The Experts below are selected from a list of 228 Experts worldwide ranked by ideXlab platform
Alex C Smith - One of the best experts on this subject based on the ideXlab platform.
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modeling carbon monoxide spread in underground Mine Fires
Applied Thermal Engineering, 2016Co-Authors: Liming Yuan, L Zhou, Alex C SmithAbstract:Carbon monoxide (CO) poisoning is a leading cause of Mine fire fatalities in underground Mines. To reduce the hazard of CO poisoning in underground Mines, it is important to accurately predict the spread of CO in underground Mine entries when a fire occurs. This paper presents a study on modeling CO spread in underground Mine Fires using both the Fire Dynamics Simulator (FDS) and the MFIRE programs. The FDS model simulating part of the Mine ventilation network was calibrated using CO concentration data from full-scale Mine fire tests. The model was then used to investigate the effect of airflow leakage on CO concentration reduction in the Mine entries. The inflow of fresh air at the leakage location was found to cause significant CO reduction. MFIRE simulation was conducted to predict the CO spread in the entire Mine ventilation network using both a constant heat release rate and a dynamic fire source created from FDS. The results from both FDS and MFIRE simulations are compared and the implications of the improved MFIRE capability are discussed.
Liming Yuan - One of the best experts on this subject based on the ideXlab platform.
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numerical and experimental investigation of carbon monoxide spread in underground Mine Fires
Journal of Fire Sciences, 2018Co-Authors: L Zhou, Liming Yuan, D Bahrami, Richard A Thomas, James H RowlandAbstract:The primary danger with underground Mine Fires is carbon monoxide poisoning. A good knowledge of smoke and carbon monoxide movement in an underground Mine during a fire is of importance for the des...
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modeling carbon monoxide spread in underground Mine Fires
Applied Thermal Engineering, 2016Co-Authors: Liming Yuan, L Zhou, Alex C SmithAbstract:Carbon monoxide (CO) poisoning is a leading cause of Mine fire fatalities in underground Mines. To reduce the hazard of CO poisoning in underground Mines, it is important to accurately predict the spread of CO in underground Mine entries when a fire occurs. This paper presents a study on modeling CO spread in underground Mine Fires using both the Fire Dynamics Simulator (FDS) and the MFIRE programs. The FDS model simulating part of the Mine ventilation network was calibrated using CO concentration data from full-scale Mine fire tests. The model was then used to investigate the effect of airflow leakage on CO concentration reduction in the Mine entries. The inflow of fresh air at the leakage location was found to cause significant CO reduction. MFIRE simulation was conducted to predict the CO spread in the entire Mine ventilation network using both a constant heat release rate and a dynamic fire source created from FDS. The results from both FDS and MFIRE simulations are compared and the implications of the improved MFIRE capability are discussed.
W H Pomroy - One of the best experts on this subject based on the ideXlab platform.
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remote detection of underground coal Mine Fires using geophysical methods
AAPG Bulletin, 1995Co-Authors: K L Hauser, D R Tweeton, W H PomroyAbstract:Abandoned coal Mine Fires can be found in coal basins across the United States and around the world. These Fires can burn for decades, resulting in the emission of toxic gasses and smoke, and prompting subsidence damage to both homes and property. In order to facilitate containment and extinguishment of abandoned underground Mine Fires, the location of the active burn front must be deterMined. Borehole temperature measurements are a reliable means of ascertaining subsurface conditions. Because burn fronts may extend over large areas and take on complex configurations, numerous boreholes may be necessary to accurately assess the situation. This approach can lead to excessive costs if employed on a routine basis. As part of continuing research efforts to characterize and control abandoned underground Mine Fires, the U.S. Bureau of Mines recently completed investigations to deterMine the effectiveness of several geophysical methods in mapping subsurface anomalies related to excessive heating. Magnetic gradient, electromagnetic induction, and controlled source audio-magnetotelluric profiling methods were tested at a known underground Mine fire site in Wyoming. These non-invasive techniques are employed from the surface, and are capable of measuring changes in the conductivity or magnetic properties induced in rock by the heating action of a passingmore » burn front. Systematic use of geophysical methods may reduce the number of boreholes required to complete a dependable assessment of subsurface conditions, and can guide the placement of boreholes to their most diagnostic and economic use.« less
L Zhou - One of the best experts on this subject based on the ideXlab platform.
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numerical and experimental investigation of carbon monoxide spread in underground Mine Fires
Journal of Fire Sciences, 2018Co-Authors: L Zhou, Liming Yuan, D Bahrami, Richard A Thomas, James H RowlandAbstract:The primary danger with underground Mine Fires is carbon monoxide poisoning. A good knowledge of smoke and carbon monoxide movement in an underground Mine during a fire is of importance for the des...
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modeling carbon monoxide spread in underground Mine Fires
Applied Thermal Engineering, 2016Co-Authors: Liming Yuan, L Zhou, Alex C SmithAbstract:Carbon monoxide (CO) poisoning is a leading cause of Mine fire fatalities in underground Mines. To reduce the hazard of CO poisoning in underground Mines, it is important to accurately predict the spread of CO in underground Mine entries when a fire occurs. This paper presents a study on modeling CO spread in underground Mine Fires using both the Fire Dynamics Simulator (FDS) and the MFIRE programs. The FDS model simulating part of the Mine ventilation network was calibrated using CO concentration data from full-scale Mine fire tests. The model was then used to investigate the effect of airflow leakage on CO concentration reduction in the Mine entries. The inflow of fresh air at the leakage location was found to cause significant CO reduction. MFIRE simulation was conducted to predict the CO spread in the entire Mine ventilation network using both a constant heat release rate and a dynamic fire source created from FDS. The results from both FDS and MFIRE simulations are compared and the implications of the improved MFIRE capability are discussed.
K L Hauser - One of the best experts on this subject based on the ideXlab platform.
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remote detection of underground coal Mine Fires using geophysical methods
AAPG Bulletin, 1995Co-Authors: K L Hauser, D R Tweeton, W H PomroyAbstract:Abandoned coal Mine Fires can be found in coal basins across the United States and around the world. These Fires can burn for decades, resulting in the emission of toxic gasses and smoke, and prompting subsidence damage to both homes and property. In order to facilitate containment and extinguishment of abandoned underground Mine Fires, the location of the active burn front must be deterMined. Borehole temperature measurements are a reliable means of ascertaining subsurface conditions. Because burn fronts may extend over large areas and take on complex configurations, numerous boreholes may be necessary to accurately assess the situation. This approach can lead to excessive costs if employed on a routine basis. As part of continuing research efforts to characterize and control abandoned underground Mine Fires, the U.S. Bureau of Mines recently completed investigations to deterMine the effectiveness of several geophysical methods in mapping subsurface anomalies related to excessive heating. Magnetic gradient, electromagnetic induction, and controlled source audio-magnetotelluric profiling methods were tested at a known underground Mine fire site in Wyoming. These non-invasive techniques are employed from the surface, and are capable of measuring changes in the conductivity or magnetic properties induced in rock by the heating action of a passingmore » burn front. Systematic use of geophysical methods may reduce the number of boreholes required to complete a dependable assessment of subsurface conditions, and can guide the placement of boreholes to their most diagnostic and economic use.« less