黄土高原造林边坡应力应变特征及其稳定性分析

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

Stress-strain characteristics and stability of forest slope in the Loess Plateau

1 Key Laboratory of Soil and Water Conservation & Desertification Combating of Ministry of Education, School of Soil and Water Conservation, Beijing Forestry University, 100083, P. R. China; 2 Center for Agricultural Resource Research, Institute of Genetic and Development Biology, Chinese Academy of Sciences, Shijiazhuang, 050021, P. R. China; 3 College of Water Conservancy & Civil Engineering, China Agricultural University, Beijing, 100083, P. R. China; 4 College of Architectural Engineering, North China University of Technology, Beijing, 100041, P. R. China; 5 Department of Environmental Science and Engineering, Southwest Forestry College, Kunming, 650224, P. R. China.

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。
- 刺槐 /
- 油松 /
- 根系 /
- 有限元法
- Robinia pseudoacacia /
- Pinus tabulaeformis /
- root system /
- finite element method