摘要
我们在中科院力学所非线性连续介质力学开放实验室（ＬＮＭ）材料试验机（ＭＴＳ）上做了岩石压缩破坏的加卸载实验，得到了以应变为响应（即弹性常数的倒数为响应率）的加卸载响应比。实验结果与理论以及实际地震中的加卸载响应比相一致，即加卸载响应比在临近破坏前上升。故此，加卸载响应比可以被用做岩石破坏及地震预测的前兆。
The Load/Unload experiment of rock failure under pressure has been carried out in Material Test System (MTS) in Laboratary for Non linear Mechanics of Continuous Madia (LNM),Institute of Mechanics,Chinese Academy of Sciences,and Load/Unload Response Ratio (LURR) values with strain as response (inverse elastic constant as response rate) have been obtained.The experiment results are in accordance with theoretical results and those in actual earthquakes:LURR rises just before failure of rock.So LURR can be used as the precursor of rock failure and earthquake prediction.
出处
《中国地震》
CSCD
北大核心
1998年第2期126-130,共5页
Earthquake Research in China
基金
国家自然基金
中国地震局"九五"项目
关键词
加卸载响应比
岩石破坏实验
地震预报
实验模拟
Load/Unload response ratio,Experiment of rock failure,Earthquake prediction
