Fig.8-15　Estimated water inflow depending on the pre-excavation grouting in the −500 m Access/Research Gallery-South

Fig.8-15 Estimated water inflow depending on the pre-excavation grouting in the −500 m Access/Research Gallery-South

Fig.8-15　Estimated water inflow depending on the pre-excavation grouting in the −500 m Access/Research Gallery-South

The water inflow measured in the 16 m section decreased sufficiently from 960.5 (estimated water inflow) to 35.3 ℓ/min (4%).

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