芙蓉山公路隧道地表沉降监测技术及应用

Application of Monitoring Technology for Ground Surface Settlement in Furongshan Tunnel

针对芙蓉山隧道具有浅埋、大跨度的特点,通过大量的地表沉降现场监测,绘出其全过程曲线以及各测点变形量随时间变化曲线,验证了地表控制隧道洞口稳定性的重要性;并通过对不同变化曲线进行分析,对隧道洞体的稳定性进行预判,指导施工。

According to such the characteristics as shallow embedment and large span of Furongshan tunnel and through a large number of monitors for the ground surface settlement, its entire process curves and the deformation curves changed with time at the measured points are drawn out. The importance of the ground surface in controlling the stability of the tunnel entrance is verified. And through the analysis of different curves, the stability of the tunnel body is pre-judged in order to guide the construction.