将军山隧道光面爆破技术与参数的选择

Smooth Blasting Technique and Parameter Choice for Jiangjunshan Tunnel in Zhejiang Province

应用正台阶法开挖方法和微差、光面爆破技术,对将军山隧道掘进施工,通过合理选择爆破参数,减少了爆破对围岩的扰动,提高了隧道围岩的稳定性,控制了超欠挖量,加快了掘进速度,取得了理想的爆破效果。

Upward step excavation method and smooth blasting technique are adopted to excavate Jiangjunshan Tunnel. Through proper choice of technical parameters,the disturbance of explosion on wall rocks is reduced,the stability of wall rocks is increased,the construction cost is controlled,and blasting effect is achieved.