有理函数在隧道监测数据回归分析中的应用

Application of Rational Function Model to the Date Regression Analysis of the Tunnel Controlling

目前隧道施工均以新奥法为基础,其重要的一个特征就是在隧道施工过程中进行隧道围岩变形的量测,根据量测数据确定二次砌衬的施工时间,但是由于观测值有较大的离散性,因此必须经数学处理后才能使用,本文以某工程为例,采用有理函数模型对观测数据进行回归分析,可用有关回归曲线预测该断面的沉降值,并与规范推荐的回归函数进行了对比分析,结果表明,有理函数模型与实测数据较为吻合,误差较小,从而保证了工程质量和施工的安全性。

Inseparably connected with the new Austrian tunnelling method （ NATM ）, a basic feature of the modern tunnel construction is the surrounding rock mass deformation measurement with a sophisticated measuring programme. The time for the construction of secondary lining is determined by the measured data. However, the data from observation are often scattering so they must be through regression analysis before predicting the tunnel deformation. In this paper, the Rational Function model （RFM） is used in regressive analysis and the relationship between surrounding rock mass deformation and time has been found out. The result shows that the data from RFM are closely identical to the measured data, based on these data the quality of the project and the safety of the construction can be ensured.