循环载荷下大试件岩石破坏声发射实验——岩石破坏前兆的研究

被引:76
作者
张晖辉
颜玉定
余怀忠
尹祥础
机构
[1] 中国科学院力学研究所非线性力学国家重点实验室
关键词
岩石力学; 岩石破坏前兆; 声发射; Kaiser效应; Felicity效应; 循环载荷; 加卸载响应比; 能量加速释放;
D O I
暂无
中图分类号
TU458 [室内岩石试验];
学科分类号
摘要
岩石等脆性材料在加载过程中,随着载荷的增加,材料内部的微裂纹产生、扩展并伴随着声发射现象的发生。声发射是研究脆性材料损伤演化的良好工具,它能连续、实时地监测脆性物体内部微裂纹的产生与扩展,这是其他任何方法都不具有的优势。在三轴应力条件下进行了大尺度岩石(片麻岩)破坏声发射实验,试件尺寸达1.05 m。为了模拟日、月潮汐力对地球的加载和卸载作用,在某一固定水平的轴向压力作用下,叠加上循环载荷。实验过程中记录到大量的声发射信息,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。利用声发射记录研究了预测岩石宏观破坏的 2 种前兆现象:能量加速释放及加卸载响应比剧增,为地震预测提供了实验依据。同时还发现,实验中存在声发射的 Felicity 效应。
引用
收藏
页码:3621 / 3628
页数:8
相关论文
共 24 条
  • [11] 地震震源物理中的临界现象[M]. 地震出版社 , 吴忠良[著], 2000
  • [12] Load-unload response ratio and accelerating moment/energy release critical region scaling and earthquake prediction
    Yin, XC
    Mora, P
    Peng, KY
    Wang, YC
    Weatherley, D
    [J]. PURE AND APPLIED GEOPHYSICS, 2002, 159 (10) : 2511 - 2523
  • [13] Critical sensitivity and trans-scale fluctuations in catastrophic rupture
    Xia, MF
    Wei, YJ
    Ke, FJ
    Bai, YL
    [J]. PURE AND APPLIED GEOPHYSICS, 2002, 159 (10) : 2491 - 2509
  • [14] Accelerated seismic release and related aspects of seismicity patterns on earthquake faults
    Ben-Zion, Y
    Lyakhovsky, V
    [J]. PURE AND APPLIED GEOPHYSICS, 2002, 159 (10) : 2385 - 2412
  • [15] Development of a New Approach to Earthquake Prediction: Load/Unload Response Ratio (LURR) Theory[J] . X.C. Yin,Y.C. Wang,K.Y. Peng,Y.L. Bai,H.T. Wang,X.F. Yin.Pure and Applied Geophysics . 2000 (11)
  • [16] Evolving Towards a Critical Point: A Review of Accelerating Seismic Moment/Energy Release Prior to Large and Great Earthquakes[J] . S. C. Jaumé,L. R. Sykes.Pure and Applied Geophysics . 1999 (2)
  • [17] Physical Basis for Statistical Patterns in Complex Earthquake Populations: Models, Predictions and Tests[J] . J. B. Rundle,W. Klein,S. Gross.Pure and Applied Geophysics . 1999 (2)
  • [18] Seismic Cycles and the Evolution of Stress Correlation in Cellular Automaton Models of Finite Fault Networks[J] . C. G. Sammis,S. W. Smith.Pure and Applied Geophysics . 1999 (2)
  • [19] A new approach to earthquake prediction: The Load/Unload Response Ratio (LURR) theory[J] . Xiang-Chu Yin,Xue-zhong Chen,Zhi-ping Song,Can Yin.Pure and Applied Geophysics PAGEOPH . 1995 (3)
  • [20] Complex Critical Exponents from Renormalization Group Theory of Earthquakes: Implications forEarthquake Predictions[J] . Didier Sornette,Charles G. Sammis.Journal de Physique I . 1995 (5)