In the current process of subway shield tunnel excavation,in order to enable the shield machine to excavate according to the designed tunnel axis and achieve tunnel penetration according to the design requirements,it is necessary to carefully study and formulate measurement plans and methods,estimate and analyze the causes of measurement errors and tunnel penetration accuracy,calculate the maximum deviation value that may occur during penetration,select scientifically feasible measurement plans and methods,and ensure the accuracy of tunnel penetration.This paper takes the right line of the Mu Gao shield section of Chengdu Metro Line 19 as an example to analyze the estimation of tunnel penetration errors.
维普
万方数据