourishment,grass sowing in three dimensional network and platform tree-planting,this paper expounds the effects of rainfall on different kinds of highway-slopes in the following aspects:hillslope-runoff,mud content and slope erosion.From the tests,two conclusions can be drawn.One is that the process of rainfall erosion to highway-slopes can be described as follows:the raindrop first clashes the soil,and then the clod is dispersed and finally the slope is eroded.The other is that the most serious erosion to slope is due to the water from platform upside.In the end,the paper demonstrates that the effective ways to reduce the rainfall erosion to slopes are plant protection such as grass sowing in three dimensional network and in thick nourishment or platform planting.It also provides a reliable basis for the design of plant protection to highway-slopes in loess areas. |
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| Keywords: | Loess Highway-slope Plant protection Rainfall simulator erosion |
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