Balance and Optimization Application of Network Air Volume in Mine Ventilation System
The unbalanced air volume of each air branch in the mine ventilation system will make the wind flow in some areas low,resulting in gas or toxic and harmful gas accumulation,and the problem of deep ventilation in the mine.Therefore,by increasing the openness of the ventilation system,increasing the number of main fans and optimizing the position of the intake and outlet of the ventilation system,the air volume of each air branch in the network can be effectively balanced while maintaining the air volume balance.The simulation test is carried out for the mine with the increase of the number of main fans and the optimization of inlet and outlet positions.The results show that the stability evaluation results indicate that the matrix is satisfactory,the ventilation volume is effectively improved,and the ventilation resistance of the working face is reduced from the original 2.511 kPa to 1.940 kPa,meeting the requirement of the wind resistance being less than 2 kPa.
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