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Äspö Hard Rock Laboratory - SkbBlasting or drilling tunnels The tunnels at Äspö Hard Rock Laboratory are excavated using both drill and blast technique and tunnel boring. Tunnel
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12 Tunnels in weak rock - Strona główna AGHhome.agh.edu.pl/~cala/hoek/Chapter12.pdf · Tunnels in weak rock 12.1 Introduction Tunnelling in weak rock presents some special challenges
Management of geotechnical risks for some tunnels … D. (2008) Management of geotechnical risks for some tunnels in the Wellington Region Opus has provided risk management advice
SRC rock mass classification of tunnels under high tectonic ......Guidelines for excavation and support of lO-m-span rock tunnels according to the RMR Systema Rock mass class Excavation
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Pregrouting for Tunnels in Rock - The Case for New Thinkin.