Classification type name |
Description |
Excavation behavior |
Classification for description of the excavate area during excavation and after excavation. |
Excavation type |
Classification for describing how a round in a tunnel was excavated, e.g. drill&blast, excavator etc. |
Geological tendency |
Classification for describing the overall geological tendency related to the construction works in a tunnel. |
Classification for describing the reason of an overbreak. |
|
Classification for estimation of the volume of an overbreak. |
|
Profile accuracy |
Classification for description how accurate the effective excavated area fits the planned excavation area. |
Reinforcement class |
Classification for that describes what measures were taken or are to be taken during the construction of a tunnel to prevent a tunnel from collapsing. |
Spanwidth |
Classifies the spanwidth of the excavated area |
TBM status |
Status of a TBM |
Water difficulty class |
Classification used for describing the difficulties induced by water afflux in the tunnel. Often used for contractual matter. |
Table 1: Classification types
