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首页> 外文期刊>Ecological engineering: The Journal of Ecotechnology >Triaxial compression test of soil-root composites to evaluate influence of roots on soil shear strength
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Triaxial compression test of soil-root composites to evaluate influence of roots on soil shear strength

机译：土根复合材料的三轴压缩试验，评估根对土壤抗剪强度的影响

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In order to evaluate influences of roots on soil shear strength, a triaxial compression test was carried out to study the shear strength of plain soil samples and composites comprised of roots of Robinia pseucdoacacia and soil from the Loess Plateau in Northwest China. Roots were distributed in soil in three forms: vertical, horizontal, and vertical-horizontal (cross). All samples were tested under two different soil water contents. Test results showed that roots have more impacts on the soil cohesion than the friction angle. The presence of roots in soil substantially increased the soil shear strength. Among three root distribution forms, the reinforcing effect of vertical-horizontal (cross) root distribution was the most effective. Increase in soil water content directly induced a decline in soil cohesion of all test samples and resulted in a decrease in shear strength for both plain soil samples and soil-root composites. It was concluded that the triaxial compression test can be effectively used to study influences of roots on soil shear strength.
机译：为了评估根系对土壤抗剪强度的影响，进行了三轴压缩试验，研究了平原土壤样品以及由刺槐根和西北黄土高原土壤组成的复合材料的抗剪强度。根以三种形式分布在土壤中：垂直，水平和垂直-水平（交叉）。所有样品均在两种不同的土壤水分含量下进行测试。试验结果表明，根部对土壤内聚力的影响大于摩擦角。土壤中根的存在显着提高了土壤的抗剪强度。在三种根系分布形式中，垂直-水平（交叉）根系分布的增强作用最为有效。土壤含水量的增加直接导致所有测试样品的土壤内聚力下降，并导致平原土壤样品和土壤根复合材料的剪切强度下降。结论是，三轴压缩试验可以有效地研究根系对土壤抗剪强度的影响。

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