To enhance the treatment effects for structural diseases in the loess tunnel,focusing on an operating tunnel in Shanxi,the numerical calculation software midas was used to simulate and calculate the stress characteristics of the treatment scheme,and the most economical and effective treatment measure was obtained through the comparative analysis.The results showed that the method of treating the lining cracking with reinforced drainage and localized arch replacement could effectively control the deformation of the surrounding rocks.Adopting the comprehensive treatment for pavement cracks by adding flat arches and additional micro steel piles at the bottom of the tunnel could further improve the stability of surrounding rocks and lining structures.
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