石笕岭隧道掘进爆破方案设计

Drifting and Blasting Design for Shijianling Tunnel

摘要:

分析了石宽岭隧道短台阶掘进爆破施工中存在的问题。在使用自制简易凿岩平台可实现全断面掘进钻眼条件下，提出了全断面掘进爆破方案。采用工程类比法设计，并通过现场试验确定了合理适用的光面爆破参数。探讨了在隧道掘进中，利用非电毫秒差雷管孔外微差接力传爆，扩大起爆雷管使用段数的方法。

Abstract:

The problems in the blasting of the short terrace tunneling in Shijianling Tunnel are analyzed.Awhole section tunneling blasting scheme is proposed on condition that the simple self- made drilling platform hasbeen used for whole section tunneling,Rational and available smooth blasting parameters are determined by thedesign of engineering analogy and field practice. Also discussed ls the method of millisecond relay ignition bynonelectric millisecond detonation outside holes so as to increase the number of the relays of detonators in tunnel-mg.