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新奥法是目前地下工程施工设计推行的一种新方法技术。该法与以往的施工方法相比较,根本不同的一点就是引入对围岩变形实行控制的量测和反馈,把量测纳入到施工管理中去并作为重要的一环,尤其在不良地质条件下,更加明显地表明量测的重要意义和效果。本文结合八一大型公路隧道新奥法的施工,根据重庆公路科研所现场测试的部分资料,主要对开挖施工过程中的周边位移、拱顶下沉、围岩松弛变形和爆破振动量测做了论述分析,为大型隧道在不良地质中新奥法监控量测提供了实例,具有一定参考价值。
The new Austrian law is the underground engineering construction design and implementation of a new method of technology. Compared with the previous construction methods, this method is fundamentally different from that of measuring and feedbacking the control of deformation of surrounding rock. It is an important part of the measurement management to be incorporated into construction management, especially under adverse geological conditions , More clearly show the significance of measurement and effect. In this paper, in combination with the construction of the new Austrian law of the Bayi-large highway tunnel, according to the field test data of Chongqing Highway Research Institute, the author mainly analyzes the surrounding displacement, vault settlement, surrounding rock deformation and blasting vibration measurement during the excavation The discussion and analysis provide a practical example for the monitoring of large tunnels in the bad geology by the New Austrian law, which is of certain reference value.