ABSTRACT
Snowy 2.0 is a major hydro power project currently under construction in Australia, it includes two large caverns excavated at about 720 m depth in high in-situ stresses and fair to good rock mass. During the caverns excavation, the Observational Method is being implemented in combination with the monitoring of rock mass behaviour, to either confirm or adjust the design at different stages the works, by comparing the predicted and observed response to caverns excavation.
As part of the observational method, a “Digital Twin Model” has thus been developed to anticipate the rock mass behaviour during the excavation and to fulfil the verification of the acceptance criteria of the rock support in terms of durability and integrity.
This article presents the conception and the development of the “Digital Twin Model” of the PSC.
