| 摘要 |
The present invention relates to a method to determine an air injection volume in a mine for smooth air ventilation in the mine. According to the present invention, the method to determine the air injection volume in the mine comprises: (a) a step of determining a required air ventilation volume (Q_i) required in a plurality of mines respectively, and inputting the required air ventilation volume to a system and computing a total air ventilation volume (Q_t) by calculating a sum of the required air ventilation volume per mine; (b) setting an air inflow volume (Q_a) flowing into each mine by a resistance value of a flow path and a cross sectional area of the flow path of the air comprising a plurality of inlet paths and a plurality of outlet paths when the total air ventilation volume is injected into the mine using a mine ventilation network analysis program installed in the system; (c) setting an air leakage volume (Q_L) leaking to the outlet path from the inlet path through stopping by calculating a pressure difference between the outlet path and the inlet path separated from each other by stopping; (d) a step of calculating an actual air arrival volume flowing into a blind end in a mine gallery by subtracting the air leakage volume from the air inflow volume, and judging whether a difference value between the required air ventilation volume per blind end in the mine gallery and the air arrival volume is within an allowable limit; and (e) a step of determining the total air ventilation volume when the difference value satisfies the allowable limit as the air injection volume to be injected to the mine, by performing the steps (b)-(d) repetitively by increasing the total air ventilation volume in case the difference value exceeds the allowable limit in step (d). |
