易碎岩石大粒径石料开采爆破关键参数研究

摘要

随着外海建港项目的增多,在易碎岩石中集中爆破生产大粒径规格石料成为一个难题.通过分析应力波和爆炸气体对裂隙走向和长度的影响,提出了增大最小抵抗线和填塞长度、减小孔间距的单排孔开采方案,以及关键参数的计算公式,并多次得到工程实践的验证.%With the increase of construction projects in offshore sea port,producing large particle size dimension stone in fragile rocks by blasting technology is a difficult problem. The influence of stress wave and explosive gas on fracture strike and length are discussed. A single row hole mining method of increasing minimum burden and explosive charging length, decreaseing boreholes space were put forword,il also gives some calculating formulas of key blasting parameter was given to,offer reference for future similar projects.