Dr. Jia Liu
Postdoctoral Fellow
UNSW Sydney
My research interests span both civil and mining engineering, with a focus on geomechanics to improve the safety and sustainability of deep underground excavations. I work on the failure of rock and rockmass across multiple scales and under different loading conditions, with the aim of improving the understanding of rock failure mechanisms and supporting better design and geotechnical risk management in practice. I received my M.E. in Civil Engineering (2019) and Ph.D. in Mining Geomechanics (2025) from UNSW Sydney, which provides a strong academic foundation in both civil and mining disciplines. This is complemented by industrial experience in geotechnical engineering and project management, including a year-long corporate professional development program in Australia. Together, these experiences enable me to connect fundamental research with engineering applications and to work effectively with industry partners on complex geotechnical problems.
Methodologically, my research combines microscopic analysis, laboratory experiments, numerical modelling and energy-based assessment to build a comprehensive, multi-scale view of brittle failure processes. During my PhD, I developed numerical algorithms and modelling strategies that improved the understanding of rock and rockmass failure mechanisms under both quasi-static and dynamic loading, linking microstructural features and fracture evolution to macroscopic behaviour in high-stress environments. The research was supported by Cooperative Research Centres Projects (CRC-P) grants, the University Postgraduate Award (UPA) and our industry partner (Jennmar). My current postdoctoral research extends this foundation towards applied geotechnical risk assessment, focusing on the design and performance of ground support systems in deep underground conditions, with an emphasis on quantifying the energy demand required for support design under complex conditions such as burst-prone areas.