各向异性基岩的热学性能参数的野外现场测定探讨

Study on the Field Determination of Thermal Parameters of Rock Mass

本文针对基岩的热学性能具有各向异性的特点，根据热传导的基本原理和热胀冷缩的规律，进行野外现场试验，实测温度场及变形量。运用“反演”方法分别推求其导热系数λ和线胀系数ａ．并编制程序来进行数据处理。结果表明，通过此方法可测定各向异性岩体的λ和ａ．方法精度较高，而且方便实用。可用于探讨现场岩体的热学性能参数的变化规律，及为实际工程提供较为可靠而合理的资料。

In this paper,according to the heterogeneous the rmal characteristics of the foundation rock mass,based on the theory of heat conduction and the principle of theimal expansion and shrinkage,the fieldtestings are conducted to measure the temperature and the deformation of the rock mass. Thus the ther-mal conductivity and the linear expansion coefficient are calculated inversely,and a computational pro-gram is made to deal with the data,The results show that the method is of high precisim and is muchconvenient, and can provide the reliable and more reasonable data