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广泛使用高效率的回采机械和掘进机械,工作面产量的增加以及工作面推进速度的加快引起了矿井空气的含尘量大大增加。用现代机械破碎煤、岩的方法时,由于切齿对煤、岩的极度粉碎而使矿井空气的含尘量达3～5千毫克/米~3以上。在这种情况下就需要根据煤层的单位生尘量和矿山机械的生尘能力而分别采取不同的防尘方法和设备。 斯阔琴斯基矿业研究所,马凯耶夫矿业安全工作科学研究所,煤炭工业安全工作东方科学研究所及其卡拉干达分所制定了煤层生尘能力的测定方法和从粉尘因素来评定采煤机的方法。根据这些方法,按产生于回采工作面空气中的粉尘量占被破碎煤的全重之比(单位生尘能力)来划分煤层的粉尘类别(克/吨)
Extensive use of high efficiency mining machinery and roadheading machinery, the increase of face production and face to promote the speed of the mine led to a significant increase in dust content of air. When crushing coal and rock by modern machinery, the amount of dust in the air in the mine reaches 3-5000 mg / m ~ 3 due to the extremely crushing of coal and rock by cutting teeth. In this case, it is necessary to take different methods and equipment for dust prevention according to the amount of dust generated per unit of coal seam and dust generation capacity of mining machinery. Slukkonski Institute of Mines, Mackayef Institute of Mine Safety, Institute of Coal Industry Safety East Institute of Science and its Karaganda branch developed a method for measuring the dust generation capacity of coal and dust from the assessment of mining factors Coal machine method. According to these methods, the dust type (g / tonne) of a coal seam is divided according to the ratio of the amount of dust generated in the working face air to the total weight of crushed coal (dust generation capacity per unit)