摘要
地表沉降是浅埋暗挖法隧道施工引起的主要变形。各种监控量测手段已经普遍应用到隧道施工管理过程中,如何很好地利用测得的变形数据去反馈施工和设计,是非常值得探讨的课题之一。文章根据南京地铁2号线隧道浅埋暗挖区间段实测数据的统计分析结果,得出最大地表下沉速率和最大下沉速率时的地表下沉量与变形稳定时的沉降量和隧道施工的主要纵向影响范围均具有线性关系的结论,线性系数与影响沉降变形的诸多因素有关,可通过具体工程实测数据回归得到。
Ground surface subsidence is main deformation induced by shallow tunnel construction. Various Supervisory Control and Data Acquisition methods have been widely applied in the tunnel construction process, it is worthy to explore how to make good use of the obtained deformation data and how to feedback them to the construction and design. The data of deformation measured from shallow tunnels of Nanjing metro NO.2 were treated by the way of regression analysis, correlation analysis. The following conclusions are thus made： Both the maximum deformation rate and the value of settlement at maximum deformation rate are linear with the value of total vertical displacements and the main construction influenced range. And the linear coefficient connects with various factors effecting the vertical displacements, which can be obtained by the way of regression analysis, correlation analysis in actual project.
出处
《江苏建筑》
2009年第5期38-41,86,共5页
Jiangsu Construction
关键词
浅埋暗挖
沉降变形
回归分析
相关分析
监控量测
shallow tunnel undercut by mining method
ground surface settlement
regression analysis
correlation analysis
