Rock fracture mechanics and its applications in rock engineering - Mikael Rinne

Rock fracture mechanics - and its applications in rock engineering
Mikael Rinne
Associate Professor
Department of Civil Engineering
School of Engineering
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Copyrights, picture credits:
Fig. 1) Template by Aalto University
Fig. 2) Natural Rock Slope. Meiko Kirkkonummi, Finland, Mikael Rinne 2020
Fig. 3) Hand ax. Photo Bryan Meltz, Emory Photo. Parking slot entrance under construction
Tapiola Espoo, Finland. Mikael Rinne 2011
Fig. 4) Fracture instability and failure. Photos Licensed under Shuttlestock
Fig. 5) Water & fractures; Rinne 2020. Geothermal energy; St1 Deepheat
Nuclear waste repository; Posiva Oy
Fig. 6) Fracture initiation and propagation model. Mikael Rinne, Lic. Thesis 2000
Fig. 7) Time dependent failure model. Mikael Rinne, Doc. Thesis 2008
Fig. 8) Nuclear Waste disposal; Posiva Oy. Pyhäsalmi Mine; First Quantum Minerals. Energy storage;
Mateus Janiszewski, Doc. Thesis 2019.
Fig 9.) Photogrammetry and Virtual Reality figures by Lauri Uotinen and Mateusz Janiszewski.

[@fytubevw]

Ultrasonic ice wedge for snowcats, to get rid of the quite heavy layer on top of roads. Uhka vai mahdollisuus? (Threat or possibility?) :) Good speech! Fracture mechanics plays such pivotal role in all around the world. Thanks!

[@geoffgeoff143]

But what determines the direction of propogation? Some go straight and flat. Others curved or concoidal. Yet others rogh and undulation like concrete. If I hit a floor tile in the centre with a hammer, the cracks dont propagate in a straight line towards the closes edge. What controls this?