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| 1 | 加卸载响应比(LURR)理论的实验研究显示文摘利用大尺度岩石试件破坏声发射实验 ,对加卸载响应比 (Load UnloadResponseRatio)理论进行了实验研究。实验采用的加载条件力求能够模拟地下岩石的复杂受力过程。在加载过程中 ,岩石试件内部出现的损伤用声发射技术进行了记录。实验数据经过分析之后所得的结论与加卸载响应比理论预测的结果相符合。把加卸载响应比值Y的变化情况与声发射事件定位的过程相对比 ,也可以进一步看出岩石材料内部的损伤发展过程与加卸载响应比Y值的变化具有一致性。而高Y值的异常情况出现 ,又是在材料发生最终破坏之前 ,所以 ,可以用加卸载响应比理论定量地分析岩石试件损伤演化情况 ,从而对岩石材料的破坏及地震做出预测。实验结果再一次验证了加卸载响应比理论。 | 余怀忠 尹祥础 夏蒙棼 梁乃刚 李敏 许昭永 彭克银 Victor Kukshenko Wu Zhishen Qi Li Surguei Elizarov | 2003 | 中国地震2003,19,1: | 21 |
| 2 | 地震临界点理论的实验研究显示文摘按照临界点理论 ,在大地震或岩石等脆性材料破坏发生之前能量会加速释放 (AER) ,这种加速过程呈幂律变化 (power law) .本文通过大尺度岩石破裂声发射实验 ,对这一临界现象进行了研究 .实验分别采用 3种岩石试件 ,并且实现了不同轴压加载历史以及三轴应力状态 ;实验利用声发射技术记录了微裂纹产生和扩展时所释放的弹性能 (声发射 ) ;实验结果证实了临界点理论 ,在不同的实验条件下 ,岩石材料在受压破坏之前弹性能会出现明显的加速释放过程 .本文还对使用AER预测中期地震进行了初步研究 . | 余怀忠 尹祥础 夏蒙棼 许昭永 李敏 梁乃刚 彭克银 Victor Kukshenko Surguei Elizarov | 2004 | 地震学报2004,,S1: | 17 |
| 3 | 模拟引潮力作用下岩石破坏前兆的实验研究——加卸载响应比(LURR)理论和能量加速释放(AER)显示文摘大地震前加卸载响应比升高和能量加速释放这2种现象可以用来对地震进行中期预报。同时,加卸载响应比升高和能量加速释放有相同的物理机制。实验对于揭示地壳岩石的变形和破坏规律是非常重要的。在三轴应力条件下进行了岩石破坏声发射实验,声发射技术是研究岩石变形破坏微观机理的重要手段。为了模拟日月引潮力对地球的加载和卸载作用,在一常数加载率的轴向压力作用下,叠加上微小的正弦扰动,力求能够模拟地下岩石复杂的受力状态。实验过程中记录到大量的声发射信息,声发射记录包括声发射发生的时间、空间坐标和振幅,它能够反映岩石试件内部每一个损伤(微裂纹)发生的时间、地点和强度。利用声发射记录系统地分析了岩石试件破坏前能量释放及加卸载响应比的演化情况,结果显示,岩石试件宏观破坏前出现了能量加速释放及加卸载响应比剧增这2种前兆现象,从而对地震临界点理论给予了实验支持,同时也为地震预测提供了实验依据。 | 张晖辉 尹祥础 梁乃刚 李世愚 余怀忠 Y.C.Wang C.Yin Victor Kukshenko Nikita Tomiline Surguei Elizarov | 2005 | 岩石力学与工程学报2005,24,17: | 16 |
| 4 | 态矢量方法的实验研究显示文摘在地震等灾变的发生之前,会出现一定的前兆现象。文中通过实验方法对这些前兆现象之一的态矢量的异常变化进行了研究。实验使用声发射技术(AcousticEmission),对三轴应力条件下岩石试件内部微裂纹的产生和扩展进行了记录。实验结果表明在岩石试件最终破坏之前,表征态矢量的相关参量都发生了异常明显的变化,这表明态矢量的异常变化可以被用作为岩石等脆性材料灾变的前兆,使用态矢量方法可以对脆性材料的破坏乃至地震作出预测。 | 余怀忠 尹祥础 张永仙 夏蒙棼 梁乃刚 李敏 许昭永 彭克银 颜玉定 Victor Kukshenko Wu Zhishen Qi Li Surguei Elizarov | 2004 | 地震2004,24,3: | 8 |
| 5 | Load-Unload Response Ratio (LURR), Accelerating Moment/Energy Release (AM/ER) and State Vector Saltation as Precursors to Failure of Rock Specimens显示文摘 | Xiang-Chu Yin Huai-Zhong Yu Victor Kukshenko Zhao-Yong Xu Zhishen Wu Min Li Keyin Peng Surgey Elizarov Qi Li | 2004 | Pure and Applied Geophysics (-)2004,,11: | 1 |
| 6 | Load/Unload Response Ratio (LURR),Accelerating Energy Release (AER) and State Vector Evolution as Precursors to Failure of Rock Specimens显示文摘 | YIN Xiangchu YU Huaizhong KUKSHENKO V | 2004 | Pure and Applied Geophysics2004,161,1112: | 1 |
| 7 | Load-Unload Response Ratio (LURR), Accelerating Energy Release (AER) and state vector evolution as precursors to failure of rock specimens 显示文摘 | Yin Xiangchu Yu Huaizhong Victor Kukshenko | 2004 | Pure and Applied Geophysics2004,161,1112: | 1 |
