This paper introduces in detail the contents, technique, and method of monitoring in Liujiawan double-arched tunel of Tongcheng-Pingjiang expressway under complex geological conditions. Based on the measured data, the ground subsidence of outlet section and stress properties of surrounding rocks and vibration velocities of blasting of tunnel excavation are analyzed. The in-time information is applied to guide tunnel construction in order to avoid accident happening.%介绍了通城-平江高速刘家湾隧道在偏压浅埋的复杂地质条件下施工过程中的现场监测的项目、手段及方法.基于监测结果分析了刘家湾隧道的出口段地表沉降、围岩接触应力以及隧道开挖爆破震动速度,获得了围岩的动态信息以指导施工,预防事故发生.
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