【作者】 范秋雁； 黄海龙； 王明晓；

【Author】 FAN Qiu-yan~1 HUANG Hai-long~2 WANG Ming-xiao~3 (1.College of Resources and Environment,Gnangxi Univ.,Nanning 530004,China; 2.Guangxi Hydrological Geology and Eng.Geology Investigation Institue,Liughou 545006,China; 3.College of Resources and Environment,Guangxi Univ.,Nanning 530004,China)

【机构】 广西大学资源与环境学院； 广西水文地质工程地质勘察院；

【摘要】 利用 ANSYS 有限元软件进行降雨入渗条件下的膨胀性泥岩边坡开挖模拟,并结合了工程实例研究泥岩边坡在不同降雨强度、持时的工况下边坡岩体位移、应力的变化,从而分析膨胀性泥岩边坡在考虑降雨入渗条件下的稳定性。获得的结论是：随着降雨强度、时间的增加,边坡的应力不断地增大,剪应力最大值出现在坡脚,其总趋势是由内向外增多,愈近坡角愈高,向坡内逐渐恢复到原始应力状态。说明坡脚在降雨过程中最容易达到破坏状态, 且随着降雨强度、时间的增加,沿坡面的剪应力也不断的增大,坡面发生破坏的可能性也越来越大。更多还原

【Abstract】 The paper uses the ANSYS finite element software to simulate the expansive mudstone slope excavating under the condition of rainfall infiltration,and combined a project example to research displacement and stress change of expansive mudstone slope under the different intensity and time of rainfall.The results show as follows: With the increase of rainfall intensity and time,the slope stress is unceasingly increasing.The maximum value of shear stress appears in the foot of slope,with the general trend of increasing outwards.The nearer to the foot of slope,the higher the value is.It restores gradually to the primitive stress condition towards the inner part of the slope.The study shows that the foot of slope in the process of rain is easiest to be destroyed,and that with the in- crease of rainfall intensity and time,the shear stress is also increasing and that the face of the slope is more easily to be destroyed.更多还原