隧道光面爆破施工关键技术

Key Technologies of Tunnel Smooth Blasting Construction

针对黔张常铁路大坡隧道工程断面大、掘进困难等问题,采用了光面爆破施工技术,为使爆破效果能够满足设计要求,对爆破参数、装药量及炮眼数量进行了理论计算,并在现场进行试验验证,总结了隧道光面爆破技术的关键施工工艺,该项技术成果可为类似工程施工提供经验借鉴,具有较高的工程应用价值。

In view of the problems of large cross section and difficult excavation of DapoTunnel of QianJiang-ZhangJiaJie-ChangDe Railway,smooth blasting construction technology is adopted.In order to make the blasting effect meet the design requirements,the blasting parameters,charge quantity and the number of blasting holes are calculated theoretically,and the field test is carried out.The key construction technologies of smooth blasting technology for tunnel is summarized.This technical achievement can provide experience for similar project construction and has high engineering application value.