某地铁保护区自动化监测方案设计与监测数据分析

摘要

Rapid increase of urban metro caused the growth of deep foundation pit proj ect nearing the subway,which brings large deformation and displacement of metro structure,and lead to a seriousthreating for metro safety.The monitoring for metro structure with high frequency and high accuracy should be important.Otherwise,the traditional manual monitoring method could not meet the requirement of short cycle and timeliness for it,and automatic way with its providing for stable and reliable real-time dynamic monitoring data has becoming a trend of study nowadays.Taking a metro protective area automatic monitoring solution as an example,the monitoring solution design,construction and operation of the monitoring system, monitoring network layout is introduced.The influence of deep foundation pit excavation for metro could be reflected by monitoring data accuracy,and could verify the feasibility and reliability of the solution design,which ensure the structure and operation safety of metro effectively,and is suitable for application in similar proj ects.%随着城市地铁运营线路的快速增加，临近地铁的深大基坑项目也不断增多，这些基坑施工造成地铁产生较大的变形和位移，严重威胁地铁的安全，应对地铁进行高频率、高精度变形监测。传统的人工监测方法已不能满足地铁监测周期短、时效性强的要求，而自动化监测可实时提供稳定可靠的高精度动态监测数据，是目前的研究方向和趋势。据此，以某地铁保护区自动化监测方案为例，介绍了方案设计、监测系统的构成与运行、监测网布设等内容，监测数据准确反映了基坑开挖对地铁的影响规律，验证了该方案的可行可靠，有效保证了地铁的结构和运营安全，适宜在类似项目中推广应用。