The study of the “water plug” effect on the permeability of the composite coal mass mixed with grouting and graded sampl

The study of the “water plug” effect on the permeability of the composite coal mass mixed with grouting and graded sampl Journal of Mining and Safety Engineering . 2025, (3): 648 -659 . DOI: 10.13545/j.cnki.jmse.2024.0283