| 摘要 |
The invention relates to a method for identifying critical ventilation constructions at the level of a complex ventilation network, by establishing the instability degree induced at the level of active fans. The method, as claimed by the invention, consists in solving the complex ventilation network and setting the operating parameters related to active fans under normal working conditions and establishing the influence areas specific to each main ventilation station, after this stage the type and position of ventilation constructions are established, the influence of ventilation constructions upon the operating stability of active fans is determined, after which the constructions which do not produce effects upon the operation mode of active fans are identified at the level of the complex ventilation network, the ventilation constructions which produce effects upon the mode of operation of active fans are identified at the level of complex ventilation network, and then, by successive attempts, those ventilation constructions which induce major effects upon the mode of operation of active fans are identified out of the ventilation constructions producing effects upon the mode of operation of active fans, and finally, the ventilation constructions determining the instability of the complex ventilation network are identified within the latter category, so that these identified ventilation constructions are considered critical, the method for identifying the critical ventilation constructions at the level of a complex ventilation network being suitable for any underground exploitation of useful mineral substances and being applied for improving the management of ventilation networks and also for increasing the work-safety and -health in the underground exploitation of useful mineral substances. |
