滦县石矿推广应用大区多排微差爆破效果好

• 作 者: 黄明辉
• 机 构: 滦县石矿
• 出 处: 化工矿山技术
• 发表日期: 1978年05期
• 关键词: 微差爆破 滦县 工作线 电雷管 爆破效果 铵油炸药 石灰石 裂隙较发育 炮孔 节理

我们滦县石矿是开采石灰石的中型露天矿,采剥岩层主要为层理、节理和裂隙较发育的厚层灰岩。自1975年以来,推广应用大区多排微差爆破取得较好的爆破效果。 我矿应用大区多排微差爆矿是在原有采掘工作线长度不变的情况下增加爆区宽度。在一般情况下,一次爆破3～6排,孔数近百个,爆破岩量达数万吨。爆破使用铵油炸药,毫秒延时电雷管起爆。目前,最多可顺序起爆8组炮孔。

Our Luanxian quarry is a medium-sized open pit mining limestone, mining stripping strata mainly stratification, joints and cracks more developed thick limestone. Since 1975, popularization and application of multi-row micro-blasting have achieved better blasting results. My mining application area of ​​multiple rows of bad blasting is in the original mining line length increases the width of the explosion zone. Under normal circumstances, a blast 3 to 6 rows, the number of holes nearly a hundred, blasting rock amount of tens of thousands of tons. Explosion using ammonium oil explosives, millisecond delay detonator detonation. At present, up to eight blasting holes can be detonated in sequence.