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What is a ventilation system and how is it classified?
When the mine is ventilated, the wind flow flow line is generally: the fresh air flow is sent into the underground by the air inlet well, and the mining works such as the roadway and the patio are drilled through the stone gate, the stage transportation and the roadway, etc., to the working face that needs ventilation, and the dirty after the working face is flushed. The wind flows through the return air shaft to the surface. Ventilation lines and facilities (including ventilation) through which the wind flows are called ventilation systems. According to the number of independent ventilation systems owned by the mine, it can be divided into centralized ventilation and district ventilation; according to the relative positions of the intake and out (return) wind shafts, the ventilation system is divided into a central type and a diagonal type.