Application feasibility study of evaluation technology for long-term rock behavior, 2; Parameter setting of variable compliance type model and application feasibility study for rock behavior evaluation

Sato, Shin*; Noda, Masaru*; Niunoya, Sumio*; Hata, Koji*; Matsui, Hiroya ; Mikake, Shinichiro 

Creep phenomenon is one of the long-term rock behaviors. Variable compliance type mode is a representation of the phenomenon. In many of rock-creep studies, model and parameter have been verified in 2D analysis using model parameter acquired by uniaxial compression test etc considering rock types. Therefore, in this study model parameter was set by uniaxial compression test with classified rock samples which was taken from pilot boring when the main shaft was constructed. Then, comparison between measured value and 3D excavation analysis with identified parameter was made. By and large, the study showed that validity of identification methodology of parameter to identify reproduction of measured value and analysis method.