• Title, Summary, Keyword: 폐광산

Search Result 222, Processing Time 0.034 seconds

Mathematical Approach for Environmental Impact Analysis of Soils from Abandoned Mines (폐광산주변 토양의 환경영향해석을 위한 수학적 접근)

  • Kim, Kwang-Tae;Kang, Mee-A
    • The Journal of Engineering Geology
    • /
    • v.18 no.3
    • /
    • pp.297-302
    • /
    • 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.

Study on Mine Reclamation Regimes for Redeveloping Closed Mines of Korea (폐광산 재개발 시 광해관리를 위한 제도개선 방안)

  • Kim, Dae-Hyung
    • Economic and Environmental Geology
    • /
    • v.42 no.6
    • /
    • pp.619-626
    • /
    • 2009
  • The price fluctuation of minerals are commonly occurred through the change of market condition, and the redevelopment of closed mines are usually happened if commercial requirement can be satisfied. After 2003, as the price of most of metals increased very rapidly, Korea government tried to find the possibility of reopening for some closed metal mines. The purpose of this article is to suggest the proper ways how effectively to regulate the mine pollution concerning the redevelopment of closed mines. For this work, with the recent price trends of metals and reopening possibility of closed metal mines in Korea were reviewed. And analysing the problems of regulations for the mine development permission and mine pollution control and reclamation process of Korea, several amendments of environmental and mining regulation regimes for redevelopment of closed mines were proposed.

토양 정밀 조사에 의한 폐광산 주변 토양의 오염 부지 특성 규명

  • 차종철;이정산;이민희;최정찬;김진원
    • Proceedings of the Korean Society of Soil and Groundwater Environment Conference
    • /
    • /
    • pp.346-349
    • /
    • 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.

  • PDF

응집제를 이용한 금속폐광산 침출수와 주변오염지하수의 정화효율실험

  • 김인수;도원홍;이민희;김명진;조종수
    • Proceedings of the Korean Society of Soil and Groundwater Environment Conference
    • /
    • /
    • pp.346-349
    • /
    • 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.

  • PDF

A Case Study on the Stability Analysis for the Road Construction above Abandoned Mine (폐광산 상부 도로 안정성 검토 사례)

  • 문상호;나승훈;이상필
    • Tunnel and Underground Space
    • /
    • v.14 no.5
    • /
    • pp.305-317
    • /
    • 2004
  • Due to the steep and narrow characteristic of domestic coal beds, the slant chute caving or sub-level caving method have been mainly adopted in Korea, whereas the long-wall mining has been widely used all around world. However, the slant chute caving or sub-level caving method have disadvantage of not giving much information on the scale and characteristic of abandoned mines. Hence, those information on the abandoned mines in Korea are not easily available. In this study, based on the characteristic investigation of the domestic mining methods, the geological survey and safety analysis were carried out for Donghae highway section 2. Finally, the optimum ground reinforcement methods for that site were selected.

Spore Diversity of Arbuscular Mycorrhizal Fungi in a Post-mining Area in Korea (폐광산 지역의 근권 토양에 분포하는 수지상균근균 포자의 다양성)

  • Park, Hyeok;Lee, Eun-Hwa;Ka, Kang-Hyeon;Eom, Ahn-Heum
    • The Korean Journal of Mycology
    • /
    • v.44 no.2
    • /
    • pp.82-86
    • /
    • 2016
  • In this study, we investigated the spore diversity of arbuscular mycorrhizal fungi (AMF) in rhizospheres of a post-mining area and a natural forest area in Jecheon, Korea. The rhizospheres of the post-mining areas were dominated by Acaulospora mellea, while those of the natural forest area were dominated by Ambispora leptoticha. The number of AMF spores in rhizospheres of the post-mining area was significantly higher than that in the rhizospheres of the natural forest area. Although the diversity index of each area showed no significant difference, the community similarity of AMF within the rhizospheres of natural forest area was significantly higher than that observed within those of post-mining area. These results showed that AM fungal communities in rhizospheres could change because of the degree of disturbance.

Distribution and remediation design of heavy metal contamination in farm-land soils and river deposits in the vicinity of the Goro abandoned mine (고로폐광산 주변 농경지 토양 및 하천 퇴적토의 중금속 오염 분포 및 복원 대책 설계)

  • 이민희;최정찬;김진원
    • Economic and Environmental Geology
    • /
    • v.36 no.2
    • /
    • pp.89-101
    • /
    • 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.

A Study on the Basic Geometry Analysis of Abandoned Underground Mine Tunnels in Korea and Advanced Measuring-Analysis Technology for Underground Mine Cavities (한국의 폐광산 지하 채굴갱도 기초형상 분석 및 개선된 광산 지하공동 측정·분석 기술 연구)

  • Kim, Soo-Lo;Park, Sung-Bin;Choi, Byung-Hee;Yun, Jung-Mann;Jeong, Gyo-Cheol
    • Tunnel and Underground Space
    • /
    • v.26 no.6
    • /
    • pp.455-465
    • /
    • 2016
  • The collapse of underground mine development void for mineral resources can cause the subsidence of ground surface. In order to prevent the subsidence of ground, data such as maps or pictures of past mining site is important information for current mine reclamation works. In particular, mine subsidence management was based on mining maps and pictures. The process of the mining area surveys, safety evaluation, and ground reinforcement are normally possible with information such as maps and pictures in past mining. During the Japanese colonial period and 1960's, a lot of mines were developed in Korea indiscriminately. However, mining information at that time is limited to use. In the future, mining information will become even more rare. MIRECO intends to establish a realistic alternative solution. In this study, the basic numerical information of developed mine tunnels in Korea is statistically reviewed, and advanced underground cavity measuring technology was studied. 4,473 mine tunnel opening data of 1,784 abandoned mines in korea were collected and sorted. As a result of the analysis, the average value of small mine tunnel openings in Korea was 1.982 m in height and 1.959 m in width. The mean value of shape factor was analyzed as 0.485. The summary of these numerical mine data will be helpful for understanding and researching Korean abandoned mines. Therefore, the development of measurement technology for abandoned mine cavities and tunnels is expected to facilitate more effective mine subsidence management works in Korea.

Environmental Pollution and Reclamation in the Abandoned Mines in Korea (국내 폐 광산 환경오염 실태 및 처리 현황)

  • Cheong Young-Wook;Min Jeong-Sik
    • 한국지구물리탐사학회:학술대회논문집
    • /
    • /
    • pp.75-89
    • /
    • 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.

  • PDF