Safety Evaluation of Rock Deformation During TBM Excavation in Hydraulic Engineering Based on Three-dimensional Numerical Analysis
A safety evaluation method for surrounding rock deformation based on three-dimensional numerical analysis is proposed for tunnel excavation using open TBM in hydraulic engineering.This method comprehensively considers the deformation of the surrounding rock in three stages:the front of the tunnel face,the TBM shield interval,and after the shield is released,and quantitatively evaluates it by introducing the rock deformation safety degree(F_disp).This paper demonstrates the application of this method in hydraulic engineering through specific cases,as well as the impact of different support schemes on the safety of surrounding rock deformation.
three dimensional numerical analysiswater conservancy engineeringTBM
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