The Development of Landslide Monitoring System with High Sensitivity by AE Methods

点击翻译按钮获取中文摘要

Generally, it is impossible to detect directly acoustic emissions from the sliding mass because the flow slide of loose cohesionless materials is dominant in the sliding surface. Therefore, a new device for the landslide measurement, the acoustic emission monitoring rod, has been developed in this project. This monitoring rod is composed mainly of the composite materials of rosin and glass fiber moulded in a steel pipe and generates peculiar acoustic emissions in proportion to the deformation of rod. Practically, this monitoring rod is installed in a borehole through the sliding surface. The acoustic emissions are detected by the transducers fixed to both ends of the rod and are analyzed by the monitoring instrument designed specially for the landslide measurement.