Abstract:In the past decades, many permeability models have been
proposed
to characterize the coal permeability evolution in the elastic state.
Considering that the coal near the mining working face is often in
the plastic or post-peak failure state, it is significant to characterize
the coal permeability evolution in the plastic and post-peak failure
stages for safe mining. In this study, two permeability models are
developed using a variable-order fractional derivative to characterize
the coal permeability evolution … Show more
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