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该矿山井下采取15项综合性防尘技术措施成果,并指出该项措施的正常运行,粉尘浓度逐次下降。由干式凿岩1,156mg/m~3降至4.75mg/m~3和1.91mg/m~3。粉尘合格率从60％上升到78.8％。30年来只发生可疑尘肺9名。
The mine underground to take 15 comprehensive dust-proof technical achievements, and pointed out that the normal operation of this measure, the dust concentration decreased sequentially. By dry rock drilling 1,156 mg / m ~ 3 to 4.75mg / m ~ 3 and 1.91mg / m ~ 3. The passing rate of dust increased from 60% to 78.8%. Only 30 cases of suspected pneumoconiosis occurred in 30 years.