Stochastic and Centrifuge Modelling of Jointed Rock. Volume 1. Fracturing of Fractured Rock
Final rept. Jun 1987-May 1990
MASSACHUSETTS INST OF TECH CAMBRIDGE DEPT OF CIVIL ENGINEERING
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Rock mass failure can occur through the propagation of cracks emanating from and causing coalescence of pre-existing fractures. The objective of this research was to develop a mechanical model for fracture coalescence which can be used in conjunction with numerical methods to simulate rock mass failure. The study consisted of 1 Monitoring growth in uniaxially compressed gypsum specimens with pre-existing fractures with various arrangements. Consistent coalescence behavior as a function of preexisting fracture geometry was noted and is documented 2 Development of an analytical coalescence model based on correlations between computed stressstrain fields and observed fracturing in the experiments. Using this analytical model, satisfactory agreement was achieved between simulated and experimental coalescence behavior as a function of pre-existing fracture geometry.
- Geology, Geochemistry and Mineralogy