金城江采石场建于1964年,主要生产线路维修用的道碴,桥梁,房舍用的片石及碎石等石料。目前年产量约1.1000吨。1981年以前,全场片石破碎整套工序均为干式作业,作业场所空气中粉尘浓度最高达3115.56mg/m~3,最低为29.08mg/m~3。有粉尘作业点21点,符合国家标准的仅有4点,符标率只达9.04％,严重危害职工身体键康。从1981年开始,对全场片石破碎整套工序采取湿式降尘措施,并收到一定效果。 Jinchengjiang quarry was built in 1964, the main production lines used ballast maintenance, bridges, houses and other stone tablets and gravel. The current annual output of about 1.1000 tons. Before 1981, the whole process of flaky stone crushing was dry-typed. The dust concentration in the workplace was up to 3115.56 mg / m ~ 3 and the lowest was 29.08 mg / m ~ 3. Dust operating point 21 points, in line with national standards, only 4 points, the standard rate of only 9.04%, seriously endanger the health of workers and key health. Since 1981, wet dust reduction measures have been taken on the entire set of flake broken procedures and received certain results.