To address issues such as low blasting efficiency, high blasting costs, and significant blast⁃inducedvibrations during underground roadway excavation at Linglong Gold Mine, a novel charging structure and initiationmethod involving in⁃hole decking and two⁃stage stemming was proposed. This approach utilized new stemming materialsand fully leveraged the advantages of electronic detonators to achieve precise short⁃delay in⁃hole decking. The cut centerhole was modified from originally being charged with one detonator to two detonators, with precise short⁃delay in⁃holedecking of 53 ms. Two⁃stage stemming was applied to form two independent air chambers, prolonging the action time ofshock waves within the hole. Additionally, polyurethane foam glue + high⁃efficiency water⁃based stemming materialwas used to seal the outer end of the blast holes. Practical application demonstrates that after technical optimization,the use of new stemming material reduces dust and CO concentrations, shortens ventilation time, decreases explosiveconsumption per unit, and enhances production efficiency, generating significant economic benefits. This studyprovides a valuable reference for similar mining blasting operations.