长壁工作面的呼吸性粉尘始终是一个行业性问题。根据美国矿山安全与健康管理局的调查,长壁工作面滚筒采煤机司机,要比工作面其它设备司机接触的呼吸性粉尘量多得多。事实上,管理局也认为,大多数采煤机司机处的粉尘浓度难以达到联邦规程规定的2mg/m~3的粉尘标准,特别是在使用双滚筒采煤机的情况下。 Respiratory dust on longwall faces is always an industry issue. According to a survey conducted by the US Mine Safety and Health Administration, drivers of longwall coal face drum shearers have much more breathing dust than drivers of other equipment at the work surface. In fact, the Authority also believes that the dust concentration at most shearer drivers is hard to meet the dust specification of 2 mg / m³ as prescribed by the federal regulations, especially when using double drum shearers.