扇形布孔底起爆破岩机理的全息动光弹研究  

Study of rockbreaking mechanism in the case of segmental blasting holes & hole-bottom detonation by means of dynamic hole-photoelastic method

作　　者：宋卫东[1] 章启忠[2] 邹建刚[2] 

机构地区：[1]北京科技大学土木与环境工程学院,北京100083 [2]武钢大冶铁矿,湖北黄石435006

出　　处：《矿业工程》2003年第3期55-58,共4页Mining Engineering

摘　　要：对扇形布置 3孔间柱状装药孔底起爆的爆炸应力场形成的特点、应力波叠加及应力场动态变化过程进行分析和研究 ,从理论上探讨扇形孔破岩机理 。Analysis & research are made about the feature of blasting stress field formation in the case of segmental blasting holes with column loading and hole\|bottom detonation,about the stress waves overlap and about the dynamic change of stress field,Thus the mechanism of rock breaking by blasting is theoretically cleared.Based on results of this analysis & research,technological measures mines should take in the practice are introduced.

关 键 词：扇形布孔 孔底起爆 破岩机理 爆炸应力场 应力波 全息动光弹 

分 类 号：TD23[矿业工程—矿井建设]