降雨条件下裂隙各向异性对坡积土边坡渗流的影响分析

发布时间：2019-04-11 19:40

【摘要】：基于饱和-非饱和渗流理论,运用Geo-studio软件中的Seep/w模块研究了裂隙各向异性与不同降雨强度共同作用下边坡的入渗规律。结果表明,当降雨强度小于裂隙渗透系数时,雨水入渗受降雨强度控制;当降雨强度大于裂隙渗透系数时,雨水入渗受裂隙渗透系数控制;在相同的降雨时间与降雨强度条件下,裂隙越短则裂隙内的体积含水率越高,裂隙角度越小对边坡内部体积含水率影响越大;增大降雨强度或增加降雨时间,均会削弱裂隙各向异性对边坡渗流的影响。
[Abstract]:Based on saturated-unsaturated seepage theory, the infiltration law of slope under the joint action of fracture anisotropy and different rainfall intensity is studied by using the Seep/w module of Geo-studio software. The results show that Rain Water infiltration is controlled by rainfall intensity when rainfall intensity is less than fracture permeability coefficient, and Rain Water infiltration is controlled by fracture permeability coefficient when rainfall intensity is greater than fracture permeability coefficient. Under the condition of the same rainfall time and rainfall intensity, the shorter the crack is, the higher the volume water content in the fracture is, and the smaller the fracture angle is, the greater the influence on the internal volume water content of the slope is. Increasing rainfall intensity or increasing rainfall time will weaken the influence of fracture anisotropy on slope seepage.
【作者单位】：长沙理工大学交通运输工程学院;长沙理工大学土木与建筑工程学院;
【基金】：国家自然科学基金(51508042,51678073,51508040) 湖南省教育厅科学研究一般项目(16C0053) 浙江省交通运输厅科技项目(2014H22) 湖南省重点研发计划项目(2016SK2023)
【分类号】：U416.14

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