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When a fire occurs, heat and smoke are generated. This has a great impact on the human body. When there is smoke and heat, it has an impact on a fast evacuation. That?s why every fire escape route plan is trying to secure the safe evacuation of people with a minimal chance of an injury caused by fire. That?s why escape routes are planned to be safe and always have good ventilation. In this day and age it is possible, with the approved standards in the Czech Republic, to put sufficient natural ventilation through t...

Anthropic activities involve the extraction of the transformation and use of natural resources. During the process of extraction at the surface or underground of useful minerals, particles or gases resulting from the natural rocking or release from the rock mass appear in the working environment. The process of transforming useful mineral substances is carried out on the surface in enclosed enclosures, involving the use of complex technological processes. During the course of these technological processes, explosi...

Considering that the underground mining of coal is used mining systems that have a high degree of complexity, and can reach cumulative lengths of tens of kilometers, associated with them we have the ventilation networks with the role of transporting important air flows with the help of special ventilation systems. The aeration networks are made up of all the mining works on which air flows are carried. Structurally, they comprise nodes and branches. The nodes of an aeration network are generated by the intersectio...