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(一) 我坑属平硐溜井开拓、多中段作业,地表出口多,生产矿石通过主溜井由上往下卸矿(侧卸式)。由于矿石下放产生高速气流,形成相当大的动压进入各中段的巷道,带出大量粉尘,污染井下空气,严重影响井下职工身体健康。为尽快排除烟尘,降低主溜井的粉尘浓度。曾在基建时期,组织了生产、设计、安全等方面的老
(A) I pit is an access hole to open up the hole, multi-intermediate operation, surface exports, ore production from the top down through the main unloading (side unloading). As the ore decentralized to produce high-speed airflow, the formation of considerable pressure into the middle of the roadway, with a lot of dust, pollute the underground air, seriously affecting the health of underground workers. As soon as possible to eliminate smoke and dust to reduce the concentration of the main shaft. In the infrastructure construction period, we organized the production, design, safety and other aspects of the old