Study on permeability enhancement by deep-hole shaped-charge controlled blasting of deep soft and high gas coal seam floor

Study on permeability enhancement by deep-hole shaped-charge controlled blasting of deep soft and high gas coal seam floor Journal of Mining and Safety Engineering . 2024, (6): 1311 -1322 . DOI: 10.13545/j.cnki.jmse.2023.0507