摘要
通过对G318线高尔寺隧道围岩变形监测,获得了拱顶沉降和边墙收敛准确数据.利用最小二乘法回归分析方法对监测成果数据进行拟合处理,并对其精度进行分析研究.根据回归拟合方程表明隧道围岩开挖后的一段时间内,其变形位移随开挖时间出现非线性的变化规律,最终趋于稳定值,此与实际监测结果一致.研究结论对隧道围岩开挖施工以及支护时间的选择具有重要指导意义.
Based on the monitoring of the Gao＇ ersi Tunnel surrounding rock deformation of G318, the accurate data of vault crown settlement and sidewall constringency is obtained. By using the method of least squares regression analysis, this paper carries out the fitting processing for the monitoring outcome data, and analyzes its precision. The regression fitting equation illustrates that during a certain period of time when the tunnel surrounding rock is excavated, its deformation displacement shows a nonlinear variation with the passage of the time, but finally it will approach a stable value and will match the actual monitoring results. Therefore, the research results are of great guiding significance towards the excavation of the tunnel surrounding rock as well as towards the choosing of the supporting time.
出处
《成都大学学报（自然科学版）》
2015年第3期310-313,共4页
Journal of Chengdu University（Natural Science Edition）
关键词
隧道围岩
回归分析
精度
拟合
非线性
tunnel surrounding rock
regression analysis
precision
fitting
nonlinear
