基于两种热源理论的岩土体热响应试验对比

Rock and Soil Masses Thermal Response Test Comparison Based on Two Heat Source Theories

为了准确获得地下岩土体热物性参数,基于两种热源模型理论,详细分析了岩土体热物性现场热响应测试的模型理论及数据处理方法。以丹阳市滨江新城三口100 m深单U型垂直埋管试验孔恒热流散热试验为例,采集现场测试数据得到埋管供回水温度响应曲线,采用两种方法对试验数据进行分析处理。通过与实测温度值进行对比,发现相对于圆柱面热源,线热源理论的拟合情况更优,所计算出的各个参数更接近实际。线热源理论可广泛应用于岩土体热物性测试数据的处理分析。

To obtain underground rock and soil masses thermal physical property parameters exactly, based on two heat source theories,analyzed rock and soil masses physical property site thermal response test model theory and data processing method in detail. Taking the constant heat flux heat dissipation test in three 100 m deep single U typed vertical pipe laying testing boreholes in the riverside new district, Danyang City as example, collected site tested data and worked out pipe laying water supply and return temperature curves,through two methods carried out analytic processing for tested data. Through comparison with measured temperatures has found that relative to the cylindrical surface heat source, the fitting condition of line heat source is even better, various parameters computed more closed to actual. The line heat source theory can be widely used in rock and soil masses thermal property tested data processing and analysis.