水利学报2026，Vol.57Issue(2)：245-254,10.DOI:10.3724/j.slxb.20240645
基于人工温度场的土体渗流速度监测理论模型与试验验证
Theoretical model and its experimental validation of soil seepage velocity monitoring based on artificial thermal field
喻葭临 1宫浩 2程正飞 1吴永康 3周剑夫 4于玉贞5
作者信息
- 1. 中国水利水电建设工程咨询有限公司,北京 100120||水电水利规划设计总院,北京 100120
- 2. 北京交通大学 土木建筑工程学院,北京 100044
- 3. 北京交通大学 土木建筑工程学院,北京 100044||清华四川能源互联网研究院,四川 成都 610213
- 4. 三峡大学 水利与环境学院,湖北 宜昌 443002
- 5. 清华大学 水利水电工程系,北京 100084
- 折叠
摘要
Abstract
In earth-rock dam engineering,the feasibility of using temperature for seepage safety monitoring has been verified.However,quantitatively assessing the flow velocity in soil based on the temperature field remains an unre-solved issue.In this regard,this paper constructs an artificial thermal field seepage analysis model that considers the thermal-seepage flow coupling effect,using the finite element method to study the cooling patterns of monitoring wells under different seepage velocities,and validates the findings through laboratory experiments.The results indi-cate that:(1)When the seepage velocity is lower than 1×10-4 cm/s,the heat transfer process is primarily governed by heat conduction,with the influence of heat convection being negligible;further reducing the seepage velocity has little effect on the heat transfer process.(2)The selection of the initial temperature does not affect the cooling pat-tern,which is solely related to the seepage velocity in the surrounding soil.Therefore,when applying the artificial temperature field technique for flow velocity analysis in practical engineering,it is unnecessary to strictly control the initial temperature.(3)There is a monotonic relationship between the cooling constant λ and the seepage velocity v,and the proposed exponential decay function fits well with the water temperature decline process inside the monitoring well,enabling accurate prediction of the seepage state in soil based on the cooling curve of the artificial temperature field.In summary,this study validates the feasibility of determining flow velocity in soil using an artificial thermal field and provides theoretical support for flow velocity measurement.关键词
人工温度场/渗流监测/热-流耦合/数值模拟/降温过程/渗流速度Key words
artificial thermal field/seepage monitoring/thermal-flow coupling/numerical simulation/cooling pro-cess/seepage velocity分类
建筑与水利引用本文复制引用
喻葭临,宫浩,程正飞,吴永康,周剑夫,于玉贞..基于人工温度场的土体渗流速度监测理论模型与试验验证[J].水利学报,2026,57(2):245-254,10.
