铁道标准设计2024，Vol.68Issue(6)：121-128,8.DOI:10.13238/j.issn.1004-2954.202210090004
基于回归正交试验的高地应力TBM隧道变形影响因素敏感性研究
Study on Influencing Factors of Surrounding Rock Deformation of TBM Tunnel With High Ground Stress Based on Regression Orthogonal Test
摘要
Abstract
This paper,based on a national key railway project crossing the high ground stress TBM construction section,studies the test results by means of the combination of refining three-dimensional numerical simulation and regression orthogonal design experiment and multiple linear regression method.The sensitivities of different supporting factors are studied,their advantages and disadvantages in controlling surrounding rock deformation are identified.At the same time,multiple linear regression equation of the experiment is obtained,which provides a fast calculation formula for structural optimization,so as to adjust the support parameters and optimizing the structure.In linear regression orthogonal experiment,the length of short anchor bolt,the length of long anchor bolt,the longitudinal spacing of steel arch,the circumferential and longitudinal spacing of anchor bolt,and the shotcrete grade and ground stress level are selected as the influencing factors.Regression orthogonal design experiment with L8(27)orthogonal table is conducted without considering interaction effect.The constant term and coefficients of partial regression term are calculated,and the multiple linear regression equation is established,and the results are analyzed in terms of variance and testing lose effectiveness of fit.The results show that the F value of ground stress is greater than F0.001,and the ground stress has a decisive influence on the deformation of the surrounding rock.The F values of the length of short anchor bolt,the longitudinal spacing of the anchor bolt and steel arch are all greater than F0.025,which have a significant impact on controlling the deformation of the surrounding rock.The established regression equation is significant,the test of misfit is not significant,so the regression equation has a good degree of fitting.Therefore,measures should be taken to release ground stress in design and construction first,and then the length of short anchor bolt,the spacing of steel arch and the longitudinal spacing of anchor bolt should be taken into account when selecting support parameters.关键词
高地应力隧道/回归正交试验/三维数值分析/多元一次回归方程/敏感性研究/多重联合支护/失拟性检验Key words
high ground stress tunnel/regression orthogonal experiment/three-dimensional numerical simulation/multiple linear regression equation/sensitivity study/multiple combined support/testing lose effectiveness of fit分类
交通工程引用本文复制引用
任道远,高新强,马泽骋,樊浩博,朱正国..基于回归正交试验的高地应力TBM隧道变形影响因素敏感性研究[J].铁道标准设计,2024,68(6):121-128,8.基金项目
中国铁建股份有限公司科技重大专项(2019-A05) （2019-A05）
石家庄铁道大学研究生创新资助项目(YC2022017) （YC2022017）
