stress-driven

Geohazard information for the masses

Category: Static and cyclic load compression tests under controlled climatic conditions

Just add water: How to break large rock beams with a few drips

(*pun intended) The failure of natural rock slopes, or engineered bedrock structures (e.g. tunnels, caverns, mines, and excavations) is closely tied to the progressive fracturing of intact rock. The physics of this process is, however, complicated – and even in engineered materials such as glass and steel, the interaction of conditions driving the propagation of cracks is […]

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Research project: Static and cyclic load compression tests under controlled climatic conditions

Matthew A PerrasSimon LoewKerry Leith We aim to advance the frontier of progressive rock failure combining laboratory data derived from new custom built creep testing machines (capable of regulating temperature, humidity, and mechanical load over at least 100 days) with measurements from existing field equipment. Initial testing will be focused on unique natural and man-made […]

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A revised compilation of in situ stress measurements indicates maximum differential stress magnitudes are limited by micro crack initiation.

Leith, K., Moore, J.R., Amann, F., Loew, S., 2014. In situ stress control on micro-crack generation and macroscopic extensional fracture in exhuming bedrock. J. Geophys. Res. 119, 594–615.

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