矿井扇风机所耗电能占全矿之首。井筒为矿井通风的总进、出口,进风和出风井筒的通风负压损失耗电可达全矿通风的1/3—1/4。立井开拓的井筒大而短,可大量通风节电,现为矿井主要开拓方式,但仍耗电较多。如一个300万吨矿井采用2500kw功率的扇风机,每年耗电达2,190万度,而进、出风立井筒的通风负压损失耗电即占600—800 Mine fan power consumption of electricity accounted for the first of the mine. Mine shaft for the ventilation of the total import, export, import and export of ventilation shaft negative pressure loss of ventilation up to 1 / 3-1 / 4 of the mine ventilation. Shaft wells to open up large and short shaft, a large number of ventilation and energy saving, is the main way to open up the mine, but still more power consumption. If a 3 million tons of mines with 2500kw power fan, the annual power consumption of 21,900,000 degrees, and into the vertical shaft ventilation negative pressure loss of power consumption accounts for 600-800