Mine mining is a comprehensive project involving many aspects. It not only includes public transportation, mining, ventilation, etc., but also includes enterprise management, blasting, machinery, ecological environment protection and many other contents. Compared with other industries, there are many unsafe factors of its own, both in the work itself and in the workplace.
The mine is a closed, windless and airtight space environment, which places high demands on the health and safety of miners. Downhole oxygen concentration is an important indicator that is crucial to miners and underground operations. Oxygen is the gas that humans depend on for survival, and workers underground in mines must have enough oxygen to carry out production activities. The “Safety Regulations for Metal Mines” stipulates that the oxygen content of the underground working environment should not be less than 20% , and the fresh air volume required for underground workers is 4 m³ / minute . When the oxygen content of the underground working surface is less than 20% , workers are prohibited from operating. .
Changes in underground oxygen concentration will not only affect the health of miners, but also affect the occurrence of emergencies such as gas outbursts and coal and gas explosions. Therefore, changes in underground oxygen concentration require attention and control . According to national standards, the oxygen concentration in coal mines should be between 19.5% and 23.5% .
In order to ensure that underground oxygen concentration meets standard requirements, coal mines must take a series of measures. First, coal mines must install oxygen concentration monitors to monitor underground oxygen concentrations in real time. Secondly, coal mines must take measures to maintain underground air circulation and ensure that oxygen can be fully circulated. For example, a coal mine may install fans or ventilation ducts to promote air circulation. In addition, coal mines can also take measures to reduce underground fire and explosion sources to reduce the risk of fire and explosion. The American Southland PPM oxygen sensor – TO2-1X , represented by Gongcai.com , can be used on an oxygen detector to monitor changes in mine oxygen concentration. Its measurement range is 0-10PPM and 0-10000PPM ; it adopts micro fuel cell sensor technology and has With the characteristics of high precision and long life, it is widely used in oxygen content testing in air separation equipment, chemical & petrochemical processes, steelmaking and other fields.
