What is the working principle of a mining air duct

The working principle of mining air ducts is mainly based on the pressure difference of gases and the basic principles of fluid mechanics. In the mine ventilation system, the mine air duct generates negative pressure through mechanical means, thereby achieving the introduction of fresh air and the removal of underground waste gas.
Specifically, the mining air duct generates negative pressure at the wellhead through equipment such as fans. According to the planning and design of the underground ventilation system, fresh air is introduced into the underground through the air duct. At the same time, the air duct is also responsible for sucking out the waste gas underground, including coal dust, gas, and other chemical substances, through the exhaust device to the wellhead. In this way, the normal operation of the underground ventilation system is ensured, and the accumulation of harmful gases is effectively controlled, thereby ensuring the ventilation safety of the mine.
In addition, mining air ducts can effectively discharge the body heat generated by miners and engineers working underground, ensuring that the temperature and humidity in the mine are maintained within an appropriate range, providing miners with a safe and comfortable working environment.
In general, the working principle of mining air ducts is to introduce fresh air and discharge underground waste gas through negative pressure and fluid mechanics principles, in order to ensure the ventilation safety and production efficiency of the mine.