Stress Estimation from Borehole Breakout Data

Our UNSW researchers are leading the way in easy and reliable ways to estimate in-situ stress magnitudes from borehole breakout data. We are proud to work with partners in industry to improve current techniques at the most competitive cost.

Competitive advantage

  • A multidisciplinary research team comprising mining and civil engineering, geology, and computer science
  • Development of a reliable, automated and inexpensive technique for estimation of in-situ stress magnitudes
  • Overcoming the shortcomings of currently used stress measurement techniques
  • Enhancing the safety of underground mines and economic viability of operations

Recent research projects

  • The Australian Coal Industry’s Research Program (ACARP), starting in 2017 on Reliable Estimation of Horizontal Stress Magnitudes from Borehole Breakout Data
  • The Australian Coal Industry’s Research Program (ACARP), starting in 2020 on Reliable Estimation of Horizontal Stress Magnitudes from Borehole Breakout Data – Stage2, extension

Capabilities and facilities

  • Testing of borehole breakout behaviour under true triaxial stress conditions through UNSW Variable Confinement Cell developed for this project
  • Development of a novel machine learning model to estimate minimum horizontal stress magnitude through training and validating the model from laboratory and field data
  • Implementation of X-ray microcomputed tomography (CT) imaging technique to investigate borehole breakout propagation

Our partners

  • The Australian Coal Industry’s Research Program
  • Glencore Coal Assets Australia Pty Ltd
  • South32 Ltd
  • Maptek