不同埋深地下洞室壁面传湿计算

Calculation on Moisture Transfer for Underground Cavern Walls with Different Depths

基于热力学质传递理论,考虑湿度和压力梯度变化(暂不计入温度影响),通过分析地下洞室壁面多孔介质的质传递过程,获得了洞室壁体和洞室的湿空气分压力的对应关系,提出地下洞室质传递和洞室埋深的关系方程,分析传质系数随洞室埋深变化的规律。该研究方法可为深入分析地下洞室壁面传质问题,改善地下建筑湿环境提供参考。

Abstract： The mass transfer process of wall porous media in underground caverns is analyzed by employing thermodynamics and mass transfer theory and considering only the effect of humidity and pressure gradient （ not considering the temperature）. The corresponding relation between walls and moist air pressure of caverns is obtained. The equation of mass transfer and the depth is finally proposed. The analysis on the relationship of mass transfer coefficient with depth variation will provide references for further investigations on mass transfer problem of caverns and improvements of underground construction wet environment.