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Keywords: road surfaceClose
Paper presented at the ISRM International Symposium, November 19–24, 2000
Paper Number: ISRM-IS-2000-171
... under compressed air at a depth to the crown of about 18m. Emergency grouting was conducted from tunnel level and the road surface after the road surface had subsided over 400mm. Over 130m3 of grout was introduced to stabilise the area. Downhole seismic testing and STI were used to assess the disturbed...
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