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Article: Detection and evaluation of AE waves due to rock deformation.
- Article from:
- Construction and Building Materials
- Article date:
- July 1, 2001
- Author:
CopyrightCOPYRIGHT 2001 Reed Business Information, Inc. (US). This material is published under license from the publisher through the Gale Group, Farmington Hills, Michigan. All inquiries regarding rights should be directed to the Gale Group. (Hide copyright information)
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Abstract
In Japan, rock failure is one of the most frequent disasters as well as earthquakes. Because rock materials have brittle natures, deformation due to micro to macro fracture is normally of transient phenomenon. Acoustic emission (AE), detected as a premonitory phenomenon could be useful for prediction of eventual rock failure. In the paper, therefore, a prospective method to install AE sensors into the rock slope (WEAD) is developed. A series of studies on the WEAD are conducted to evaluate AE signals in the laboratory. Based on the experimental results, the criteria for classifying fracture states are proposed. Then, applying the criteria to the field ...