In underground works, geology affects every major decision. Any underground infrastructure will need excavation and ulterior support of the soil or rock mass where the infrastructure is to be built.
The excavatability of the ground and the need of support will vary depending on the geology.
The reason is geological aspects are normally linked to the geomechanical properties of the ground (which rule its deformability and strength) and their possibility to be excavated.
So, geology will determine main aspects of the infrastructure as:
• Location and alignment
• Constructability & Cost
• Usefulness and behavior of the completed structure
• Risk Analysis
So generally s Geotechnical Baseline Report will be put together , which will form the basis for the procurement of certain specialized equipment for the underground works.