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监控量测技术可用于预测隧道施工时的变形,保障施工过程的安全。对于分离式隧道,由于两洞施工进度的不同,先开挖洞与后开挖洞之间的相互影响非常复杂。本文对内蒙古隆胜隧道的监控量测数据进行分析,以施工进度为自变量,建立了多个回归模型,分别运用相关分析理论、灰色理论、误差分析理论,综合地从三个层次来对残差进行标准化研究,得到准确的回归模型,较好地优化了传统回归分析法在选择非线性回归模型时存在的缺陷。以地表沉降数据为例,得到符合其变形特点的双曲线函数模型,验证了该方法的可行性与优异性。通过对比两洞之间实时监控的数据,总结了本项目隧道施工时非同步开挖的变形特点,结果表明:对于非同步开挖分离式隧道,后开挖洞在开挖中受到影响较大,且两洞变形基本同时稳定等结论。
Monitoring and measuring technology can be used to predict the deformation of the tunnel construction, to ensure the safety of the construction process. For separate tunnels, the interaction between the first and second excavation tunnels is very complicated due to the different construction schedules of the two tunnels. This paper analyzes the monitoring measurement data of Longsheng Tunnel in Inner Mongolia. Based on the construction progress as the independent variable, a number of regression models are established. By using the relative analysis theory, the gray theory and the error analysis theory respectively, Poor standardization study, get an accurate regression model, better optimize the traditional regression analysis of the shortcomings of the nonlinear regression model selection. Taking the data of surface subsidence as an example, the hyperbolic function model which accords with its deformation characteristics is obtained, which verifies the feasibility and the superiority of this method. By comparing the real-time monitoring data between the two holes, the deformation characteristics of the unsynchronized excavation during tunneling are summarized. The results show that the post-excavation is greatly affected by the excavation of the unshared and isolated tunnel , And the deformation of the two holes basically stable at the same time.