护壁爆破的基本原理与爆破效果的声波评价  

Principle of Double-pipe Protecting Borehole Wall Blasting and Sonic Wave Evaluation of Blasting Effect

作　　者：郭学彬[1] 张志呈[1] 蒲传金[1] 史瑾瑾[1] 冯德润[2] 

机构地区：[1]西南科技大学环境学院,四川绵阳621010 [2]四川双马水泥股份有限公司石灰石矿,四川绵阳621716

出　　处：《爆破》2006年第4期9-14,共6页Blasting

基　　金：绵阳市科委资助项目

摘　　要：采用半圆套管的护壁爆破技术在产生定向裂隙的同时,保留部分的岩体还受到套管的保护,可避免爆破损伤。论述了在爆破冲击波和爆炸气体准静压作用下,双侧和单侧半圆套管的护壁的基本原理,以及套管护壁爆破和光面爆破效果对比试验的声波评价。Although semicircular double-pipe protecting borehole wall blasting technology brings about directional cracks, reserved rock can be is protected by double-pipe, and blasting darnnification can be avoided. Principle of bilateral and unilateral semicircular double-pipe protecting borehole wall blasting in blasting shock-wave and quasistatic stress effect of gaseous explosion product are discussed in this paper. Comparative testing of double-pipe pro- tecting borehole wall blasting and smooth blasting and sonic wave evaluation are accomplished.

关 键 词：爆炸力学 断裂控制爆破 双侧套管护壁 单侧套管护壁 声波评价 

分 类 号：TD235.1[矿业工程—矿井建设]