• 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.

• Journal of Korean Society for Geospatial Information Science
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• v.22 no.4
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• pp.165-173
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• 2014

Open-pit mining method, is safe relatively work as compared with underground mining. And high yield, low production cost, has the advantage that it can provide a lot of production. But deforestation, tailings and slag deposition, mineral debris, dust, water, noise, land subsidence, sediment runoff discharge, I have internalized environmental disaster predisposing factors, such as landslides. Thus, it may be noted, also by typical environmental regulations. We try to deal with the changes in open pit terrain and environment related issues. Then, use the recovery period and the open pit mine and ecology off the gun, environment-friendly development of accurate monitoring methods, systems of this development is required. The use of open platforms and open source GIS tools have been developed during this period, it needs to develop spatial information environment monitoring system open pit mine construction.

• Journal of the Korea Organic Resources Recycling Association
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• v.5 no.1
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• pp.71-85
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• 1997

There are approximately 500 abandoned mining sites in Korea. Abandoned mines cause various environmental and safety problems such as landscape damage, soil, groundwater and stream pollution by heavy metal, acid mine drainage and soil erosion. According to the survey, there are significant numbers of mines causing environmental problems in Korea. For a environmentally sound management of abandoned mines, the Soil Pollution Control Act should include the regulation concerning soil pollution and recovery standards of the abandoned mines. Also, comprehensive survey about abandoned mines, setting-up of tile recovery priority, finance for clean-up are necessary.

• Economic and Environmental Geology
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• v.34 no.6
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• pp.539-553
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• 2001

Geochemical data of the Han river water, including four tributary water samples in the main Han river are presented in this paper. The concentration of dissolved ions in the North Han river water decreases in order of Ca>Na>K>Mg and HCO$_3$>NO$_3$>SO$_4$>Cl, which it mainly affected by the chemical weathering of granite and gneiss in the drainage basin. Meanwhile, the South Han river water shows a decreasing order of Ca>Mg>Na>K and HCO$_3$>SO$_4$>NO$_3$>Cl, which is controlled by the bed rock geology of carbornate rooks and the inflow of acid mine drainage from the metal and coal mines in the Taebaegsan and Hwanggangri areas. The main Han river waters are characterized by unusually high concentration of Na, Cl and SO$_4$ (Ca>Na>K>Mg and HCO$_3$>SO$_4$>CI>NO), indicating a significant anthropogenic pollution by human activities in the metropolitan Seoul city. The geochemical data of the Han river waters from 1981 through 1996 to 1999 records a significant increase in SO$_4$ and NO$_3$, which responsible for the increasing arid mane drainage and municipal anthropogenic pollution.

• Journal of the Korean Wood Science and Technology
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• v.29 no.4
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• pp.40-47
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• 2001

To remove $Zn^{2+}$(422 ppm) and $Mn^{2+}$(53.1 ppm) from Sambo mine runoff(the total amount of heavy metals : 107 ppm) in Whasung, packed bed column tests were run in two stages plastic columns. The non-treated bark(Pinus densiflora, Quercus accutisima) of each 6 kg were placed into columns. The height and diameter of column were 60 cm and 45 cm, respectively. Flow rate ranged to 1 ${\ell}$/min for 15 days. The concentration of heavy metal ions in filtrate was determinded periodically. By the treatment of oak bark the initial concentration of $Zn^{2+}$ was maintained under 10 ppm(the adsorption rate: 64%) for 24 hr, while pine bark kept the initial concentration of $Zn^{2+}$ under 20 ppm(the adsorption rate: 53%) for 15 hr. However the initial concentration of $Mn^{2+}$ was reduced only to 10.6~18.6 ppm (the adsorption rate: 20~35%) until 10 hr. Thereafter, the adsorption of $Mn^{2+}$ by bark decreased rapidly. There was little difference in the adsorption ratio of $Mn^{2+}$ between oak and pine bark. The use of bark to remove $Zn^{2+}$ in Samba mine runoff was effective, but it wasn't proper to remove $Mn^{2+}$.

