陕南地区无黏性土边坡稳定数值模拟

摘要

为直观的分析滑坡的细观机理，对陕南地区无黏性土边坡进行了离散元模拟[1]，并利用颗粒流模拟方法，对土体应力应变关系和剪切带形成机理进行了微观数值模拟，将土体微观结构与对应的宏观力学特性结合起来，分析了土体剪切带的形成与发展过程，得出了一些有价值的结论。%In order to analyzes the meso-mechanism of landslides, the paper has the distinct element simulation of the non-cohesive soil in South-ern Shaanxi areas, adopts the grain flow method to simulation method to have the micro-numeric simulation of the soil stress and strain relation-ship and mechanism of the shear zones by combining the soil microstructures with the respective macro-dynamic features, analyzes the formation and development of the soil shear zones, and achieves valuable conclusion.