摘要
龙山金锑矿脉外平巷穿过的岩层属致密厚层状．含绢云母化含砂砾质板岩。在这种岩石中掘进平巷．爆破效率在60％左右。在全面分析影响爆破效率因素的基础上，进行理论计算与试验，求得解决爆破效率低的办法，使爆破效率提高到90％左右。
The rock formation of fringedrift is compact killas that contain sericitization and pebbly sandstons in Longshang Gold Antimony Mine, heading this rock,the blasting efficiency is about 60%' Based on analysis the influencing factor of blasting efficiency, the method of improving blasting efficiency and blasting high -efficiency (abbot 90%) are obtained by theoretical counting and experiments in the paper.
出处
《湖南有色金属》
CAS
1998年第1期9-12,36,共5页
Hunan Nonferrous Metals
关键词
爆破效率
掏槽
粉碎圈
炮眼间距
Blasting efficiency Underholing Crushing group Blasthole distance
