Prediction of slope failure based on AE activity

被引：42

作者：

Shiotani, T ^{[1
]}

Ohtsu, M ^{[1
]}

机构：

[1] Tobishima Corp, Technol Res Inst, Chiba 2700222, Japan

来源：

ACOUSTIC EMISSION: STANDARDS AND TECHNOLOGY UPDATE | 1999年 / 1353卷

关键词：

b-value; graphical analysis; rate process analysis; slope failure; waveguide;

D O I：

10.1520/STP15787S

中图分类号：

O42 [声学];

学科分类号：

070206 ; 082403 ;

摘要：

Slope failure occurs transiently due to the brittle nature of failure, of which mechanisms are dependent greatly on the ground properties. Because the failure often produces large-scale damage, techniques for predicting slope failure are in urgent demand. In the present paper, the applicability of AE to the prediction of slope failure is discussed. Firstly, characteristics of AE wave attenuation in the ground are examined. Efficient wave-guide materials, which enable us to detect AE waves generated in the ground with good sensitivity, are studied. Secondly, in order to estimate the failure process inside the ground, a new procedure is proposed to determine the b-value in realtime from the peak-amplitude distribution of acquired AE waveforms. Finally, curve-fitting techniques such as graphical analysis and the rate process analysis are applied to AE activity to predict the slope-failure time.

引用

页码：156 / 172

页数：17