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Experimental research on the theory of LURR(Load/unload response ration)
Authors
Elizarov S
Li Q
+9 more
Victor K
Wu ZS
余怀忠
夏蒙棼
尹祥础
彭克银
李敏
梁乃刚
许昭永
Publication date
1 January 2003
Publisher
Abstract
利用大尺度岩石试件破坏声发射实验,对加卸载响应比(Load/Unload Response Ratio)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
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Institute Of Mechanics,Chinese Academy of Sciences
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Last time updated on 12/02/2018