Natural Ventilation in Deep-Underground Spaces

In this study, we conducted experiments to reveal the mechanism of natural ventilation in deep-underground spaces. Through the combination of various basic units, we constructed a natural ventilation loop L, and the results proved the feasibility and reliability of natural ventilation in deep-underground spaces. Moreover, we proposed a fire evacuation route in a reverse ventilation airflow direction. By combining basic unit groups to share the air shaft, the natural ventilation provided a reliable channel for fire evacuation.