Weibull曲线拟合模型在隧道监控数据处理中的应用

监控量测是隧道新奥法施工的三大要素之一,通过对监控数据的回归分析可以预测围岩的最终位移等,进而有效地指导隧道设计与施工。本文采用Weibull模型作为回归函数对隧道围岩变形实测数据进行了回归分析,并与其它几种常用回归函数进行了比较。结果表明:将Weibull模型作为回归函数,回归方程理论曲线与实测曲线的吻合度最高,误差范围更小,能够更加准确的反映隧道围岩变形量与时间之间的关系,这对于准确预测围岩变形量和确定二次衬砌的时间具有一定的参考价值。

The Application of Weibull Curve Fitting Model to the Data Analysis in the Tunnel Controlling

Monitoring measurement is one of the three elements that are used in New Austrian Tunneling Method,the ultimate displacement of the surrounding rockmass can be predicted by regression analysis on the monitoring data,which can provide effective guidance for the design and construction of tunnel.In this paper,the Weibull model is used in regressive analysis and the relationship between surrounding rock mass deformation and time has been found out.The result of comparison indicates that the data from Weibull model are more closely to the measured data than other regressive models.The paper can provide reference for the analysis of the monitoring results of tunnel works.