特大断面隧道远程自动监测方案的研究

Study on remote automatic monitoring system for a super-large-section tunnel

文章介绍了特大断面隧道——广州龙头山隧道的远程自动监测系统。该系统由本地子系统和远程监测子系统构成,其中本地测量子系统实现了对拱顶沉降、锚杆应力、二次衬砌钢筋应力和二次衬砌混凝土应变四个方面的远程自动监测;无线传输子系统采用基于Web(Internet)及GSM中GPRS的无线远程数据传输方式,实现了对隧道监测数据的远程无线传输。根据7个月监测可知,龙头山隧道使用正常,各部分结构处于安全状态。为评价特大断面隧道结构的长期安全性,还需要在今后的运营阶段做更长时间的监测及提供更多的数据支持。

This paper introduces a remote automatic monitoring system for a super - large - section tunnel, Longtoushan tunnel. The automatic monitoring system is composed of a local subsystem and a remote system. The local monitoring subsystem automatically monitors arch crown settlements, axial forces in anchor bolts, stresses in reinforcing bars and strains in concrete of secondary lining. Wireless transmission subsystem transmits monitoring data through Web and GPRS approach. 7 months＇ monitoring data indicate Longtoushan tunnel is in safe condition. In order to evaluate long - term security of the super - large - section tunnel, more long - term monitoring and more data are needed.