Conventional and numerical models of blasting gas behaviour in auxiliary ventilation of mining headings

A Simulation Study on the Reconstruction of Coalmine Ventilation System Based on Wind Resistance Correction

“…Computer simulation technology of mine ventilation system plays the irreplaceable role in the change prediction and system design [6][7][8][9]. However, computer simulation technology requires accurate basic parameters in the mine ventilation system.…”

Coal Seam Methane Abatement and Utilization Techniques with Availability and Feasibility Criteria

“…If the concentration of methane in vent air not above 2% there must be an addition of CH4 in the feed air so as to be used as a subsidiary fuel. Methane recovered from pre and post mining operations and low concentrated methane in ventilation air can also be used in these turbines [34]. An experimental result obtained from the recovered methane of two gassy coal mines of Australia which implemented 0.8% and 2% methane in gas turbines and found that 50% to 60% of the fuel for igniting 1% methane catalytic turbine while 30% to 60% of the fuel for igniting methane catalytic turbine is the ventilation air methane.…”

“…This ventilation air not only diluted the combustion process but also cools down the turbine and because of it a sufficient fraction of methane will pass through the turbine without any combustion. To avoid this incomplete combustion a complex turbine system that not only require compressed from other source but also needed compressed ventilation air [34,41]. If VAM is used with solar turbines then the concentration of methane should lower than 0.5% in order to maintain the unit system cool.…”

“…Variation in the concentration of methane and flow rate of air can cause a negative impact on the operational performances of the equipment. For instance if during combustion the concentration of ventilation air increased it can damage the equipment, residuals and slagging [34]. …”

Computational evaluation of thermal management strategies in an underground mine

“…To date, several mathematical models had been proposed in the area of mine ventilation ranging from zero-dimensional heat transfer model [5], one-dimensional network flow model [6] to three-dimensional computational fluid dynamics (CFD) models focusing on ventilation airflow [7e9], airflow ventilation-methane for steady [10e12] and transient [13] behavior, airflow ventilationdust control [14e17], airflow ventilation-diesel emission control [18,19], airflow ventilation-fire [20,21] and airflow ventilationblasting gas [22] behaviors. None of these studies, however, had focused on three-dimensional modeling of thermal management in underground mines which is the theme of this paper.…”