关键词: 立井掘进, 切缝药包, 控制爆破, 光面爆破

Abstract: In view of the problem of low utilization rate in coal mine shaft blasting hole ,poor molding,uses the cutting seam cartridge directional fracture control blasting technology. By using cut tube charge in the contour hole,under the premise of constant single hole charge, reduces the number of contour hole from 52 to 35, hole distance increases from 600mm to 800mm and implements the control blasting. Field blasting application effect shows: cut tube energy accumulated charge control blasting can significantly improve the utilization rate of blasting hole and hole mark rate, half hole mark rate increased by 52%, shaft contour roughness is in±5cm ,contour hole cut tube charge can reduce the blasting disturbance and damage to surrounding rock,improve the smoothing blasting effect, improve the shaft heading speed.