OB31 & South Flank: uncertainty analysis

We were commissioned to calibrate an existing groundwater model to predict groundwater impacts associated with the OB31 project. We calibrated the model using singular value decomposition and shuffled-complex evolution techniques to derive the best possible calibration statistics.  A non-linear uncertainty analysis was undertaken using GLUE, DREAM, and null-space Monte Carlo methods.

In addition, we were commissioned to develop a simplified ‘child’ model from a complex regional ‘parent’ model to assess potential groundwater impacts associated with the South Flank Project. We calibrated the model using PEST and performed a linear predictive analysis to determine which parameters and observations were reducing the uncertainty of groundwater drawdown and pit dewatering rates.

A non-linear GLUE uncertainty analysis was performed to assess the complex parameter interactions expected at upper and lower values for the aquifer and recharge parameters.

Project

OB31 & South Flank: uncertainty analysis

Sector

Mining

Services

Groundwater modelling

View all hydrogeological & environmental services

Our team’s expertise is in groundwater modelling, field services, approvals and licensing, water supply, contaminant investigation, expert advisory, and hydrogeochemistry. Learn more about our services by clicking the link below.