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一个矿工在坑内作业要遇到多少粉尘?测试表明,仅连续采矿机便能产生高达28毫克/米~3的粉尘。而在操作钻孔机和麻花钻机时,其产生的粉尘量还高得多。粉尘的“安全”标准应为低于2毫克/米~3。这说明,一个收尘器须具有90％的收尘效率方能避免矿工不受可能长久损害其肺卩的吸尘之害。
How much dust a miners should encounter in a pit? Tests show that only a continuous miner can generate up to 28 mg / m3 of dust. When operating a drill and a twist drill, the amount of dust produced is much higher. Dust “safety” standards should be less than 2 mg / m ~ 3. This shows that a dust collector must have 90% of the dust collection efficiency to prevent miners from long-term damage may be harmful to their lung Jie Jie harm.