This lesson learnt report from Kidston pumped storage hydro project highlights their lessons learnt from excavation of shafts during their project. In this project, four shafts were excavated bottom up using raise bore technique.
Report extract
The project requires the following four shafts to be excavated:
- Ventilation Shaft – 4.1m diameter (excavated), 243m deep
- Cable Shaft – 4.1m diameter (excavated); 252m deep
- Intake Shafts x 2 – 5m diameter (excavated); 244m deep
