渗流作用下均质土坝温度场变化规律试验与数值模拟研究

Experimental and Numerical Simulation Study on the Change Law of Temperature Field of Homogeneous Earth Dams under the Action of Seepage

土质堤坝是保障中国经济和社会发展的重要基础设施,而渗透破坏是导致堤坝失事的主要原因。监测渗流尤为关键,渗流热监测技术无污染,价格低廉,测量精度高,近年来发展迅速。笔者采用物理模型试验与数值模拟的方法,对渗流作用条件下有无渗漏通道情况的堤坝温度场的变化规律进行了研究,证实了坝体渗漏对温度场分布的影响。通过试验实测数据验证堤坝渗流场与温度场耦合模型的准确性,为渗流热监测技术的进一步研发提供理论支撑。

Earth dams are an important material basis facilities for safeguarding our economic and social development,and infiltration damage is the main cause of dam failures.Therefore,monitoring seepage is especially critical.Seepage thermal monitoring technology is pollution-free,inexpensive,and highly accurate in measurement,and has been developing rapidly in recent years.In this study,physical model tests and numerical simulations are used to investigate the variation of the temperature field of a dam with and without seepage channels under seepage conditions,and the effect of dam leakage on the temperature field distribution is confirmed.At the same time,the accuracy of the coupled model of seepage field and temperature field of the earth dam is verified by the experimental measured data,which provides theoretical support for the further development of seepage thermal monitoring technology.