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一、扇风机安装前的通风情况下戏台坑是一个自然通风的坑口,几年来随着生产的发展、鑛井的加深、作业人数及火药消耗也随之增加。在西区两个鑛井的高差仅有170公尺,自然风力的速度不大,计算结果均为3公厘水银柱,虽然在独头巷道和天井掘进时都正确地使用了局部扇风机,但因通风系统中的主要巷道风速每秒在0.5公尺以下,使爆破后产生的有毒气体不能在一定时间内排到大气中或冲淡到无害於人体健康的允许标准浓度,尤其在春秋二季换风期间坑内外的气流平衡时,炮烟薰人事故不断发生,由1月到6月止,下戏台坑就发生八次炮烟薰人事敌。主要的解决办法要靠安装主力扇风机,需要国家投
First, fan ventilation before installation Stage pit is a natural ventilation Hang Hau, the past few years with the development of production, deepen the mine, the number of workers and the consumption of gunpowder also will increase. The elevation difference between the two mines in the Western District was only 170 meters, and the natural wind speed was not so great. The calculation results were all 3-cm mercury pillars. Although partial fans were properly used in tunneling and paving, However, due to the ventilation system of the main roadway at a speed of 0.5 meters per second below, the toxic gases generated after blasting can not be discharged to the atmosphere within a certain period of time or diluted to harmless to human health standards allowable concentration, especially in the spring and autumn season During the ventilation period, the air flow inside and outside the wellbalanced, the smoky smoky accident continued to occur, from January to June, the next stage kickhole took place eight times. The main solution depends on the installation of the main fan, the need for national investment