隧道变形自动化监测系统与工程应用

Automated Monitoring System for Tunnel Deformation and Its Engineering Application

摘要:

隧道变形是评价隧道围岩及支护结构安全状态最直接、最客观的指标，受隧道开挖及支护应力状态转化及施工时空效应影响，隧道变形往往呈现出复杂的特性，研发可反映隧道变形真实形态，兼具安全、可靠、便捷、经济的监测方法与技术对保障隧道修建安全具有重要现实意义。在梳理和分析隧道变形监测技术现状基础上，以隧道变形自动化监测系统为重点，阐述了监测系统的工作原理、监测系统核心关键技术、监测系统平台功能等内容，并通过我国西部某典型隧道现场应用与对比验证，表明监测系统变形测试结果与全站仪技术测试结果吻合度良好、精度可靠，而在变形监测的时空连续性方面则更具优势。

Abstract:

Tunnel deformation is the most direct and objective indicator for evaluating the safety status of tunnel surrounding rock and support structures. Affected by the stress state transformation of tunnel excavation and support as well as the spatio-temporal effect of construction, the tunnel deformation often presents complex characteristics. The research and development can reflect the true form of tunnel deformation. The monitoring methods and technologies that are safe, reliable, convenient and economical have significant practical significance for ensuring the safety of tunnel construction. Based on the review and analysis of the current status of tunnel deformation monitoring technology, focusing on the automatic monitoring system for tunnel deformation, the working principle, core key technologies and platform functions of the monitoring system are set forth. Through the field application and comparative verification of a typical tunnel in western China, it is shown that the deformation test results of the monitoring system are in good agreement with the total station technology test results with reliable accuracy, and have more advantages in the spatiotemporal continuity of deformation monitoring.