摘要
针对近水平红层公路边坡因降雨渗流作用导致边坡内部失去平衡而发生变形破坏的情况,以实际工程为依托,通过现场调查及室内抗剪试验,并结合Seep/W模块建立此类边坡等效介质连续模型;基于饱和-非饱和渗流理论及等效渗透系数法,探寻红层边坡在不同降雨强度及降雨持时下的孔隙水压力变化、地下水浸润线的动态变化以及暂态饱和区的演化规律,分析边坡在降雨作用下坡体内部渗流场变化特征及瞬态稳定性。
Aiming at the situation that the near-horizontal red layer highway slope is out of balance and damaged due to rainfall seepage and deformation,the continuous model of slope equivalent medium of this kind of slope is established through field investigation and indoor shear test and combined with the Seep/W module for an actual project.Based on saturated-unsaturated seepage theory and equivalent permeability coefficient method,the pore water pressure changes,the dynamic groundwater infiltration line changes and the transient saturation area evolution law of red bed slope under different rainfall intensity and duration are explored,and the characteristics and transient stability of seepage field inside the slope body under the action of rainfall are analyzed.
作者
廖军
龚洪苇
石磊
钱小龙
冯文凯
LIAO Jun;GONG Hongwei;SHI Lei;QIAN Xiaolong;FENG Wenkai(School of Environmental and Civil Engineering,Chengdu University of Technology,Chengdu 610059,Sichuan,China;State Key Laboratory of Geohazard Prevention and Geoenvironment Protection,Chengdu University of Technology,Chengdu 610059,Sichuan,China)
出处
《水力发电》
北大核心
2020年第10期47-51,62,共6页
Water Power
基金
四川省青年科技创新研究团队专项计划项目(2017TD0018)
国家自然科学基金资助项目(41572291)
地质灾害防治与地质环境保护国家重点实验室团队项目(SKLGP2016Z001)。
关键词
近水平红层
高边坡稳定性
降雨强度
降雨持时
渗流场
near-horizontal red bed
high slope stability
rainfall intensity
rainfall duration
seepage field
