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该鑛在主扇通风设计中,总囘风道的密闭工作,做得很好,值得其它厂鑛研究学习。囘风道密闭工作是先用决石堆集严密,而后,在巷道周壁用少量洋灰混以黄泥塗抹。虽然总囘风道距离旧窿很近,但漏风量很少,而且巷道光滑。所以原设计的70仟瓦的主扇,现在因故,不能使用原马达,而改用30马力的马达,在低转数下运转。但在深处200公尺以下的十中段仍然有风流,以30马力运转,主扇有效
The mine ventilation design in the main fan, the total return air duct closed work well done, it is worth studying other factories and mines. Back to the air duct airtight work is first stacked with stone, and then, in the roadway wall with a small amount of foreign mixed with yellow mud smear. Although the total return air duct is very close to the old hole, the amount of air leakage is small and the roadway is smooth. So the original design of 70 kilowatts of the main fan, now for some reason, can not use the original motor, and switch to 30 horsepower motor, running at low rpm. But in the depths of 200 meters below the middle ten are still Merry, with 30 horsepower operation, the main fan effective