What is the main content of mine ventilation?

Mine ventilation refers to pumping fresh air into the mine to increase the oxygen concentration, so as to dilute and eliminate toxic and harmful gases and dust in the mine.

ventilation must be carried out underground. Without ventilation, safety and production cannot be guaranteed. Therefore, mine ventilation is the most basic link in mine production, and it always occupies a very important position during mine construction and production.

The basic tasks of mine ventilation are:

1. Supply enough fresh air underground to meet the oxygen demand of personnel;

2. Dilute and eliminate the poisonous and harmful gas and dust underground to ensure safety in production;

3. Adjust the underground climate to create a good working environment;

4. Improve the disaster resistance of the mine.

Extended information:

Ways of mine ventilation:

1. Central ventilation

Central ventilation can be divided into two types: central juxtaposition type and central discrete type (also called central boundary type).

(1) The central parallel ventilation mode is that the air intake shaft and the return air shaft are arranged in the center of the mining field, and the two air shafts are very close (generally 3 ~ 5 meters apart).

(2) The central split ventilation mode is that the intake shaft is arranged in the center of the mining field, while the return shaft is arranged in the center of the upper boundary of the mining field along the strike, and the return shafts are separated by a certain distance.

2. Diagonal ventilation

Diagonal ventilation can be divided into two types: two-wing diagonal ventilation and zonal diagonal ventilation. Two-wing diagonal type means that the air intake shaft is arranged in the center of the mining field, and the two air intake shafts are respectively arranged at the upper parts of the two wings of the mining field. The zonal diagonal type means that the upper part of each mining area is opened with return air shafts, but the main return air lanes are not opened. This method is called zonal diagonal type

3 and regional type

, and the air intake shaft and return air shaft are respectively arranged in each production area of the mining field to form independent ventilation systems.

4. Hybrid ventilation

Hybrid ventilation is a combination of central ventilation and diagonal ventilation, such as the combination of central juxtaposition and diagonal ventilation; Central determinant and diagonal combination of two wings, etc.

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