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03 Excavation Support And Pre Grouting Of Tbm Driven …
One has poorquality rock ruptureswent partly through rock, concrete/rock contact polyesterglue. ninepull tests having strengthabove zero 2.1MPa Fig. 11. Finished section. Rockbolts: normaltype 25mm diameter fully grouted cementbased mortar. fewexceptions, totalnumber 4177pieces.