基于裂纹扩展模型的脆性岩石破裂特征及力学性能研究
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李响,怀震,李夕兵,张倬瑶
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Study on Fracture Characteristics and Mechanical Properties of Brittle Rock Based on Crack Propagation Model
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Xiang LI,Zhen HUAI,Xibing LI,Zhuoyao ZHANG
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表3 断裂韧度试验所得花岗岩基本力学参数
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| 断裂韧度类型 | 编号 | P/kN | r/mm | R/mm | B/mm | N | K/（MPam1/2） |
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| Ⅰ型 | G1-0 | 11.64 | 8.5 | 25.2 | 25.6 | 1.165 | 1.093 | | G2-0 | 10.42 | 8.5 | 24.5 | 26.1 | 0.987 | | G3-0 | 12.16 | 8.4 | 25.2 | 24.6 | 1.181 | | G4-0 | 11.10 | 8.7 | 25.4 | 25.2 | 1.063 | | G5-0 | 11.08 | 8.3 | 24.7 | 25.3 | 1.061 | | 均值 | 11.28 | 8.48 | 25.0 | 25.36 | | 1.077 | | Ⅱ型 | G1-26.7 | 10.86 | 8.4 | 25.3 | 25.2 | 1.899 | 1.673 | | G2-26.7 | 10.68 | 8.5 | 24.4 | 25.7 | 1.682 | | G3-26.7 | 10.04 | 8.6 | 24.6 | 25.2 | 1.609 | | G4-26.7 | 10.22 | 8.5 | 25.4 | 26.2 | 1.517 | | G5-26.7 | 11.28 | 8.3 | 25.2 | 25.6 | 1.707 | | 均值 | 10.62 | 8.46 | 24.98 | 25.58 | | 1.638 |
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