Slope Stability Design
Underground Excavation
Foundation and Soft Ground Design
Underground Safety Assessment
Underground Safety Investigation After Construction Begins
Consultation on Adjacent Construction of Structures
Road Tunnel
Railway Tunnel
Underground Development Such As Electric Power and Communication Tunnels
Ground Subsidence
Wide-Area Groundwater Impact Review
Seismic Analysis Considering Ground Structure Interaction
Underground safety assessment | Small-scale underground safety evaluation | Underground safety investigation after construction begins | |
Project | Tunnel construction and excavation depth of 20m or more | Excavation depth of 10m or more and less than 20m | Projects subject to underground safety evaluation (except small scale) |
Timing | Before business plan approval of approval | Start of construction ~ completion of construction | |
Main Goal | Ground Safety Review and Underground Safety Securing Plan Establishment | Investigation of implementation of underground safety security measures |