Abstract: In order to study different influences caused by uniform wet surface and partly wet surface on temperature of surrounding rocks and roadway walls and to accurately predict airflow temperature and humidity in wet roadway, a numerical calculation model for heat conduction of surrounding rocks and airflow temperature and humidity was constructed based on theory of three dimensional temperature field. Then, uniform wet surface model (UWSM) and PWSM were simulated, and influences of parameters on airflow temperature and humidity were discussed under different simulation conditions. The results show that rock and airflow temperature distribution calculated by three dimensional heat conduction model under partly wet condition are more reasonable. The proposed method of determining correction factors of wetness based on wet area-ratio can improve prediction accuracy of temperature and humidity in large-scale ventilation networks.

Key words: wet roadway, airflow temperature and humidity, partly wet surface model (PWSM), numerical simulation, wet area-ratio