Small-diameter vertical shafts constructed in the shallow space of

Design and Construction Innovations for the Pawtucket Project — TBM: Tunnel Business Magazine

Surrogate-based optimization design for surface texture of helical pair in helical hydraulic rotary actuator

Takashi HARA, Professor, Doctor of Engineering

Mountains of injustice: Social and environmental justice in Appalachia

Drilled Shaft Construction- Part 1

Takashi HARA, Professor, Doctor of Engineering

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

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

Takashi HARA, Professor, Doctor of Engineering

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

Frontiers Risk analysis and countermeasures of TBM tunnelling over the operational tunnel

Sinking unit in St. Petersburg.

Shaft Sinking

Synchronized jack system with three jacks.