摘要
为了揭示中峰型降雨入渗对地基基质吸力时空分布的影响,从瞬态非饱和渗流控制方程出发,引入Gardner水力特征函数,构建了降雨条件下地基水分迁移模型.利用Fourier积分变换法求解模型,获得了中峰型降雨入渗过程地基瞬态基质吸力解析解.该解析解建立了地基基质吸力与降雨特征参数之间的映射关系,通过其得到了中峰型降雨条件下地基任意位置的基质吸力演化规律.
In order to reveal the influence of medium-peak rainfall infiltration on the spatial-temporal distribution of matrix suction,the Gardner soil-water characteristic function is introduced to simplify the Richards transient unsaturated seepage equation and to establish a water transport model for a homogeneous foundation under medium-peak rainfall infiltration.Fourier integral transform is used to obtain a analytical solution of the transient matric suction during rainwater infiltration under medium-peak rainfall.The analytical solution establishes the mapping relationship between the matric suction of unsaturated foundation and the rainfall characteristic parameters,which provides a theoretical method for quickly and accurately obtaining the matrix suction and its evolution law at any position of the foundation during the infiltration process of central-peaked pattern.
作者
熊轩宇
秦卫星
徐瑞麟
胡惠仁
陈检
吴亦晗
XIONG Xuanyu;QIN Weixing;XU Ruilin;HU Huiren;CHEN Jian;WU Yihan(School of Hydraulic and Environmental Engineering,Changsha University of Science&Technology,Changsha 410114,China;Key Laboratory of Water-Sediment Sciences and Water Disaster Prevention of Hunan Province,Changsha 410114,China;College of Civil Engineering and Architecture,Zhejiang University,Hangzhou 310056,China;School of Traffic&Transportation Engineering,Changsha University of Science&Technology,Changsha 410114,China;International College of Engineering,Changsha University of Science&Technology,Changsha 410114,China)
出处
《吉首大学学报(自然科学版)》
2025年第2期39-44,共6页
Journal of Jishou University(Natural Sciences Edition)
基金
国家自然科学基金资助项目(51208062,51508039)
湖南省自然科学基金资助项目(2022JJ30601)。
关键词
非饱和土
均质地基
瞬态基质吸力
降雨入渗
解析解
unsaturated soil
homogeneous foundation
transient matrix suction
rainfall infiltration
analytical solution
