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http://dx.doi.org/10.12814/jkgss.2014.13.1.023

Application of Laser Distance Measurer to measure ground surface displacement in slopes  

Cho, Yong-Chan (Environmental Geology Department, Korea Institute of Geoscience and Mineral Resources)
Song, Young-Suk (Geologic Hazards Department, Korea Institute of Geoscience and Mineral Resources)
Publication Information
Journal of the Korean Geosynthetics Society / v.13, no.1, 2014 , pp. 23-31 More about this Journal
Abstract
In this study, the method to measure effectively the ground surface displacement of slope was proposed using the Laser Distance Measurer (LDM). Applying the proposed technique is more simple and easier than the complicated and high-priced instrument to measure the ground surface displacement. LDM is an instrument that the red laser aimed at the target and then the reflected laser used for calculating the distance. The advantages of LDM are easy operating method, high measurement precision and lower in price. To check the feasibility, the proposed method applied to the real site that the ground surface displacement of slope was occurred continuously. The ground surface displacements were occurred in various points of the natural and cut slopes located at the lower part of coal mine waste heap due to the load of waste heap. To measure directly the ground surface displacement in this site, 6 measurement sections and 26 measurement points were selected. As the result of the displacement measured by the proposed technique within a certain period time, the accumulative ground surface displacement could be measured as well as the velocity of displacement could be estimated. Also, the progress direction of ground surface displacement can be confirmed and predicted through the analysis of all measured result.
Keywords
Laser distance measurer; Natural slope; Cut slope; Ground surface displacement; Field application;
Citations & Related Records
Times Cited By KSCI : 4  (Citation Analysis)
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