| 8 | Load-Unload Response Ratio (LURR), Accelerating Moment/Energy Release (AM/ER) and state vector saltation as precursors to failure of rock specimens 显示文摘 | Yin X C Yu H Z Kukshenko V | 2004 | Pure and Applied Geophysics2004,161,11: | 1 |
| 9 | Experimental research on critical point hypothesis显示文摘 | Huai-zhong Yu Xiang-chu Yin Meng-fen Xia Zhao-yong Xu Min Li Nai-gang Liang Ke-yin Peng Kukshenko Victor Zhi-shen Wu Qi Li Elizarov Surguei | 2004 | Acta Seismologica Sinica2004,,1: | 1 |
| 10 | Load-Unload Response Ratio (LURR),Accelerating Energy release (AER)and State Vector Evolution as Precursors to Failure of Rock Specimens显示文摘 | Yin X C Yu H Z Kukshenko V | | 0,,: | 1 |
| 11 | Load-Unload Response Ratio (LURR),Accelerating Energy Release (AER) and State Vector evolution as precursors to failure of rock specimens显示文摘 | YIN Xiang-chu YU Huai-zhong Victor Kukshenko | 2004 | Pure Appl Geophys2004,161,910: | 1 |
| 12 | Experimental research on critical point hy- pothesis显示文摘According to the critical point hypothesis (CPH), energy release would accelerate in power law before occurrence of large earthquakes or failure of brittle materials. In the paper, CPH was studied by acoustic emission experiments of large-scale rock samples. Three kinds of rock samples were used in the experiments. The tri-axial loading con- dition was applied under different loading histories. The released elastic energy (Acoustic emission) was recorded with acoustic emission technique as microcracks emerged and developed inside the rock samples. The experimen- tal results gave a further verification on the CPH. The elastic energy release of rock samples would accelerate be- fore the failure even under different experimental conditions. Primary studies were also made on medium-term earthquake prediction by using accelerating energy release (AER) in the paper. | 余怀忠 尹祥础State Key Laboratory of Nonlinear Mechanics Institute of Mechanics Chinese Academy of Sciences Beijing 100080 China Institute of Earthquake Science China Earthquake Administration Beijing 100036 China 夏蒙棼 许昭永 李敏 梁乃刚 彭克银State Key Laboratory of Nonlinear Mechanics Institute of Mechanics Chinese Academy of Sciences Beijing 100080 China Institute of Earthquake Science China Earthquake Administration Beijing 100036 China Victor Kukshenko 吴智深 李琦 Surguei Elizarov | 2004 | Acta Seismologica Sinica(English Edition)2004,17,z1: | 0 |