• Proceedings of the Korean Society of Soil and Groundwater Environment Conference
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• 2003.09a
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• pp.346-349
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• 2003

광산 및 폐광산으로부터의 오염 및 유해영향에 대한 보고와 관심이 대두되면서 휴ㆍ폐광산에 대한 연구가 활발히 진행되고 있다. 본 연구는 경북 군위군의 고로 폐광산 주변 중 광미 및 광폐석으로 오염된 것으로 생각되어지는 하천 및 농경지에 대한 오염 정도와 분포를 규명하기 위하여 토양정밀조사를 실시하였다. 토양 오염 정밀조사 지침에 따라 총 741개의 토양 시료 분석 결과 Cu, Cd, Pb은 토양오염 우려 기준에 훨씬 미치지 못하였지만 As는 표토 및 심토 구간(0-30cm)에서 토양 오염 우려 기준 농도를 상당 수 초과하여 하천 및 농경지의 복원이 필수적임을 알 수 있었다. 합리적인 복원물량을 산출하기 위하여 배경치 농도(1.23mg/kg), 토양오염우려기준 40%농도(2.4mg/kg), 토양오염우려기준농도(6mg/kg), 토양오염대책기준농도(15mg/kg)별로 오염 등급을 나누어 오염 지도를 작성하고 각 등급별 복원목표에 따라 복원이 필요한 면적과 복원대상물량을 산출하였다. 본 연구는 오염토양의 복원을 목적으로 국내에서 최초로 실시된 대규모의 토양정밀조사라는 점에서 의미가 있으며, 이 결과는 실제 고로 폐광산지역의 복원 사업설계에 중요한 자료로 사용될 수 있다.

• Proceedings of the Korean Society of Soil and Groundwater Environment Conference
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• 2004.09a
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• pp.346-349
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• 2004

국내에 자연 방치된 폐광산에 대한 문제가 대두되면서 폐광산 주변지역에 대한 산성광산폐수와 중금속 광산폐기물의 오염실태조사가 활발히 진행되고 있다. 본 연구는 폐광산의 유출수와 광산폐기물에 주변 오염지하수 내의 중금속 As, Cd, Pb, Fe, Mn, Zn, Cu에 대하여 무기 응집제의 첨가와 pH의 조절에 의한 제거효율을 .실내 배치실험을 통하여 규명하였다. 본 실험을 통하여 황산알루미늄(Al$_2$(SO$_4$)$_3$ㆍ13～14$H_2O$), 염화 제2철(FeCl$_3$ㆍ6$H_2O$), 황산 제2철(Fe$_2$(SO$_4$)$_3$ㆍ n$H_2O$)을 이용하여 오염수내 중금속을 90%이상 제거할 수 있었으며, 폐광산 침출수나 오염 지하수의 중금속 제거에 0.1 wt%의 응집제 첨가만으로 응집제를 이용한 화학적 처리 방법이 효과적으로 사용될 수 있을 것으로 판단되었다.

• The Journal of Engineering Geology
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• v.18 no.3
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• pp.297-302
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• 2008

The main reason of the pollution caused by soils and tailings located at discussed mines is heavy metals and AMD(acid mine drainage). Human health is affected by these pollutants which are spreaded from the abandoned mines. In this study, we try a mathematical approach to predict the pollution level of heavy metals caused by the surrounding soils of abandoned mines. The new approach is established with the correlation between the distance and pH, ORP. The change of pH and ORP can be described by the rate of initial values to experimental values. We demonstrate a realistic possibility of the mathematical approach to assess an environmental impact from disused mines cause the rate range is 0.95 to 1.03 for 60 days. Therefore our proposed approach will be useful as a few promising method for the management of heavy metals in many mines.

• Economic and Environmental Geology
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• v.36 no.2
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• pp.89-101
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• 2003

River deposits and farmland soils were analyzed to investigate the pollution level of heavy metals in the vicinity of the Goro abandoned Zn-mine. Surface (0-40 cm) and subsurface (40-100 cm) soils were collected around a main river located at the lower part of the Goro mine, and analyzed by ICP-MS for Cd, Cu, Pb, Zn and Cr after 0. 1N HCI extraction and by AAS for As after IN HCI extraction. Concentrations of cadmium and lead at the surface river deposits close to the mine were over the Soil Pollution Warning Limit (SPWL), and 43% of sample sites (6 of 14 samples) were over SPWL for As suggesting that river deposits were broadly contaminated by arsenic. Results from farmland soil analysis showed that surface soils were contaminated by heavy metals, while only arsenic was over SPWL at 50% of sampling sites. Main pollution mechanism around the Goro mine was the discharge of mine tailing and waste rocks from the storage site to the river and to adjacent farmland during flood season. Pollution Grades for sample locations were prescribed by the Law of Soil Environmental Preservation, suggesting that the pollution level of heavy metals around the Goro mine was serious, and the remediation operation fur arsenic and the isolation of mine tailing and waste rocks from river and farmland should be activated to protect further contamination. The area needed to clean up was estimated from pollution distribution data and the remediation methods such as a soil washing method and a soil improvement method were considered as the further remediation operation for arsenic contaminated soils and river deposits around the Goro abandoned mine.

