监控量测技术在京珠高速公路粤北段某隧道中的应用

Application of Monitoring and Measurement Technology in A Tunnel of the Northern Section of Beijing-Zhuhai Expressway in Guangdong Province

监控量测是隧道新奥法施工的三大要素之一,通过量测施工中隧道围岩变形与支护受力数据,对数据进行分析整理并及时反馈指导施工。以京珠高速公路粤北段某隧道为例,对该隧道的拱顶与地表进行了监控量测,通过对拱顶下沉和地表沉降等量测数据的测定、处理、回归分析,客观有效地评价和预测了该隧道的稳定性。

Monitoring and measurement is one of the three major elements of tunnel construction for the New Austrian Tunneling Method. Through measuring and analyzing the data of the tunnel surrounding rock deformation and support during construction,feedback and guidance for construction could be provided. In this paper,taking a tunnel in the north section of Jingzhu Expressway as an example to monitor and measure the vault and the surface of the tunnel,through the measurement,processing and regression analysis of the data such as the crown subsidence and surface subsidence,the stability of the tunnel was evaluated and predicted objectively and effectively.