摘要
堤坝渗漏通道中水流与周围土体的热量交换可引起一定范围内的温度变化,因此渗漏通道可看作一个有限长线热源。堤坝浸润线以下存在着稳定的渗流场,可对坝体的温度场产生影响,但其影响未知。为此,通过分析点热源在移动介质中的温度响应来建立有稳定渗流影响的堤坝渗漏热流耦合模型,并设计了相应的试验平台,进行了试验模拟,分析了坝体中渗流场对温度场的影响。然后由实测温度通过模型反推出渗漏流速,并与试验设定值进行比较,误差在合理范围内。
Heat exchange between water in dam leakage passage and surrounding soil can cause a certain range of temperature change in the earth mass,so the leakage passage can be seen as a limited-length line heat source.Under seepage line there is a steady seepage field,which can influence the temperature field in dam,but its impact is unknown. Therefore,a steady seepage-influenced heat transfer model has been proposed by analyzing the temperature response regarding point heat source in moving medium. To analyze the influence of seepage field on temperature field,an experimental device has been designed for simulation. By applying the model,leakage velocity can be obtained by using inverse analysis based on measured temperature,and comparing with the test value,results show that the error is accepted.
出处
《地下空间与工程学报》
CSCD
北大核心
2016年第S1期32-38,共7页
Chinese Journal of Underground Space and Engineering
基金
国家科技支撑计划(2012BAB03B01)
国家留学基金(201306715009)
关键词
堤坝
稳定渗流
渗漏
热流耦合
dam
stable seepage
leakage
heat-fluid coupling
