一、概述 我们所讨论的开挖爆破对隧道围岩稳定性的影响,主要是指对围岩的破坏扰动深度。爆破对隧道围岩的破坏大致有两方面:在爆源一定的距离内,在爆炸冲击和生成物高温、高压直接作用下,围岩发生破碎坍落;稍远处,伴随冲击波在围岩中的传播,对围岩产生扰动。 I. Overview The effect of the excavation blasting we discussed on the stability of the surrounding rock of the tunnel mainly refers to the disturbance disturbance depth to the surrounding rock. The destruction of surrounding rock by blasting has roughly two aspects: the rock mass breaks down and slumps under the impact of blast and the high temperature and high pressure of the resultant material within a certain distance of the blasting source; at a distance, with the shock wave in the surrounding rock The spread of the disturbance on the surrounding rock.