辉绿岩人工骨料开采爆破技术

The Blasting Technology for Exploitation of Artificial Aggregate of Dolerite

以几内亚苏阿皮蒂水电站为例,对辉绿岩料场爆破开采技术进行了研究。采用小孔径耦合连续装药、大孔距、小排距、微差起爆等技术,提高了炮孔利用率,将爆破大块率降至5%,加快了开采速度,降低了作业成本。

Souapiti Hydropower Project in Guinea is exampled to study technology on exploitation of dolerite quarry by blasting. Measures such as coupling continuously charging with small hole diameter, large hole spacing, small row spacing and millisecond blasting, etc. are applied to improve blasting hole utilization. The large block rate by blasting is decreased to 5%. The exploitation speed is increased and the blasting operation cost is decreased.