what are the common occupational hazards in mining industry?

(1) Productive dust

productive dust is the main harmful factor in the mining industry. 1n the production process of drilling, blasting, loading, transportation, support, mining and filling, a large amount of dust with high silicon content may be produced. At present, many mines use wet drilling instead of dry drilling, which greatly reduces the dust concentration in the workplace. Due to different types of mines and complex geological structure, the content of free silica in dust is also different

the content of free silicon dioxide in the dust exposed to the tunneller is high, and the incidence of silicosis is more than that of the coal miner, and the average length of service is 14 years. The incidence rate of pneumoconiosis in miners is closely related to the labor protection status of enterprises. Br / >
personal protective equipment recommendation: dust mask or face mask< (2) harmful gas, commonly known as methane, is accumulated on the top of roadway. Biogas can expel oxygen from the air, causing miners to lack oxygen or even suffocate. When the concentration of biogas is constant, it will explode in case of open fire carbon monoxide and nitrogen oxides mainly come from the smoke produced by blasting, and entering the blasting site too early can cause smoke gun poisoning carbon dioxide comes from rotten wood, human respiration, blasting and coal seam in the roadway. When the concentration reaches 5%, it will cause hypoxia, and when it reaches 10%, it will cause asphyxia and death hydrogen sulfide mostly accumulates in the low-lying part of the mine or in the roadway which has been closed for a long time. Low concentration of hydrogen sulfide can stimulate the eyes, nose and upper respiratory tract. High concentration of hydrogen sulfide can cause respiratory arrest, cardiac arrest and death personal protective equipment recommendation: gas mask, air respirator, etc< (3) bad weather conditions are characterized by high temperature, high humidity and large temperature difference. For every 100 meters underground, the inflow of air increases by 1 ℃ due to compression; 1n coal mines, the temperature of rock strata can be increased by 1 ℃ every 30-35 meters. Due to the continuous seepage and evaporation of groundwater, the underground relative humidity is generally 80% - 90%. At 1000m underground, the temperature can be about 25 ~ 30 ℃ different from that at the wellhead. Therefore, miners are prone to cold, upper respiratory tract inflammation and rheumatic diseases personal protective equipment recommendations: work clothes, masks, etc (4) other hazard factors noise and vibration are mainly emitted by pneumatic tools and belt conveyors. Long term strong noise and vibration can cause occupational deafness and vibration diseases, and also hinder workers from timely identifying rock collapse and various signals high labor intensity and poor working position are easy to cause low back and leg pain, arthritis, especially bursitis. Fatigue can also make people slow, causing unnecessary accidents the main causes of trauma are side spalling, roof fall, transportation and mechanical accidents personal protective equipment recommendations: ear plugs, safety helmets, protective gloves against mechanical hazards, safety shoes for toe protection, etc

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