Ventilation

The state of the mine ventilation needs to be monitored to ensure that the quantity of air is maintained consistently and that emitted gas levels are maintained below safe threshold levels Monitoring is done both manually and by the use of continuously operating monitors that may indicate remotely, often to the surface Ventilation; Coal Transport...

Underground mine ventilation

Underground mine ventilation provides a flow of air to the underground workings of a mine of sufficient volume to dilute and remove dust and noxious gases (typically NO x, SO 2, methane, CO 2 and CO) and to regulate temperatureThe source of these gases are equipment that runs on diesel engines, blasting with explosives, and the orebody itself The largest component of the operating cost for ....

Measurements of Airflow and Mine

The important properties of mine ventilation include air velocity and ventilation pressure, and air temperature in cases where heat is a problem When these properties are known at various strategic points in the mine, the overall quantity control problem can be resolved by utilizing analytical and/or numerical methods of flu...

Ventilation fan turns in underground mine

Jun 29, 2013· We came across a ventilation fan still turning from natural air flow inside of an abandoned underground mine...

Mine Ventilation Fan | Mining Fans

Main Mine Ventilation Fans Main mine ventilation fan is a large fan or combination of fans responsible to generate flow for total air requirement in an underground mine because it ventilate the main circuit of mine, therefore, it is term as "main mine ventilation fans" and sometimes it is called as surface fan because it is instaled on surface of the mine, in an underground mine this fan is ....

Ventilation Control Devices

Ventilation on Demand (VOD) allows an underground mine's ventilation circuit to be electronically controlled delivering airflow efficiency, reduced electricity and rapid access to production areas To control air flow at stope accesses and draw points, ore passes and the general direction of ventilation throughout mine areas we offer ....

Ventilation

233 Kb: Explosion evaluation of mine ventilation stoppings Permanent stoppings are utilized to control and direct the ventilation air flow through underground coal mines to dilute and render harmless methane, entrained coal dust, and other contaminants at the working face and other areas of the mine...

Experiments with Air Flow Control in a Coal Mine

The problem of automatic control of a coal mine ventilation network is discussed It is found that the structure of the control sys- tem should have two levels, ie local regulation of ventilation para- meters (air flows) in faces to eliminate the effect of quick disturba- noes, and supervisory control of the whole ventilation process....

Atkinson resistance

Atkinson resistance is commonly used in mine ventilation to characterise the resistance to airflow of a duct of irregular size and shape, such as a mine roadway It has the symbol and is used in the square law for pressure drop, = where (in English units) is pressure drop (pounds per square foot), is the air density in the duct (pounds per cubic foot),; is the standard air density (0075 ....

CHAPTER 10 FANS

Chapter 10 Fans Malcolm J McPherson 1 , booster fans assisting the through-flow of air in discrete areas of the mine and auxiliary fans to overcome the resistance of ducts in blind headings Fans may also be , as main fans for mine ventilation systems while ,...