基于TRT的地下水渗流速度及岩土热导率的估算

王昌龙; 蒋天茁; 郭艳春; 周兴; 鲁进利; 孙彦红

doi:10.19912/j.0254-0096.tynxb.2024-1964

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太阳能学报 ›› 2026, Vol. 47 ›› Issue (3) : 496-504. DOI: 10.19912/j.0254-0096.tynxb.2024-1964

基于TRT的地下水渗流速度及岩土热导率的估算

王昌龙^1,2, 蒋天茁^1,2, 郭艳春², 周兴^1,2, 鲁进利¹, 孙彦红¹

作者信息 +

ESTIMATION OF GROUNDWATER SEEPAGE VELOCITY AND GROUND THERMAL CONDUCTIVITY BASED ON THERMAL RESPONSE TEST

Wang Changlong^1,2, Jiang Tianzhuo^1,2, Guo Yanchun², Zhou Xing^1,2, Lu Jinli¹, Sun Yanhong¹

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文章历史 +

摘要

基于考虑地下水渗流影响的复合G函数,建立浅层套管式地埋管（SCGHE）传热模型,并结合忽略地下水渗流的SCGHE传热模型,提出通过匹配热响应测试（TRT）数据估算地下水渗流速度（u）和岩土热导率（λg）的估算方法。采用三维数值模型模拟不同条件下的TRT实验,进而验证所建立的传热模型和估算方法的有效性。结果表明：在较长时间后,所建立的传热模型的精度较高,且其精度基本高于基于移动无限线热源理论的传热模型;所提出的估算方法具有可行性,其中,λg的估算误差基本小于1%,u的估算误差基本小于8%,但当u较小时,u的估算误差较大。

Abstract

A heat transfer model is established for shallow coaxial ground heat exchanger （SCGHE） based on a composite G-function considering groundwater seepage, and then based on the proposed model and a model ignoring groundwater seepage, an estimation method is proposed to estimate groundwater seepage velocity （u） and ground thermal conductivity （λg） by matching thermal response test （TRT） data. The TRT is simulated under different conditions by a three-dimensional numerical model, which is used to validate the proposed model and method. After a long time, the established model is precise, which basically has higher precision than that of the model based on moving line source theory. The proposed estimation method is feasible： for the studied cases, the errors of estimated λg are basically within 1%, and the errors of estimated u are basically within 8%, but the errors of estimated u are larger for smaller u.

导出引用

王昌龙, 蒋天茁, 郭艳春, 周兴, 鲁进利, 孙彦红. 基于TRT的地下水渗流速度及岩土热导率的估算[J]. 太阳能学报. 2026, 47(3): 496-504 https://doi.org/10.19912/j.0254-0096.tynxb.2024-1964

Wang Changlong, Jiang Tianzhuo, Guo Yanchun, Zhou Xing, Lu Jinli, Sun Yanhong. ESTIMATION OF GROUNDWATER SEEPAGE VELOCITY AND GROUND THERMAL CONDUCTIVITY BASED ON THERMAL RESPONSE TEST[J]. Acta Energiae Solaris Sinica. 2026, 47(3): 496-504 https://doi.org/10.19912/j.0254-0096.tynxb.2024-1964

中图分类号： TK521

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