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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。
In order to obtain the thermal physical parameters of underground rock and soil accurately, the model theory and data processing method of on-site thermal response test of geothermal soil are analyzed in detail based on two heat source model theories. Taking the 100 m deep single U-shaped vertical buried pipe test of Danyang City Binjiang New City as an example, the field test data was collected to get the temperature response curve of the pipe for water supply and return. Two methods were used to analyze and process the test data. By comparing with the measured temperature, it is found that the fitting theory of linear heat source is better than that of cylindrical heat source, and the calculated parameters are more realistic. The theory of linear heat source can be widely used in the processing and analysis of thermal physical property data of rock and soil.