Changchang Li1, Zuguo Mo2, Haibo Jiang1,*, Fengchun Yang1
FDMP-Fluid Dynamics & Materials Processing, Vol.18, No.1, pp. 29-39, 2022, DOI:10.32604/fdmp.2022.017947
Abstract On-site monitoring and numerical simulation have been combined to analyze the stability of the jointed surrounding rock and the stress inside the lining structure of a sample deeply buried hydraulic tunnel. We show that the deformation around the tunnel was mainly concentrated in the range 51.37 mm∼66.73 mm, the tunnel circumference was dominated by shear failure, and the maximum plastic zone was about 3.90 m. When the shotcrete treatment was performed immediately after the excavation, the deformation of the surrounding rock was reduced by 58.94%∼76.31%, and the extension of the plastic zone was relatively limited, thereby leading to improvements in terms… More >
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