新奥法原理在隧道坍方处理中的应用

An Applied Method with Concept of NATM in the Case of Rock Collapse in Tunneling

隧道在开挖过程中一旦出现坍方,以往多采用强支、硬顶,以清方为主进行处理,造成衬砌荷载进一步增加,留下隐患。本文运用新奥法原理,采用加固围岩、固结坍体、提高并充分利用岩体的结构性能,安全、高效地处理坍方,并可消除工后病害。

In the past it is very popular to take the method of supporting once collapsing occurs in tunneling in the course of tunnel excavation, resulting in increasing of load applied on lining. Therefore nowadays according to NATM principle, rock reinforcement and consolidation are used. In this case, surrounding rock mass can be improved to be safely self-stand as 'rock structures'.