Proceedings of the KSRS Conference (대한원격탐사학회:학술대회논문집)
- Volume 2
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- Pages.728-731
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- 2006
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- 1226-9743(pISSN)
A COMPARATIVE ANALYSIS BETWEEN GROUND SUBSIDENCE AT ABANDONED UNDERGROUND COAL MINE AND ELECTRICAL RESISTIVITY SURVEY RESULTS USING GIS
- Ahn, Seung-Chan (Department of Earth System Sciences, Yonsei University) ;
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Lee, Sa-Ro
(National Geoscience Information Center, Korea Institute of Geoscience and Mineral Resources) ;
- Kim, Ki-Dong (Department of Earth System Sciences, Yonsei University)
- Published : 2006.11.02
Abstract
Ground subsidence near abandoned underground coal mines has become a serious social problem in Korea. The purpose of this study is to perform a comparative analysis between the ground subsidence area and the electrical resistivity measured by field survey at Samcheok City. A raster database composed of ground subsidence areas and electrical resistivity data was constructed for GIS. To analyze correlation between the two constructed raster datasets, we used a frequency ratio model. The results show that low and high electrical resistivity anomaly zones coincide with the existing subsidence areas. We infer that the high anomaly zone means saturated and low anomaly zone means vacant. It suggests that electrical resistivity might be a useful factor for analyzing ground subsidence hazard zone.
Keywords
- Ground subsidence;
- GIS;
- electrical resistivity;
- frequency ratio model;
- abandoned underground coal mine