The temperature of the coal mining face shall not be greater than how many degrees.

The temperature of the mining face shall not be higher than several degrees, as follows:

The temperature of the mining face shall not exceed 28℃.

1. About the temperature limit of coal mining face

The state has strict safety production standards and regulations, which have certain restrictions on the temperature of coal mining face. According to China's "Coal Mine Safety Regulations", the temperature of coal mining face shall not exceed 28℃. This is because the temperature is very high when mining coal deep underground. It is dangerous to exceed 28℃, which may lead to mine disaster.

2. Harm of excessive temperature

If the temperature of coal mining face is too high, it will easily lead to spontaneous combustion of shearer, which will lead to fire accidents. In addition, the human body is prone to heatstroke, heart disease, cerebrovascular accident and other physical discomfort in high temperature environment, and may even lead to death in extreme cases. Therefore, it is necessary to limit the temperature of coal mining face.

If the temperature is too high, it may cause discomfort. Working in hot weather and high temperature for a long time may also lead to heatstroke, such as vomiting and dizziness. Usually, we should pay attention to the control of indoor temperature and humidity, eat more nutritious and digestible foods rich in protein and vitamins, keep a good mood and take part in outdoor sports properly.

3. The method of keeping the temperature of coal mining face.

In order to ensure that the temperature of coal mining face does not exceed 28℃, coal mining enterprises have adopted various methods. For example, improve ventilation conditions, increase the natural ventilation and artificial ventilation capacity of mines, and ensure the supply of fresh air in mines. In addition, cooling water can also be used for cooling treatment, which can effectively reduce the temperature of coal mining face, thus achieving the purpose of ensuring the safety of coal mining operations.

Reduce the exposed area and span of mining space: the stability of mining space depends not only on the stability of ore and rock and the ground pressure of surrounding rock, but also on the span and area of roof and two exposed surfaces.

4. Concluding remarks

In a word, limiting the temperature of coal mining face is to ensure the safe production of coal mine. It is of great significance to take a series of measures to effectively maintain the appropriate temperature of the mining environment for protecting the safety of miners' lives and property and improving the production efficiency of mines.