Proceedings of the KSRS Conference (대한원격탐사학회:학술대회논문집)
- Volume 2
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- Pages.717-720
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- 2006
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- 1226-9743(pISSN)
PRODUCTION OF GROUND SUBSIDENCE SUSCEPTIBILITY MAP AT ABANDONED UNDERGROUND COAL MINE USING FUZZY LOGIC
- Choi, Jong-Kuk (Department of Earth System Sciences, Yonsei University) ;
- Kim, Ki-Dong (Department of Earth System Sciences, Yonsei University)
- Published : 2006.11.02
Abstract
In this study, we predicted locations vulnerable to ground subsidence hazard using fuzzy logic and geographic information system (GIS). Test was carried out at an abandoned underground coal mine in Samcheok City, Korea. Estimation of relative ratings of eight major factors influencing subsidence and determination of effective fuzzy operators are presented. Eight major factors causing ground subsidence were extracted and constructed as a spatial database using the spatial analysis and the probability analysis functions. The eight factors include geology, slope, landuse, depth of mined tunnel, distance from mined tunnel, RMR, permeability, and depth of ground water. A frequency ratio model was applied to calculate relative rating of each factor, and the ratings were integrated using fuzzy membership function and five different fuzzy operators to produce a ground subsidence susceptibility map. The ground subsidence susceptibility map was verified by comparing it with the existing ground subsidences. The obtained susceptibility map well agreed with the actual ground subsidence areas. Especially,