Effects of mechanical properties of ground on the support characteristic curve and final support reaction

Abstract

Sequential excavation analysis was conducted to identify the effects of mechanical properties of ground on the support characteristic curve and final support reaction.
As a result, it was found that the final support reaction was nearlythe same in elastic and elastoplastic models where the shotcrete after application had high stiffness but that there was great difference in final support reaction between the two models where the shotcrete had small stiffness as the groundwas deformed substantially near the tunnel face in the elastoplastic ground.