Research on Combined Perforation and Blasting Technology for Increasing Permeability in Low-Permeability Hard Coal Seams
To address the low efficiency and uncontrollable fracture expansion in gas extraction from low-permeability hard coal seams, a synergistic permeability enhancement technology integrating loose blasting and hydraulic perforation (LBHP) is proposed. Combined with theoretical analysis, ANSYS/COMSOL numerical simulatio...