煤尘是煤矿井下五大灾害之一。是安全生产中的一大隐患。即有沉积煤尘的存在,就有大量的浮游煤尘。不但威胁矿工的身心健康,还能造成煤尘爆炸等重大事故,给国家和人民在政治上、经济上都带来巨大损失。因此,掌握煤尘沉积速度和清扫周期的变化规律及其关系,对根治沉积煤尘,防止煤尘爆炸及灾变扩大有重要意义。也是当前安全生产中需要研究解决的重要课题。为此,根据甘豪煤矿现场检测的资料和分析作简要介绍,供防尘工作者参考。 一、概述 甘豪煤矿是1984年12月投产的年产60万吨矿井。煤种为主焦煤,属于瓦斯、煤尘爆炸危险的矿井。煤层厚3～4米,煤层倾角12度。现有两个采区:一、三采区生产,二采区在开 Coal dust is one of the five major coal mine disaster. Is a major safety hazard. That is, the existence of deposited coal dust, there is a lot of floating coal dust. Not only threatening the physical and mental health of miners, but also causing major accidents such as coal dust explosions, bringing huge losses to the country and the people politically and economically. Therefore, grasping the law and relationship between the deposition rate of coal dust and the cleaning cycle has great significance for the radical deposition of coal dust, prevention of coal dust explosion and catastrophe expansion. It is also an important issue to be solved in current safety production. To this end, based on Gan Hau mine site testing data and analysis for a brief introduction for dust-proof workers for reference. I. Overview Ganhao Coal Mine was put into operation in December 1984 with an annual output of 600,000 tons of mines. Coking coal-based, belonging to gas, coal dust explosion hazard mine. Seam thickness of 3 to 4 meters, coal seam angle of 12 degrees. There are two existing mining areas: one or three mining production, mining area in the second