• 한국지구물리탐사학회:학술대회논문집
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• 2001.09a
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• pp.75-89
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• 2001

There are 334 coal mines and about 900 metal mines abandoned. The environmental problems such as acid mine drainage from adits etc. and the subsidence has occurred in the abandoned mines. In addition, soil has been contaminated by tailings. According to analysis of mine drainages, some of them from adits in the abandoned coal and metallic mines were acidic and polluted by heavy metals. Especially, water quality of coal mine drainages were different by areas. Treatment of mine drainage by conventional chemical treatment has the drawback because the operating cost is very expensive. The treatment system used in mine drainage is the natural treatment system such as anoxic limestone drain in adits and the constructed wetland. The method of reclamation for abandoned waste rocks and tailings impoundments are mainly landfilling.

• Economic and Environmental Geology
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• v.37 no.1
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• pp.35-48
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• 2004

This paper provides a comprehensive overview of geochemical approaches for investigating and assessing heavy metal contamination in abandoned mine sites. Major sources of contaminants at the abandoned mine sites are mine water, waste rocks, tailings, and chemicals used in beneficiation and mineral processing. Soil, sediment, surface and ground water, and ecological system can be contaminated by heavy metals, which are transported due to erosion of mine waste piles, discharge of acid mine drainage and processed water, and dispersion of dust from waste rocks and tailings. The abandoned mine sites should be characterized using various methods including chemical analysis, mineralogical analysis, acid generation prediction tests, leaching/extraction tests, and field tests. Potential and practical environmental impacts from the abandoned mines should be assessed based on the site characterization.

• Journal of the Korean Professional Engineers Association
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• v.45 no.4
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• pp.47-56
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• 2012

According to the policy of coal industry promotion, a lot of mines were abandoned. As the abandoned mines were neglected, environmental pollution such as settlement of ground, ground-water run-off, landscape damage etc were accompanied around abandoned mines. The government was promoting countermeasures of environmental contamination but most of the Countermeasures were aimed at protecting the ecological system not infrastructure. For this reason, abandoned mines impact on infrastructure has been relatively neglected. Most mines are located in mountainous so there is a tunnel among typical infrastructure around abandoned mines. In this paper, the effect of Mine drainage, Typical pollution source of abandoned mine, was introduced into the using tunnel focusing on the types and examples.

• Proceedings of the Korean Society of Soil and Groundwater Environment Conference
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• 2003.09a
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• pp.342-345
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• 2003

비소로 오염된 폐광산주변 하천 퇴적토 오염 복원을 위한 토양세척법의 복원효율을 규명하였다. 세척액에 대한 비소제거 효율을 규명하기 위해 오염된 3종류의 하천 퇴적토에 대하여 초산, 구연산, 염산 각 0.01, 0.05, 0.1, 0.5, 1N 수용액과 증류수(pH 5.41)에 대한 세척실험을 실시하였다. 실험결과 세척 효율은 염산과 구연산 용액의 경우 0.05N 이상에서 저농도의 구연산을 제외하고 99.9% 이상의 제거효과를 나타내었다. 초산의 경우 1N의 경우에도 36%와 71%의 낮은 세척 효율을 보였으며, 증류수로 세척한 경우에는 20% 내외의 세척 효율을 나타내었다. 이러한 세척 효율은 본 오염지역의 복원목표를 토양오염 우려기준의 40% 농도(2.4mg/kg)로 설정하여 하천퇴적토를 복원할 수 있음을 나타내고 있으며, 결론적으로 오염 퇴적토의 농도 분포에 따라 적절한 세척액을 선택한다면 세척 효과를 훨씬 증대시킬 수 있으리라 사료된다. 본 연구를 통한 세척효율 결과는 연구지역을 포함한 전국 각지의 폐광산 복원공정 설계에 중요한 자료로 활용될 수 있을 것으로 판단된다.

• Proceedings of the KSEEG Conference
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• 2005.04a
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• pp.152-155
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• 2005

• Proceedings of the Korean Environmental Sciences Society Conference
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• 1999.10a
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• pp.181-185
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• 1999