探头不同耦合方式AE法岩石应力测量效果比较

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不共重要环节，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法的对比实验，证实地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，而且由于探头与试样作线耦合获得更高的测量精度。

A COMPARISON OF PROBE COUPLING MANNERS IN ROCK STRESS MEASUREMENT BY AE

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.