熊国雄,刘天豪,尹东升,杨玉民,石德华

• 1:大冶有色金属有限责任公司铜绿山铜铁矿
• 2:中国地质大学(武汉)工程学院

摘要(Abstract)：

深部地应力环境下矿岩体的力学性质及破碎特征与浅部矿岩体相比存在显著差异。为了优化铜绿山铜铁矿深部采场扇形中深孔爆破参数，在分析了铜绿山铜铁矿-485中段矿岩力学特性的基础上，在-485中段9428采场开展了系列爆破漏斗试验，并对爆破漏斗关键参数进行计算和分析。基于爆破漏斗形态和炸药单耗对中深孔爆破参数提出优化建议，并开展工业实验验证合理性。研究结果表明:铜绿山矿-485中段9428采场矽卡岩的完整性等级为较破碎;爆破漏斗试验药包中心最佳埋深L_j为0.400 m，临界埋深L_e为0.898 m，应变能系数E为1.69 m/kg~(1/3)，最佳埋深比Δ_0为0.445，最佳爆破漏斗半径R_j为0.461 m，最佳爆破漏斗体积V_j为0.014 m~3;试验最佳炮孔间距为0.809 m，爆破漏斗最小抵抗线为0.740 m;基于爆破相似理论可知，生产爆破孔径为64 mm时，扇形中深孔孔底距为1.3～1.6 m，孔口距为0.8～1.3 m，排距为1.1～1.4 m。

关键词(KeyWords)： 深部开采;扇形中深孔;岩石力学特性;爆破漏斗试验;爆破参数

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金资助项目(41972286)~~

作者(Author): 熊国雄,刘天豪,尹东升,杨玉民,石德华

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