Study on the Coupled Heat and Moisture Transfer Characteristics and Impact Factors of Surrounding Rock Under Periodic Boundary
To study the coupled heat and moisture transfer characteristics of surrounding rock under periodic boundary condition,a mathematical model described the coupled heat and moisture transfer was developed with temperature and relative humidity as the driving potentials.By designing orthogonal experiments,the impact factors of the coupled heat and moisture transfer characteristics were explored,and a prediction formula for the annual average heat and moisture absorption and release and their duration was obtained.The results showed that the temperature and humidity of the surrounding rock show seasonal changes,and the amplitude of temperature and humidity inside the surrounding rock were delayed and attenuated.The surrounding rock control heat circle expanded month by month,and the thickness of the control heat circle expanded from 5m in January to 11m in December.The annual amplitude and annual average of air temperature had the greatest impact on the heat absorption and release of surrounding rock and the duration of heat absorption and release,respectively.The annual fluctuation amplitude of air humidity had the greatest impact on the moisture release of surrounding rock,and the annual average humidity had the greatest impact on the moisture absorption and release duration of surrounding rock.
coupled heat and moisture transferperiodic boundaryorthogonal experimentheat and moisture absorption and release
万方数据
维普
