PPE

Types of disasters in underground coal mining

Underground coal mining must excavate a series of tunnels from the ground to the underground. 1ts production process is underground operation, and the natural conditions are relatively complex. The main characteristics of mining are the need for mine ventilation, and there are five major disasters of gas, coal dust, roof, fire and water< 1. Mine ventilation. Because underground coal mine production is an underground operation, the surface air will be mixed with harmful gas and mineral dust in the process of entering underground and flowing through various workplaces, and the composition will change gradually. At the same time, due to the geothermal effect, human body and mechanical heat dissipation, water evaporation and so on, the temperature and humidity of underground air will increase significantly, resulting in adverse climatic conditions. Therefore, it is necessary to ventilate the mine2. Gas and dust disasters. 1n the process of mining coal, it is necessary to produce gas and dust. Gas and coal dust will explode under certain conditions, causing casualties and property losses; Mine dust can also make miners suffer from coal, silicosis, and bring pain to miners< 3. Roof disaster. 1n the process of underground mining, the roof will collapse due to the action of mine pressure. 1f there are loopholes in roof management, roof accidents will occur< 4. Mine fire. Mine fire is also one of the main disasters in coal mine production. Once a mine fire occurs, it will not only cause the loss of coal resources, disrupt the layout of the work, but also often cause gas and coal dust explosion, so that the extent and scope of the disaster will be expanded< 5. Mine flood. 1n the process of mine construction and production, surface water and groundwater will flow into the mine through various channels. 1n order to ensure the normal construction and production of the mine, various measures must be taken to prevent the water from entering the mine or discharging the water into the mine to the ground. However, when the mine water inflow exceeds the normal drainage capacity, or when the underground water body such as the old pond water or karst water is dug through during the mining work, the water disaster will be caused our website solemnly declares that this article is reprinted by network media, only representing the author’s point of view, and has nothing to do with our website. 1f the information column articles and comments violate your legal rights, please call to let us know and we will deal with them in time

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