圆型束孔与当量大孔爆破效应的动光弹研究  

Dynamic photoelastic research on explosive effects of circular beam hole blasting and equivalent hole blasting

作　　者：宋卫东[1] 任天贵[1] 丁钦贡[1] 

机构地区：[1]北京科技大学

出　　处：《化工矿山技术》1993年第2期16-20,共5页

摘　　要：采用WD22—1型动光弹仪,记录了环氧树脂材料中圆型平行束孔和当量大孔的爆炸应力波传播和裂纹扩展的动态过程。定量地对比了两者之间的爆炸应力场,说明它们之间的异同,对圆型束孔和当量大孔的爆破效应进行了研究。指出了圆形束孔优于当量大孔的主要原因。为平行束孔的爆破机理的研究提供了一种新的实验方法。WD 22-1 photoelastic analyser is used to monitor the dynamic process of stress wave progation and crack expansion in circular- parallel beam hole blasting and its equivalent hole blasting. Quantative comparison of explosive stress field and study of explosive effects demonstrate the similarities and differences between the two blasting methods and superiority of the former over the latter. This research provides a new experimental method for study of mechanism of parallel beam holes blastin-g.

关 键 词：动光弹分析 应力波 圆型束孔 爆破 

分 类 号：TD235.11[矿业工程—矿井建设]