Title:
METHOD AND APPARATUS FOR EVALUATING STABILITY OF SLOPE OF ROCK MASS BY REMOTE OBSERVATION
Document Type and Number:
Japanese Patent JP3536046
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a stability evaluating method for the slopes of a rock mass, and its apparatus for evaluating the stability of the slopes of the rock mass rapidly and easily.
SOLUTION: The temperature distributions and their changes with the passage of time of the slopes of the rock mass are measured by a thermal infrared image device 7, and the slopes are divided into groups in a control unit 1 on the basis of data on the temperature distributions and their changes with the passage of time. The slopes are measured by an electro-optical distance meter 5, and gradient data of each group are obtained. Reflection spectra of each group are measured by a spectroradiometer 6, and on the basis of the measured data b* values concerning the Lab colorimetric system of each group are calculated in the control unit 1. The correlation between each temperature change rate and b* value of each group is analyzed in the control unit 1, and approximate values of the speed of an elastic wave and the speed of an ultrasonic wave of a group which is in negative correlation are calculated by experience formulas from b* values concerning the group. From the found approximate values and the gradient data the slopes of the rock mass are evaluated.
Inventors:
Arai, Katsuhiko
Honda, Hideo
Sugimoto, Keiichi
Okajima, Shoji
Domae, Hiroko
Honda, Hideo
Sugimoto, Keiichi
Okajima, Shoji
Domae, Hiroko
Application Number:
JP2002154984A
Publication Date:
June 07, 2004
Filing Date:
May 29, 2002
Export Citation:
Assignee:
JAPAN SCIENCE & TECHNOLOGY CORP
SANWACON CO LTD
Arai, Katsuhiko
SANWACON CO LTD
Arai, Katsuhiko
International Classes:
E02D17/20; G01D21/00; G01K3/08; G06F17/15; (IPC1-7): G01D21/00; E02D17/20; G01K3/08; G06F17/15
Attorney, Agent or Firm:
川崎 好昭