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- Mine locations, excavations, and structures:
- Gobs
- Document types:
- Peer reviewed journal articles
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Results 1 - 10 of 10
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2/1/2012 - Peer reviewed journal articlesNIOSH conducted a cooperative research study to provide direct measurements of changing reservoir conditions in longwall panel overburden.
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3/1/2010 - Peer reviewed journal articlesIn this paper, Computational Fluid Dynamics modeling of the effect of longwall face advance on the spontaneous heating of coals in a two-panel gob area using a bleeder ventilation system is presented.
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11/1/2008 - Peer reviewed journal articlesA computational fluid dynamics (CFD) study was conducted to model effects of coal properties on the potential for spontaneous heating in longwall gob (mined-out) areas.
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8/1/2008 - Peer reviewed journal articlesTo provide insights for the optimization of bleederless ventilation systems for U.S. underground coal mines, a computational fluid dynamics study was conducted to model spontaneous heating in longwall gob areas using a bleederless ventilation system.
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12/1/2007 - Peer reviewed journal articlesComputational Fluid Dynamics simulations were conducted to investigate the spontaneous heating of coals in longwall gob areas with different apparent activation energies and reaction surface areas. The results are reported in this paper.
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1/1/2020 - Peer reviewed journal articlesAn article detailing observations of the non-typical bleeder entries of a moderate depth longwall panel, with a primary focus on the extent and magnitude of the abutment loading.
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3/1/2018 - Peer reviewed journal articlesAn article about a study to analyze production performances of gas gov ventholes drilled over a longwall panel as a methane control measure.
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1/1/2011 - Peer reviewed journal articlesGob gas ventholes capture methane emissions. This study used bivariate normal distributions to determine the conditional probabilities of depth-displacement, depth-flow percentage, depth-formation, and depth-gas content of the overburden formations.
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7/1/2010 - Peer reviewed journal articlesDuring longwall mining, fracturing and relaxation in the gob creates new and highly permeable flow paths. The production rate-pressure behavior of a gob gas venthole (GGV) drilled over a longwall panel was analyzed by using multi-rate drawdown and decl...
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3/1/2010 - Peer reviewed journal articlesThis work presents a fractal porous medium model to predict gob porosity and permeability for controlling methane flow and to predict air leakage into the gob.
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Content source: National Institute for Occupational Safety and Health, Mining Program