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| | Abstract | | The ground evaluation technique using core evaluation point is one of the ground evaluation technique of mountain tunnel. In this technique, the improvement of the precision (uncertainty) of ground evaluation is expected by the reduction of variability in relations with seismic velocity and core evaluation point. Core evaluation point is evaluated in the stress release state. And seismic velocity is properties under overburden state. Therefore, it is expected that the variability can be lowered by correcting the influence of overburden. Actually, the variability can be lowered by the correcting. However, there were few reduction effects in the uncertainty of ground evaluation by the correcting. It was shown that it was not enough by the reduction of partial uncertainty to reduce uncertainty of the whole ground evaluation. |
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