what is the minimum percentage of oxygen concentration in underground air quality for tunnel
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Answer: The minimum percentage of oxygen concentration in underground air quality for tunnel
=0.195
Explanation:
Ventilation plans for underground mines:
The manager of an underground mine
must ensure that a plan of the ventilation system at the mine is kept at the mine that shows the direction, course and volume of air currents, and the position of all air doors, stoppings, fans, regulators and ventilating devices, in the mine.
It is important to understand the influence of following factors in determining the effectiveness of the ventilation planning process:
- the mine plan and schedule
- mine design and method
- modelling of airflow
- development of ventilation plans and schedules
- diesel equipment
- contaminants – both naturally occurring and man-made.
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