광해방지를 위한 대규모 석탄 노천광의 배수설계 최적화
Control of open-pit mine drainage for mine reclamation using Geographic Information Systems
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참고문헌
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초록
본 연구에서는 인도네시아 파시르(Pasir) 석탄 노천광의 중부지역(Roto Middle)을 대상으로 노천광내 배수시스템을 분석하고, 채굴적 및 폐석 적재지에서 유출되는 오염수를 효과적으로 제어하기 위한 배수설계 최적화를 수행하였다. 정밀 지형측량을 통해 대상지역의 DEM(Digital Elevation Model)을 제작하였으며, GIS 기반의 배수 모델링을 기법을 적용하여 DEM으로부터 빗물의 흐름방향, 누적 흐름양, 집수구역의 분포 등 강우시 노천광 배수시스템의 특성을 추출하였다. 배수시스템에 대한 분석결과, 현재의 채굴적 내부 폰드(in-pit pond)의 면적과 배수설비의 배치, 운반로(haul road)의 경사구배 등에서 문제점이 발견되었으며, 발견된 문제점을 효과적으로 해결하기 위한 4가지 배수설계 최적화 방안을 제시하였다.서론
Abstract
This paper presents an application of GIS-based hydrological modeling and spatial analysis to a region of Roto Middle in the Pasir open-pit coal mine, Indonesia to effectively control the contaminated runoff for mine reclamation. A detailed topographical survey was performed at the study area to generate a reliable DEM(Digital Elevation Model). Hydrology tools implemented in ArcGIS 9.1 were used to extract the characteristics of drainage system such as flow direction, flow accumulation and catchment area from DEM. The results of spatial analysis showed that size of in-pit pond and arrangement of pumping facility are not suitable and some runoff drained through waste dump can flow in the river without any purification. Finally, four practical actions were suggested to optimize the design of drainage system in the study area for mine reclamation.
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