摘要
以凯瑟效应测量岩石试样先存应力，声发射探头与试样的耦合是其重要环节．国内外学者采用的耦合方法，归结起来主要是面耦合与线耦合两种方式．作者以同一试样作了这两种耦合方式的对比实验，证实线耦合的测量效果优于面耦合．作者指出：使用圆柱状试样不仅制作简便、节省制作费用。
Coupling the acoustic emission probe with the specimen is the key link in the measurement of preexisting stress of the rock specimen by Kaiser effect. Scholars at home and abroad use the different coupling manners of side coupling and line coupling. Author makes the comparing experiment with the two coupling manners on one specimen,it is confirmed that the result of the line coupling is better than the side coupling. The paper gives the evidence that using the cylinder specimen is a good choice,and it is not only simple-making and money-saved,but also it will get high measurement precision with the line coupling.
出处
《地球物理学进展》
CSCD
1998年第3期67-73,共7页
Progress in Geophysics
基金
国家自然科学基金
关键词
声发射
地应力
凯瑟效应
探头
岩石应力
AE法
Acoustic emission
AE
Geostress
Kaiser effect
Incomplete erasion phenomena
