连续阻隔减震技术在沉管隧道连续墙拆除爆破中的应用

Application of Shock Absorption Technology with Continuous Damping Barriers on Blasting Demolition of a Continuous Wall in Immersed Tunnel

运用减震理论对被保护封门和主体结构的爆破质点振动速度进行预测,在预测的基础上采用预裂爆破、多重连续阻隔减震措施。爆后实践证明,结果与理论计算基本吻合,保证了封门和主体结构的安全。

The blasting vibration velocities of the protected sealed door and main structure were respectively predicted by shock absorption technology before taking blasting on a continuous wall in immersed tunnel with pre-blasting technology and continuous damping barriers. The blasting effects show that the sealed door and main structure are safe enough during the blasting, and the actual vibration results are basically in agreement with the theoretical calculation.