The ventilation management of Ximing Mine is not in place. At about 18:10 on June 27, 2023, a suffocation accident occurred in the Ximing Mine affiliated to Shanxi Coking Coal Group Co., Ltd., resulting in the death of 4 people. After preliminary investigation, the reason was that the ventilation management of the Ximing Mine was not in place and it was not dealt with in a timely and effective manner. There are major hidden dangers in the mine ventilation system, resulting in air flow short circuit, lack of air circulation in the mining area, and excessive gas and other harmful gases, leading to suffocation and death of workers.
What are mining areas, excavation areas, goaf areas, air inlet lanes, and return air lanes?
Why is ventilation needed underground in coal mines? Isn't it possible without ventilation? Practice has proved that it is impossible not to ventilate. Because underground production requires people, and people cannot survive without oxygen. Secondly, people continue to produce toxic and harmful gases during underground production, such as carbon monoxide, carbon dioxide, nitrogen dioxide, sulfur dioxide, hydrogen sulfide, biogas, etc. If these gases are not eliminated, people will not be able to produce. Due to the influence of factors such as ground temperature, underground harsh climate conditions need to be adjusted. The basic tasks of mine ventilation are:
(1) Supply enough fresh air underground to meet the oxygen needs of personnel.
(2). Dilute toxic and harmful gases and dust underground to ensure safe production.
(3) Adjust the underground climate and create a good working environment.
Ventilation must be carried out underground. Without ventilation, safety and production cannot be guaranteed. Therefore, mine ventilation is the most basic link in the mine production process, and it always occupies a very important position during mine construction and production.
1 Mining area
Answer: In the working area where coal mining operations are carried out.
2 Goaf area
Answer; Coal has been mined. Where the roof has fallen off.
3 Excavation area
Answer: Excavation is a common underground operation method. That is, the road is prepared for mining.
4 Inlet air alley
Answer; The alleyway through which fresh air flows is called inlet alley
5 Return air alley
Answer . The windless alleyway. That is the tunnel where the dirty wind passes
Although I have worked in the coal mine for many years. But answer accurately. Not very easy either. Haha