| 摘要 |
PROBLEM TO BE SOLVED: To solve the problem wherein provided data requires an another method such as investigation boring for a planar, straight line-shaped and 3D analysis, though a great effort is continuously made for always monitoring and prediction for providing accurate data, due to requiring suitable specialty for determining the installation direction and its method or providing and analyzing the data, though an expansion gauge is installed as a method generally used for an investigation on a slope face collapse and a landslide. SOLUTION: An AE sensor is arranged in a part near a root of a tree, and AE generated by stress received to the root and AE generated by cutting the root are observed, and are amplified by an amplifier, and are analyzed by an AE analyzer, and the timing and a scale of the slope face collapse are predicted. The roots of a plant are vertically and horizontally distributed underground, and underground data can be accurately provided without depending on an expansion/contration device and the investigation boring by knowing a position of its AE generation. COPYRIGHT: (C)2009,JPO&INPIT
|
