Abstract
Various research works on rock mass classification using mechanical parameters obtained during TBM excavation has been achieved. The authors conducted a survey of the mechanical parameters on which experienced TBM operators relied most at TBM operation. Selecting the mechanical parameters based on the survey results in conjunction with TBM vibration and muck height on the muck transfer conveyor, we built a fuzzy model and developed a real-time rock mass classification system to yield rock conditions and support requirements ahead of the tunnel face. The authors applied the system on a 5m diameter TBM tunnel. 88 percent of the system output agreed with the evaluation by geologist.
