Abstract: An overall design of 3D visualized simulation system of mine ventilation is proposed, which is composed of the modules of 3D automatic construction of the ventilation system, 3D visualization of the ventilation system, dynamic airflow simulation and 3D interactive inquiry of the attributes of the ventilation map.The module of ventilation system construction is to provide the data to the system; the 3D visualization module is for the 3D visualization operation of the system; the dynamic airflow simulation module is based on the modified particle system algorithm and can display the ventilation parameters such as airflow direction, airflow type and airflow amount; and the 3D interactive inquire module is used for the space inquiry and analysis of the ventilation system.The detailed study and implementation are made on the above four modules, and the practical application of them with the ventilation data of a mine in Kailuan mine area has verified the feasibility and practicability of the system.

Key words: Mine ventilation, 3D visualized simulation system, Improved particle system algorethim, 3D interactive inquiry