Charging structure for hard rock blasting

• Main Authors: LIU LEI, ZHANG XIANGPING, GUO ZIRAN, SUN YUDONG
• Format: Patent
• Language: Chinese; English
• Published: 24.03.2023
• Subjects: AMMUNITION; BLASTING; HEATING; LIGHTING; MECHANICAL ENGINEERING; WEAPONS

The invention relates to a charging structure for hard rock blasting. The structure comprises round covers arranged at the two ends of the explosive, and each round cover comprises a bottom cover installed at the bottom of a blast hole and an outer cover installed on the outer side of the bottom cover; an explosive mounting area is arranged between the bottom cover and the outer cover, a stemming sealing area is arranged on the side, away from the bottom cover, of the outer cover, and a top cover is arranged on the side, away from the outer cover, of the stemming sealing area. By arranging the bottom cover and the outer cover at the two ends of the explosive, the energy gathering effect is improved. According to the method, rock mass can be fully broken, the explosive blasting cracking range is expanded, and the hard rock tunnel presplitting loosening blasting effect is improved. 本发明涉及一种硬岩爆破用装药结构。该结构包括设置于炸药两端的圆盖，圆盖包括安装在炮孔底部的底盖和安装在底盖外侧的外盖；底盖和外盖之间为炸药安装区，外盖远离底盖的一侧为炮泥封口区，炮泥封口区远离外盖的一侧设置顶盖。通过在炸药两端设置底盖和外盖，提高能量聚集的效果。