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Based on the traditional theory of fracture, time dependence of rock fracture is taken into account and the creep fracture criteria are given. The effect of the microcrack zone on fracture toughness is analyzed. Finally, a model for time prediction of rheological fracture is derived and its feasibility is proven.
Based on the traditional theory of fracture, time dependence of rock fracture is taken into account and the creep fracture criteria are given. Finally, a model for time prediction of rheological fracture is derived and its feasibility is proven.