Measuring the elastic modulus of in-situ rock masses over scales of tens of meters remains an important challenge in experimental rock mechanics. We present a new approach using ambient resonance measurements of freestanding rock masses to identify vibrational modes, which are then matched with numerical models implementing bulk, globally representative material properties. The result is an exp...

The size effect has a significant on the mechanical behavior of rock, thereby fundamentally influencing stability rock excavations. main challenge associated with experimental research fractured mass lies in difficulty specimen preparation to represent influence and fracture material. In order preliminarily explore feasibility 3D printing technology field mechanics, specimens different sizes ch...