花岗岩残积土路基边坡水毁模拟分析

摘要

依托广佛肇高速公路工程，针对花岗岩残积土路堤边坡水毁工程进行了现场勘测、室内颗粒分析试验、直剪试验、渗透试验、土水特征曲线试验及数值模拟等，获得花岗岩残积土的物理性质和力学特性。依据土水特征曲线试验，得到脱湿和增湿曲线。通过数值模型，分析了路堤边坡水毁产生的原因。该研究成果可为施工期路堤边坡水毁的防治提供理论基础和科学依据。%Focused on Guangfozhao expressway proj ect engineering about the granite re-sidual soil embankment slope failure engineering problems,a series of studied like site investigation,indoor particle analysis test,direct shear test,permeability test,SWCC test,numerical simulation were carried out,and the physical and mechanical properties of granite residual soils were obtained.Based on the obtained curves of humidification and dehumidification from experimental results of SWCC,and the numerical model re-sults the reasons of the embankment slope damaged by flood was explained.The re-search results could provide the theoretical foundation and scientific basis for how to prevent and control the problem of embankment slope damaged by flood during the con-struction.