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岩石Kaiser效应方向独立性的研究现状及进展 被引量:6

Current Situation and Development of Research on Direction Independence of Rock Kaiser Effect
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摘要 岩石声发射Kaiser效应测量地应力方法具有经济、简便、可大量测试的优点,吸引国内外学者广泛的注意,并进行了大量的研究。然而,由于岩石Kaiser效应的复杂性,还存在一些基础理论问题尚未解决,引起对部分Kaiser效应研究成果的争论。本文简要介绍了Kai-ser效应测量地应力的基本原理,指出声发射Kaiser效应存在方向独立性问题,综述了国内外学者研究Kaiser效应方向独立性的不同成果:有学者研究表明,单轴压缩下,当θ小于10°时可以观察到Kaiser效应,当θ大于10°时则观察不到Kaiser效应;另外一些研究者却认为,Kai-ser效应的存在与否,与两次加载间的夹角无关。在此基础之上探讨了Kaiser效应存在方向性对岩石Kaiser效应测量地应力的影响,并提出需要加强进一步的研究。 The stress measurement method based on Kaiser Effect of acoustic emission(AE)of rock is an economic,simple technique with large amount of tests proceeded.Domestic and foreign scholars paid wide attention to it,and did a lot of research works.However,because of the complexity of the Kaiser Effect of rock,there are still some unsolved basic theoretical problems existed that cause debate on some part of the research on Kaiser Effect.This paper introduced the basic principles of stress measurement on Kaiser Effect and pointed out that there was direction independence of Kaiser Effect in stress measurement.Overview of the different results of the study on the direction independence of Kaiser Effect by domestic and foreign scholars shows:Some scholars have shown that under uniaxial compression,when θ is less than 10°,the Kaiser Effect can be observed,when θ is greater than 10°the Kaiser Effect is not observed;Other researchers suggest that,Kaiser Effect has nothing to do with the angle between the two loadings.On basis of these,the influence of Kaiser Effect's direction independence on measuring ground stress by using Kaiser Effect of a rock is also discussed,and the authors propose that more works should be done in the future.
出处 《地下空间与工程学报》 CSCD 北大核心 2012年第6期1185-1191,1214,共8页 Chinese Journal of Underground Space and Engineering
基金 国家自然科学基金青年科学基金(No.51008319) 第43批留学回国人员科研启动基金(教外司留[2011]1568号) 重庆市科委自然科学基金计划资助项目(CSTC 2009BB6031)
关键词 地应力测量 岩石声发射 KAISER效应 方向独立性 stress measurement acoustic emission of rock Kaiser Effect direction independence
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参考文献34

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