On the characteristics of rheological fracture of rock |
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| Authors: | You-liang Chen Ai-fang Qin Xiao-jie Jin |
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| Abstract: | 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.
Supported by the National Natural Science Foundation of China (59809005) and the Science Foundation of Shanghai Municipal
Commission of Science and Technology (96QF14009) |
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| Keywords: | rock rheology fracture criteria grey prediction time prediction |
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