硬岩立井井筒钻眼爆破施工新技术New Technology of Drilling and Blasting Construction on Hard Rock Vertical Shaft
施云峰,冯旭东,魏金山
摘要(Abstract)：
对于硬岩地层立井井筒掘进施工,原来采用的钻爆施工措施,爆破效率不足60%,后经过多次咨询、调研,选用液压伞钻钻孔和高威力炸药爆破,采取二阶混合掏槽方式,同时严格控制钻孔质量,提高了爆破效率,取得较好的经济效益。
关键词(KeyWords)： 硬岩;钻眼爆破;液压伞钻;高威力炸药
基金项目(Foundation):
作者(Author): 施云峰,冯旭东,魏金山
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