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下花园煤矿,采用设置辅扇的方法克服了矿井严重漏风的现象,满足了矿井安全生产的要求。 下花园煤矿一井的通风方式为中央并列式,其进、出风斜井间距15米。由于主要井巷布置在煤层里,部分又穿过了采空区,所以地压过大,失修严重,使井巷断面变小,风阻增大,漏风极为严重。仅在1400米的巷道中,负压消耗就占全矿井总负压的46％,漏风占矿井总入风量的22％,使矿井通风十分困难。他们曾采取提高主扇能力的办法,以图增加风量。但结果是漏风量继续上升,而工作面有效风
Under the garden coal mines, the method of setting auxiliary fans is adopted to overcome the serious air leakage phenomenon in the mine and meet the requirements of mine safety production. Under a garden coal mine ventilation method for the central parallel type, its into and out of wind inclined spacing of 15 meters. As the main well is arranged in the coal seam and partly passes through the goaf, the overburden pressure is too large and the disrepair is serious. As a result, the cross section of the well lane becomes smaller and the wind resistance increases and the air leakage is extremely serious. In only 1,400 meters of roadway, the negative pressure loss accounts for 46% of the total negative pressure of the whole mine, and the air leakage accounts for 22% of the total air volume of the mine, making the mine ventilation difficult. They have taken the approach of raising the capacity of the main fan in an attempt to increase the air volume. However, the result is that the amount of air leakage continues to rise while the working face is effectively windy