摘要
隧洞爆破设计有孔眼直径、炸药、装药结构、装药量、起爆网等。开挖方法分别采用半断面及全断面两种爆破开挖方式,对于台阶开挖的Ⅳ、Ⅴ围岩,采用弱爆破,对于Ⅱ、Ⅲ围岩类采用全断面光面爆破。在钻爆施工中,对爆破参数通过理论数据和实践数据相结合,做到既能达到预期的光爆效果又能节省材料的同时,减少返工补炮,保证工期,控制成本。
The tunnel blasting includes design of perforation diameter,explosive,charge structure,charge quantity,charge network,etc.Excavation methods adopt half section and section two blasting excavation method respectively.For IV,V surrounding rock class of the step excavation,the weak blasting;for II,III surrounding rock class,full face blasting.In the drilling and blasting,the blasting parameters through the combination of theory data and practice data,the desired effect of smooth blasting can be achieved,and at the same time it can save materials so as to reduce rework,guarantee time limit for a project,control cost.
出处
《黑龙江水利科技》
2014年第6期4-7,共4页
Heilongjiang Hydraulic Science and Technology
关键词
周边孔
掏槽孔
起爆方法
装药量
洞爆破
surrounding hole
cut hole
blasting charge method
charge quantity
hole blasting
