浅层岩土体原位热响应测试

In-situ Thermal Response Test of Shallow Soil and Rock

介绍了岩土体原位热响应测试仪的结构及测试原理,建立了基于线热源模型的热物性参数计算模型。结合工程实例,进行了岩土体初始平均温度测试、地埋管热响应测试。拟合流体平均温度与时间对数的关系曲线,求得了岩土体的热导率、钻孔热阻。

The structure and measurement principle of in-situ thermal response tester of shallow soil and rock are introduced. The model for calculation of thermophysical parameters based on the line heat source model is established. The initial＇ average temperature test of soil and rock as well as the thermal response test of buried pipe are performed with an engineering example. The thermal conductivity of soil and rock and the thermal resistance of boreholes are obtained by fitting the relation curve between average fluid temperature and time logarithm.