• Economic and Environmental Geology
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• v.36 no.1
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• pp.17-25
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• 2003

Researches were carried out to investigate the characteristics and concentration of heavy metal elements of stream water through Dongmyoung abandoned metal mine and soil adjacent to the mine. The pH range of water was 5.9∼7.1 that implies the water environment was acidic to neutral. The contents and distribution aspects of heavy metals in water samples varied with geochemical characteristics of element, but the concentration of heavy metals has the tendency of increase closer to the mine in general. The results of soil analysis show that total heavy metal concentration of agricultural soil near mine was far lower than those of ore tailing and dumping site. Therefore, the effects of the abandoned mine on stream water and agricultural products were supposed to be insignificant, particularly because the portion of absorbed carbonates and reducible fractions among total heavy metal concentration was relatively lower than the other. Since, however total heavy metal concentrations of mining site were relatively higher than those of adjacent region, there is a possibility of heavy metal difussion when the chemical environment of the site changes due to migration of surface and underground water. It is suggested that the preventive measures for water and soil pollution by the heavy metals would be considered around the region.

• The Journal of Engineering Geology
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• v.18 no.4
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• pp.577-586
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• 2008

The formation of acid mine drainage is closely related to water chemistry and ochreous sprecipitates formed at the bottom of creeks because it is initially derived from the possible water-rock interaction in abandoned waste metals at the mine. According to analyses on water, precipitates, and alteration characters of ore metals in Dalseone mine, whitish precipitates formed at pHs above 5 while schwertmannite formed at pH $3{\sim}4$. Water chemistry vary with seasons. The water chemistry of the treatment site measured ir Octoter 2002 is characterized by lower pH, and higher Al, Zn, Cu contents relative to those in March, 2003. In the latter case, As and Cl contents are very high. $^{27}Al$ MAS NMR data show the presence of predominant octahedral Al in whitish precipitates. Metal ore minerals dissolve at margins, cleavage, or comer of crystals where reactive sites are potential. Pyrite dissolves, forming etch pits or smooth faces on the edge.

• 한국지구물리탐사학회:학술대회논문집
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• 2005.05a
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• pp.267-272
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• 2005

Geophysical surveys were performed in three abandoned mines: Jangpoong, Kwangyang, Imchon. The main objectives of the researches include delineating the pathways of leachate from acid mine drainage(AMD), mapping buried rock wastes and tailings, detecting drainage pipes, and investigating the gallery and membrane, if they exist, Geophysical responses were well correlated with the results from water sample data(i.e., pH, EC, heavy metal contents, $SO_4^{-2}$). Main pathways of the leachate were successfully detected in electrical resistivity sections and self-potential(SP) profiles, whereas waste rocks, drainage pipes, and membranes were effectively located by incorporating seismic refraction, electrical resistivity and GPR methods.

• Proceedings of the Mineralogical Society of Korea Conference
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• 2000.10a
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• pp.31-42
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• 2000

1. 선진국의 경우 한 사업체에서 광산-가공산업체-연구소를 운영하는 시스템으로서 제품규제부터 시작하여 계속적인 용도개발이 가능하다. 2. 한국의 벤토나이트 광업 및 가공산업체의 현황이 일본의 5분의 1규모이며 년간 생산량 및 수요량이 100,000톤 규모로서 세계 15위권에 해당된다. 3. 벤토나이트 광업의 영세화로 효율적이고 장기적인 개발이 되지 못한다. 4. 광량의 고갈 및 개발 침체로 수입량이 증대되고 있다. 5. 새로운 용도개발이 요구된다. 특히 최근 증대되는 cat litter용, 흡착제용등 우선 개발이 용이한 용도개발을 추진해야 하며 다음으로 방사성 폐기물 처분장 liner 및 brick용, 폐수처리용 유기-벤토나이트, 쓰레기매립장 liner용과 화장품용등의 부가가치를 향상시킬 수 있는 용도개발이 시급하다고 본다.

• Proceedings of the KSEEG Conference
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• 2003.04a
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• pp.234-235
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• 2003

근대에 들어 우리나라는 산업 발전과 인구 증가로 인해 과거보다 많은 수자원을 필요로 하고 있고, 오염도 많이 진행되어 있다. 특히 가장 많이 사용되는 지하수는 농경을 위한 농약의 사용과 산업 폐기물 및 광산 폐수의 유입 등으로 인해서 오염이 되고 있다. 특히 해안지역에서 일어나는 지하수의 염수화는 많은 문제점을 야기한다. 해수침투는 해안 지역에서 지하수의 매장량을 감소시키고, 염도 증가로 인한 수질의 저하를 발생시켜 계속적인 지하수의 개발을 어렵게 만들고 인근 지역의 발전을 저해하게 된다. (중략)