堤坝渗漏及结构破坏条件下渗流传热特性的数值分析  

Numerical analysis of seepage and heat transfer characteristics under dam leakage and structure failure conditions

作　　者：蒋中明[1,2] 杨江寅 黄湘宜 廖峻慧 肖喆臻 JIANG Zhongming;YANG Jiangyin;HUANG Xiangyi;LIAO Junhui;XIAO Zhezhen(School of Hydraulic and Environmenal Engineering,Changsha University of Science&Technology,Changsha 410114,China;Key Laboratory of Dongting Lake Aquatic Eco-Environmental Control and Restoration of Hunan Province,Changsha University of Science&Technology,Changsha 410114,China)

机构地区：[1]长沙理工大学水利与环境工程学院,湖南长沙410114 [2]长沙理工大学洞庭湖水环境治理与生态修复湖南省重点实验室,湖南长沙410114

出　　处：《水利水电科技进展》2023年第6期66-73,共8页Advances in Science and Technology of Water Resources

基　　金：湖南省水利科技项目(XSKJ2021000-9,XSKJ2021000-1)。

摘　　要：以洞庭湖区典型土质堤防为对象,采用FLAC3D软件开展了渗流-温度-应力耦合计算,分析了堤身及堤基在渗漏及结构破坏条件下的渗流场、温度场和损伤场的时空演变特性,探明了温度与渗流、温度与结构破坏之间的内在联系。结果表明,堤坝发生局部渗透破坏乃至整体结构破坏过程中,下游堤脚及地表温度的演变呈阶段性变化特征;地表温度的变化特征可作为预测或判断堤坝内部渗透破坏及结构损伤程度的间接指标。Taking typical soil dikes in the Dongting Lake area as the object,the coupling calculation of seepage,temperature and stress was carried out by using FLAC 3D software.The temporal-spatial evolution characteristics of the seepage field,temperature field and damage field of dikes and foundations were analyzed under the conditions of seepage and structural failure.The internal relationships between temperature and seepage and between temperature and structural failure were investigated.The results show that the evolution of dike foot and surface temperature in the lower reaches reveals the characteristics of stage change during the process of local penetration failure and even the whole structure failure.The change characteristics of surface temperature can be used as an indirect index to predict or judge the degree of seepage damage and structural damage in dams.

关 键 词：渗流传热特性 堤坝渗漏 渗透破坏 结构破坏 FLAC3D 

分 类 号：TV222.2[水利工程—水工结构工程]