Dynamic behaviours of geomaterials in underground infrastructures

Geomaterials (e.g. cement, concrete and rock) are easily damaged and collapsed in underground infrastructures and during earth resource extraction where extreme loading conditions (like earthquakes, rockbursts, and explosion) and complicated stress states are frequently encountered. A comprehensive investigation of dynamic behaviours (including mechanical, fracturing and deformation properties) of geomaterials can help understand their failure mechanisms and predict the failure process in such scenarios. The obtained knowledge can be further used for warning and protection in advance during mining and infrastructure constructions