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本文在总结各种岩土热物性确定方法的基础上,详细分析了基于解析法的地下岩土热物性现场测试方法的测试装置与过程、理论基础及其算法,包括基于线热源模型的数据拟合法及基于线热源与柱热源模型的参数估计法。通过实例计算对3种方法的计算精度进行了分析与比较,探讨了测试时间对计算结果的影响,所得结论对土壤源热泵应用设计中地下岩土热物性的实际测试具有指导意义。
On the basis of summarizing various geophysical properties determination methods, this paper analyzes in detail the testing equipment and process, theoretical basis and algorithm of analytical method based on geothermal field properties of underground geotechnical materials, including data simulations based on linear heat source model Legal and Parameter Estimation Method Based on Linear Heat Source and Column Heat Source Model. The calculation precision of the three methods is analyzed and compared by example calculation, and the influence of test time on the calculation results is discussed. The conclusions obtained are practical and practical for the practical testing of thermal properties of underground geotechnical in ground source heat pump design.