Proposed vertical shaft excavation.

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Uttarakhand Tunnel Collapse: Two New Tunnels And A Vertical Shaft: New Plan To Rescue Trapped Workers

Takashi HARA, Professor, Doctor of Engineering, University of Toyama, Toyama, U Toyama, Civil Design and Engineering

Vertical Development

Proposed vertical shaft excavation.

Frontiers A Case Study of Deep Shaft and Open Face Tunnelling Induced Excessive Ground Settlement in Water Rich Strata in Guangzhou, China

Atsushi Yashima's research works Gifu University, Gifu-shi (Gidai) and other places

Shaft Excavation - Midwest Mole

Sirius sets world record with vertical shaft sinking machine - GeoDrillingInternational

Cooling Prize paper: Ground movement due to shaft construction

Design optimisation and challenges with the deepest shaft on HS2 - HS2 Learning Legacy

Deep Excavation Support Systems Speed Plant Construction

Shaft sinking - Wikipedia

Small-diameter vertical shafts constructed in the shallow space of steep mountainous areas - ScienceDirect