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针对奥家湾I号矿基建工作面多、巷道长、通风条件差的问题,提出利用变电硐室作接力风室,形成安全经济的二级供风系统,大大改善了通风条件。改造后各巷道最高CO浓度为23ppm、最高SO2浓度为5ppm、最高呼吸性粉尘浓度为5mg/m3、最低风速为0.16 m/s,各项指标均达到井巷施工作业环境标准,不仅保证了工人的安全健康,并且大大提高了基建速度,促进平巷月炮掘记录达到168 m,较合同工期提前半个月贯通,取得了较好的经济效益。
Aiming at the problem that there are many basic working face, long tunnel and poor ventilation condition in Aojiawan I Mine, it is proposed that the use of substation chamber as relay air chamber to form a safe and economical secondary air supply system and greatly improve the ventilation conditions. After transformation, the highest CO concentration in each roadway is 23ppm, the highest SO2 concentration is 5ppm, the highest respirable dust concentration is 5mg / m3 and the lowest wind speed is 0.16m / s. All the indexes reach the standards of working environment for well lane construction, which not only ensures that workers Safety and health, and greatly increased the speed of infrastructure, to promote the record of access to the moon landed 168 m, compared with the contract duration of half a month ahead, and achieved good economic returns.