基于Ren模型的土石坝集中渗漏流热耦合研究  

Research on Thermal Coupling of Concentrated Seepage Flow in Earth-rock Dam Based on the Ren Model

作　　者：倪枫 任杰[1,2] 张文兵[3] 王帆 NI Feng;REN Je;ZHANG Wenbing;WANG Fan(State Key Laboratory of Eco hydraulics in Northwest Arid Region,Xi'an Univ.of Technology,Xi'an.710048,China;Dike Safety and Disease Prevention Engineering Technology Research Center of Ministry of Water Resources,Zhengzhou 450003,China;College of Water Conservancy&Hydropower Engineering,Hohai Univ.,Nanjing 210098,China)

机构地区：[1]西安理工大学省部共建西北旱区生态水利国家重点实验室,西安710048 [2]水利部堤防安全与病害防治工程技术研究中心,郑州450003 [3]河海大学水利水电学院,南京210098

出　　处：《三峡大学学报（自然科学版）》2022年第1期20-25,共6页Journal of China Three Gorges University：Natural Sciences

基　　金：水利部堤防安全与病害防治工程技术研究中心开放课题基金资助项目(DFZX202007)。

摘　　要：土石坝渗漏是常见的土石坝安全隐患问题,土壤导热系数是影响土石坝流-热耦合模型的关键参数,为了探究新的土壤导热系数在土石坝中的应用,采用导热系数Ren(2019)模型对二维心墙土石坝饱和-非饱和流-热耦合模型进行分析,以湖北省黄冈市大山背水库为例,并进行了不同集中渗漏条件下的数值模拟.结果表明Ren(2019)模型适用于土石坝流-热耦合模型的研究,能够准确地反映土石坝温度场和渗流场的耦合过程.集中渗漏通过渗流场影响温度场分布,不同高度的集中渗漏通道对坝体温度场的影响不同,通过埋设传感器监测坝体内部温度场可以实时地反映土石坝渗流场的情况,能够及时发现问题并排除隐患.The leakage problem of earth-rock dams is a common safety hazard problem of earth-rock dams. Soil thermal conductivity is a key parameter affecting the flow-thermal coupling model of earth-rock dams. In order to explore the application of new soil thermal conductivity in earth-rock dams, the Ren(2019) model of thermal conductivity was used to analyze the saturated-unsaturated flow-thermal coupling model of two-dimensional core-wall earth-rock dams. Taking Dashanbei Reservoir in Huanggang City, Hubei Province as an example, the numerical simulation under different concentrated leakage conditions was carried out. The results show that Ren(2019) model is suitable for the study of flow-heat coupling model of earth-rock dam, and can accurately reflect the coupling process of temperature field and seepage field of earth-rock dam. Concentrated seepage affects the distribution of temperature field through seepage field. Concentrated seepage channels with different heights have different effects on the temperature field of the dam. Monitoring the internal temperature field of the dam by embedding sensors can reflect the seepage field of the earth-rock dam in real time, and can find problems in time and eliminate hidden dangers.

关 键 词：导热系数 心墙裂缝 集中渗漏 土石坝流-热耦合模型 数值模拟 

分 类 号：TV139.14[水利工程—水力学及河流动力学]