| 黄土高原造林边坡应力应变特征及其稳定性分析 |
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| 引用本文： | 刘秀萍,陈丽华,张心平,高振林,宋维峰.黄土高原造林边坡应力应变特征及其稳定性分析[J].北京林业大学学报,2008,30(5):97-103. |
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| 作者姓名： | 刘秀萍 陈丽华 张心平 高振林 宋维峰 |
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| 作者单位： | 1 北京林业大学水土保持学院，水土保持与荒漠化防治教育部重点实验室2 中国科学院遗传与发育生物学研究所农业资源研究中心3 中国农业大学水利与土木工程学院4 北方工业大学建筑工程学院5 西南林学院环境科学与工程系 |
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| 基金项目： | 国家自然科学基金，国家重点基础研究发展计划(973计划) |
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| 摘 要： | 该文以刺槐林、油松林固坡为例，运用有限元方法分析刺槐和油松林边坡的应力和变形特性，探讨不同根型树种对边坡稳定性的影响。结果表明:油松能将表层土体的应力通过根系传递到深层，起到弱化浅层土体应力的作用，提高边坡的稳定性。刺槐林边坡坡脚向土体内侧存在一个位移集中带，是边坡不稳定的主要部位；在边坡偏上部出现位移集中带，最大位移也出现在边坡偏上部，是边坡变形滑动时“滑出”的位置。油松林边坡未出现上述两种情况,说明油松林显著提高了边坡的稳定性，油松根系的固土作用及增加边坡稳定性效果要好于刺槐林边坡。
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| 关 键 词： | 刺槐 油松 根系 有限元法 |
| 收稿时间： | 1900-01-01 |
Stress-strain characteristics and stability of forest slope in the Loess Plateau |
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| LIU Xiu-ping,CHEN Li-hua,ZHANG Xin-ping,GAO Zhen-lin,SONG Wei-feng. Key Laboratory of Soil , Water Conservation & Desertification Combating of Ministry of Education,School of Soil , Water Conservation,Beijing Forestry University,P.R.China, Center for Agricultural Resource Research.Stress-strain characteristics and stability of forest slope in the Loess Plateau[J].Journal of Beijing Forestry University,2008,30(5):97-103. |
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| Authors: | LIU Xiu-ping CHEN Li-hua ZHANG Xin-ping GAO Zhen-lin SONG Wei-feng Key Laboratory of Soil Water Conservation & Desertification Combating of Ministry of Education School of Soil Water Conservation Beijing Forestry University PRChina Center for Agricultural Resource Research |
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| Institution: | LIU Xiu-ping~(1,2),CHEN Li-hua~1,ZHANG Xin-ping~3,GAO Zhen-lin~4,SONG Wei-feng~5.1 Key Laboratory of Soil , Water Conservation & Desertification Combating of Ministry of Education,School of Soil , Water Conservation,Beijing Forestry University,100083,P.R.China,2 Center for Agricultural Resource Research,Institute of Genetic , Development Biology,Chinese Academy of Sciences,Shijiazhuang,050021,3 College of Water Conservancy & Civil Engineering,China Agricultural University,Beijing,P.R.... |
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| Abstract: | Taking slope protection of Robinia pseudoacacia and Pinus tabulaeformis forests for example,based on finite element method(FEM),the stress and deformation characteristics of Robinia pseudoacacia and Pinus tabulaeformis forest slopes were studied and the effect of different root architectures on the slope stability were analyzed.Results show that Pinus tabulaeformis was capable to transfer superficial soil stress to deep soil,reduce superficial stress through root system and improve the slope stability.The c... |
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| Keywords: | Robinia pseudoacacia Pinus tabulaeformis root system finite element method |
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