护壁爆破新技术  

New technology of double-pipe protecting borehole wall blasting

作　　者：蒲传金[1] 肖正学[1] 张志呈[1] 郝亚飞[1] 

机构地区：[1]西南科技大学环境与资源学院,四川绵阳621010

出　　处：《中国工程科学》2009年第8期88-92,共5页Strategic Study of CAE

摘　　要：针对光面爆破和定向断裂控制爆破存在的问题,提出了护壁爆破系列新技术,对其分类、护壁装置、护壁原理作了详细介绍。单孔模型试验和巷道掘进实验结果表明,该技术有非常好的护壁效果。该技术的开发与应用,为边坡开挖和隧道掘进等工程的爆破提供了一条便捷的途径,具有广阔的应用前景。Double-pipe protecting borehole wall balsting, a new control blasting technology, is put forward and defined, which aims at resolving the problems existing in conventional smooth blasting and directional fracture controlled blasting. The characteristics of the new blasting technology, matching sets and explosion mechanism are detailedly introduced in the paper. The results of experiment on single borehole model blasting and tunnel digging testing indicate that it has very good blasting effect. As a result of high speed photography, crannies are initiated and propagated and concrete medium are fractured in controlled direction. Invention and application of its technology provide an effective and convenient way to obtain good effect of slope excavation and trunnel driving. It shows a bright prospect of widespread applications.

关 键 词：爆破工程 护壁装置 爆破原理 动态应变 

分 类 号：TD235.373[矿业工程—矿井建设]