METHOD FOR DETERMINING THE AERODYNAMICAL PARAMETERS HAND R, SPECIFIC TO THE EXPLOITED MINING ARES

摘要

The invention relates to a method for determining aerodynamic parameters specific to the exploited mining area, representing the negative pressure exerted upon the exploited mining area and the resistance thereof, by using the circulated flow rate and the said negative pressure exerted upon the exploited mining area, respectively. According to the invention, the method consists in measuring directly or indirectly, at the level of an insulating construction, the air flow rate (), lost in the exploited mining space, by determining the losses of pressure () measured on the air flowing path from the point where the fresh air enters the stope to the intersection between the raise for the outlet of the return air and a cross end gallery, by means of the flow rate () at the level of the exploited mining area, and the losses of pressure (), measured on the air flowing path, respectively, which is equal to the negative pressure exerted upon the exploited mining area, while applying the generalized Atkinson law by means of which there is determined the resistance specific to the exploited mining area () in order to select and dimension in a correct manner the methods for preventing the spontaneous combustions in coal mines.