Reply on topic: 4 Bengaluru Metro Tunnel Boring Machines remain inactive awaiting Chinese experts
https://www.newindianexpress.com/cities/bengaluru/2020/jun/18/metro-tbms-wait-for-chinese-drill-experts-2158040.htmlReply on topic: World's Longest Railway Tunnel: Brenner Base Tunnel between Italy and Austria
Isn't it amazing? They are using the third tunnel as the "probe drill" during the boring.Da Nhim Water tunnel project in Việt Nam completed ahead of schedule
Inspection approve 4,908.57 metre water tunnel. It is in...nnel construction is partial TBM boring and partial blast method. On March 23, 2019 at...as to tunnel rest of tunnel 929.05 metre with blast method and not TBM method....Reply on topic: Sandvik DT 821-SC boom electro-hydraulic jumbo is for sale in Bulgaria
spec: https://www.rocktechnology.sandvik/en/download-center/technical-specifications/underground-drill-rigs-and-bolters/dt821-sc-technical-specification/
cover tunnel photo by: Matt Brown from London, England / CC BY
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