New classification of mine ventilation resistance

Mine ventilation is the main measure to ensure industrial safety. Currently, there exist issues with the methodological basis for ventilation design. Additional research is required to determine and account for the aerodynamic resistance in mine workings in order to develop documents for ventilation calculations. An updated classification of aerodynamic resistance is proposed taking into account the technical capacity of devices used to monitor the mine air parameters. The paper revises information on frontal resistances in mines. In particular, it is proposed to categorize as the frontal resistance only those resistances that arise due to the movement of objects, e.g. mobile mining equipment. Obstacles such as the mine posts, stationary mining equipment, various materials placed in the mine workings with the length not exceeding 19 m will be referred to as the local resistances. The proposed classification is based on the existing scientific opinion on the presence of the three types of aerodynamic resistance, which is well-established in Russia. Elaboration of this classification is made only in terms of what should be referred to each of the three types of the resistance.