Simulation of the fracture shear dilation

Sergei Fomin; Ayumu Shimizu; K. Matsuki; K. Sakaguchi; Toshiyuki Hashida

doi:10.1117/12.517978

10 October 2003 Simulation of the fracture shear dilation

Sergei Fomin, Ayumu Shimizu, K. Matsuki, K. Sakaguchi, Toshiyuki Hashida

Proceedings Volume 5127, Sixth International Workshop on Nondestructive Testing and Computer Simulations in Science and Engineering; (2003) https://doi.org/10.1117/12.517978
Event: Sixth International Workshop on Nondestructive Testing and Computer Simulations in Science and Engineering, 2002, St. Petersburg, Russian Federation

Abstract

The cahnges of the stress regime in the natural rocks often cause the fracture shear displacements, which lead (due to fracture surface roughness) to fracture dilation. The simple approach for simulating this natural process is proposed. The method incorporates the experimental measuring of the real fracture surface topography, mathematical modeling of the synthetic fracture lateral slipping (shear dilation). Mathematical model is based on the spectral synthesis method and accounts for the fractal nature of the fracture surfaces. It is shown that the topography of the lengthy fracture surface in the natural rocks can be properly characterized with the data obtained from the small fragments of these surfaces. The algorithm for computing and predicting the fracture dilation and shear dilation angles in the natural rocks as functions of shear offset is proposed.

Citation Download Citation

Sergei Fomin, Ayumu Shimizu, K. Matsuki, K. Sakaguchi, and Toshiyuki Hashida "Simulation of the fracture shear dilation", Proc. SPIE 5127, Sixth International Workshop on Nondestructive Testing and Computer Simulations in Science and Engineering, (10 October 2003); https://doi.org/10.1117/12.517978

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