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采用及型高效采煤机提高煤产量,采煤工作面的降尘问题更显突出。靠采煤机旧的喷雾系统难以保证有效降尘。这是由于工作面软管寿命低,内外水管易产生故障,喷咀经常堵塞,因而整个喷雾系统可靠性差,且降尘参数也不理想。采用标准喷雾系统耗水量为吨煤55L时,降尘效果较高,可达95～97％。但如此大的耗水量势必造成落煤过于潮湿,降低煤质并增加冬季运煤的困难。东方科学研究院对喷雾参数所进行的研究指出:喷程、引射能力,喷流中水滴的
The use of and efficient shearer to improve coal production, mining face dust problem is even more prominent. The old spray system by shearer is difficult to ensure effective dust reduction. This is due to the low working face hose life, easy to produce internal and external plumbing, nozzle often blocked, and thus the reliability of the spray system is poor, and dust parameters are not satisfactory. The standard spray system consumes 55 tons of coal per ton of coal, the dust reduction effect is high, up to 95 ~ 97%. But such a large amount of water consumption will inevitably lead to over-humid coal, reduce coal quality and increase the difficulty of winter coal transport. Oriental Institute of Science on the spray parameters carried out by the study pointed out: Spray, ejection ability, the jet of water droplets