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利用HY—1型非稳态环形热源岩石热导仪测定了非饱和高压实膨润土的导热特性,探讨了高压实膨润土总体导热系数与固相、液相、气相导热系数之间的关系。文中根据国际上对同类问题的研究实际,拟合了适用于描述高压实膨润土总体导热系数与三相导热系数之间关系的经验公式,该公式的导出对高压实膨润土导热性能的理解及温度场模拟工作均具重要意义。
The thermal conductivity of unsaturated high-pressure bentonite was measured using HY-1 non-steady-state annular heat source rock thermal conductivity meter. The relationship between the overall thermal conductivity of high-pressure bentonite and the thermal conductivity of solid, liquid, and gas phases was investigated. Based on the research practice of similar problems in the world, an empirical formula that can be used to describe the relationship between the overall thermal conductivity and three-phase thermal conductivity of high-pressure bentonite is fitted. The derivation of this formula gives an understanding of the thermal conductivity of high-pressure bentonite. Temperature field simulation work is of great significance.