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Rock Mechanics and Rock Engineering

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01.11.2013 | Original Paper

A Fractal-Based Model for Fracture Deformation Under Shearing and Compression

verfasst von: Ming-Yao Wei, Hui-Hai Liu, Lian-Chong Li, En-Yuan Wang

Erschienen in: Rock Mechanics and Rock Engineering | Ausgabe 6/2013

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Abstract

This study presents an improved model for calculating mechanical deformation of individual fractures subject to shearing and compression processes. Considering that the fracture-surface roughness can be characterized by fractals, a relationship between asperity angle and size of a fracture with fractal surfaces is derived. In addition, plastic work is employed to account for the effects of fracture-asperity degradation during the shearing process. Based on these developments, a scale-dependent relationship between shear stress and displacement is proposed, and also a formulation to calculate fracture aperture during shearing and compression processes is developed, by relating normal displacement to shear displacement for fractal surfaces. The usefulness of this model is demonstrated by agreements between calculated results and observations from laboratory experiments under different test conditions.

Vorheriger Artikel A Constitutive Model for Shear Behavior of Rock Joints Based on Three-Dimensional Quantification of Joint Roughness

Nächster Artikel Application of an Expert System to Predict Maximum Explosive Charge Used Per Delay in Surface Mining

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Titel: A Fractal-Based Model for Fracture Deformation Under Shearing and Compression
verfasst von: Ming-Yao Wei
Hui-Hai Liu
Lian-Chong Li
En-Yuan Wang
Publikationsdatum: 01.11.2013
Verlag: Springer Vienna
Erschienen in: Rock Mechanics and Rock Engineering / Ausgabe 6/2013
Print ISSN: 0723-2632
Elektronische ISSN: 1434-453X
DOI: https://doi.org/10.1007/s00603-013-0367-x

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