Fracture Stresses Induced by Rock Splitters
To complement field experimentation in the use of mechanical rock splitters for rapid excavation, an analysis of the stress distribution around a hole was made by means of the Airy stress function for two assumed pressure distributions. These were chosen to simulate the probable pressure distribution caused by a rock splitter, i.e. by two feathers separated by a hydraulically activated wedge. An induced stress factor of 1.0 was obtained for an even function p sin2 ?, and of 1.65 for a Fourier series function. Results show that the design of feathers is a critical factor in determining the magnitude dnd distribution of stresses.
D. D. Chollett et al., "Fracture Stresses Induced by Rock Splitters," International Journal of Rock Mechanics and Mining Sciences & Geomechanics Abstracts, Elsevier, Jan 1976.
The definitive version is available at http://dx.doi.org/10.1016/0148-9062(76)90559-3
Mining and Nuclear Engineering
Mechanical and Aerospace Engineering
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© 1976 Elsevier, All rights reserved.