盾构法施工在过江隧道中的风险及应对措施刍议

Risk of Shield Method in River-crossing Tunnel Construction and Countermeasures

目前,盾构法施工被广泛应用于过江隧道的施工过程中。本文首先对盾构法施工进行了概述,从盾构机适应性和可靠性风险、开挖面障碍物风险、隧道上浮风险以及工作面失稳、透水以及塌方风险方面探讨了直径12m、双线南京过江通道盾构法施工中的风险及应对措施,以期为盾构法施工在过江隧道中的风险控制提供一些参考。

At present, shield construction method is widely used in the construction process of tunnel across the river. This article firstly gives an overview of the shield construction method, and then discusses the risk of the 12m-diameter double line Nanjing river-crossing tunnel shield construction from the shield machine adaptability and reliability risk, excavation obstacles risk, tunnel floating risk working face instability risk, leakage risk and landslides risk, and discusses the countermeasures, so as to provide some reference for shield construction method in the risk control of tunnel across the river.