中文摘要：

采用直剪仪对2种沙生植物的重塑的根~土复合体及素土进行快剪试验,探讨其抗剪强度以及根径和垂直压力对抗剪强度的影响,结果表明:柠条(Caragana m icrophyllaLam.)、沙地柏(Sabina valgarisAnt.)根~土复合体在1.5m(25kPa)的浅层土体范围内抗剪强度均大于素土,2种植物根~土复合体的综合内摩擦角与素土相比差异不明显;在根径相同(1.25mm)的情况下2种植物根~土复合体的粘聚力均大于素土,其粘聚力增加率的变化范围在31.6%~46.23%之间,大小为柠条>沙地柏;2种植物随着根径的增加,复合体的抗剪强度均有不同程度的增大。

英文摘要：

Root-soil composite of two desert plants and the Pure soil were investigated by the fast-shear test using the direct shear apparatus,explored shear strength of root-soil composite and the impact of roots diameter and vertical pressure on the shear strength.The results showed that the shear strength of the root-soil composite of Caragana microphylla Lam.、 Sabina valgaris Ant.is higher than the Pure soil within the framework of shallow soil in 1.5m(25kPa),the Equivalent Friction Angle of the root-soil composi...