樊屯隧道施工监控测量及数据模拟分析

隧道的施工监控测量对保证工程质量与安全具有重要意义。在建兴高速樊屯隧道施工过程中,对地表沉降、拱顶下沉、围岩收敛等进行了监控测量。介绍了樊屯隧道施工监控测量的内容与方法,并对监测数据进行了模拟分析。结果表明,隧道的地表沉降、拱顶下沉、围岩收敛在隧道施工后的15 d 里变形迅速,在随后一个月逐渐趋于稳定;对观测数据所建立的回归分析模型具有较大的判定系数 R2,模型具有较好的稳定性与预测能力。

The Monitoring and Digital Simulation Analysis of Fantun Tunnel Construction

The monitoring and measurement of tunnel construction is of great significance in ensu-ring the engineering quality and safety.The ground surface settlement,crown settlement,convergence of surrounding rock,etc,are monitored and measured during the Fantun tunnel construction of Jianxing Highway.This paper introduces the content and method of the monitoring and measurement of Fantun tunnel construction and makes a simulation analysis for the monitoring data.The results show that the ground surface settlement,crown settlement and convergence of surrounding rock are deformed rapidly in 15 days after the tunnel construction and gradually come to stability in the following 30 days;the regres-sion analysis model,which is established on the basis of observation data,has a larger R2 （the coefficient of determination）,and this model has good stability and predictive ability.