基于核磁共振T2谱图的裂隙砂岩疲劳损伤分析
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毛思羽,曹平,李建雄,欧传景
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Fatigue Damage Analysis of Fractured Sandstone Based on Nuclear Magnetic Resonance T2 Spectrum
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Siyu MAO,Ping CAO,Jianxiong LI,Chuanjing OU
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表1 0°裂隙岩样疲劳加载前后核磁共振谱面积对比
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Table 1 Comparison of nuclear magnetic resonance spectrum area of 0° fractured rock samples before and after fatigue loading
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| 岩样代号 | 编号 | 小孔谱面积 | 疲劳加载后增幅 | 大孔谱面积 | 疲劳加载后增幅 |
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| 疲劳前 | 疲劳后 | 疲劳前 | 疲劳后 |
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| 0-19 | 1 | 7 765.15 | 7 865.13 | +1.29% | 6 088.45 | 6 530.75 | +7.26% | | 2 | 7 562.44 | 8 187.28 | +8.26% | 1 420.06 | 1 969.82 | +38.71% | | 3 | 7 209.69 | 7 990.78 | +10.83% | 5 592.66 | 6 159.69 | +10.14% | | 0-26 | 1 | 8 025.26 | 6 854.49 | -14.59% | 2 408.64 | 3 473.45 | +44.21% | | 2 | 8 205.95 | 8 446.64 | +2.93% | 2 653.97 | 5 242.45 | +97.53% | | 3 | 6 612.31 | 8 041.24 | +21.61% | 2 721.09 | 6 020.57 | +121.26% | | 0-31 | 1 | 8 019.32 | 7 611.89 | -5.08% | 2 626.23 | 5 901.92 | +124.73% | | 2 | 8 022.07 | 8 509.59 | +6.08% | 1 850.36 | 4 751.84 | +156.81% | | 3 | 7 888.17 | 7 936.17 | +0.61% | 2 687.42 | 5 587.12 | +107.90% |
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