Engineering
5 years ago

Protective coal seam mining impacts gas drainage with permeability distribution

Energy Sources Part A Recovery Utilization and Environmental Effects
Permeability distribution characteristics of underlying coal seam disturbed by mining activity
Hengyi Jia, Kai Wang, Chao Xu, Qiang Fu

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The researchers studied how mining affects the permeability of coal seams to improve safety. They created a model to see how stress changes during mining and how it impacts the coal seam's ability to let gas pass through. They found that the permeability of the coal seam changes in different zones as mining progresses. Gas drainage measurements matched the permeability changes in the coal seam.