赵杰

• 1:开封市通达公路工程有限公司

摘要(Abstract)：

我国西南地区降雨量充沛,降雨对人工土质高边坡的稳定性有很大的影响。为了揭示降雨对土质边坡稳定性的影响规律,通过Geo-studio软件模拟降雨入渗过程,对不同降雨型、不同土质及各向异性的土质边坡稳定性进行了分析。计算模型采用的降雨模式分别为前峰型、中峰型和后峰型,边坡土质分别选用砂质土、粉土和黏土,土质边坡的渗流各向异性参数之比(kx/kz)分别定为5、10和20,基于概率分析法对非饱和土质边坡的稳定性进行了分析。结果表明,前锋型降雨下的边坡稳定性随降雨时间的增加其降幅较快,其次是中峰型降雨和后峰型降雨,即降雨模式是边坡稳定性下降的控制性因素;各向异性参数比是影响降雨入渗能力的主导因素,也是影响边坡稳定性的重要因素,各向异性参数比越大,其稳定性指标骤降过程所持续的时间则越长;随着土体渗透性质的降低,其稳定性受降雨的影响程度逐渐降低。

关键词(KeyWords)： 非饱和土;边坡;降雨;各向异性;稳定性

Abstract:

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基金项目(Foundation):

作者(Author): 赵杰

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