지질공학 (The Journal of Engineering Geology)

  • 제23권1호
  • /
  • Pages.19-27
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  • 2013
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  • 1226-5268(pISSN)
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  • 2287-7169(eISSN)
대한지질공학회 (The Korean Society of Engineering Geology)
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계측결과 분석을 통한 석탄폐석 적치장 사면의 변형 특성

Deformation Characteristics of a Slope at a Coal Waste Depot through Analysis of Monitoring Results

  • 조용찬 (한국지질자원연구원 지구환경연구본부) ;
  • 송영석 (한국지질자원연구원 지구환경연구본부)
  • Cho, Yong-Chan (Geologic Environment Division, Korea Institute of Geoscience and Mineral Resources) ;
  • Song, Young-Suk (Geologic Environment Division, Korea Institute of Geoscience and Mineral Resources)
  • 투고 : 2012.12.14
  • 심사 : 2013.02.01
  • 발행 : 2013.03.31
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초록

본 연구에서는 강원도 삼척시에 위치한 도계 석탄폐석 적치장 사면과 적치장 하부의 자연사면에서의 변형을 조사하고, 이를 분석하였다. 석탄폐석 적치장 사면과 하부 자연사면의 거동을 조사하기 위하여 폐석적치장 상부에 신축변위계와 강우계를 설치하고, 폐석적치장 하부 자연사면에 지중경사계를 설치하였다. 신축변위계를 이용하여 폐석적치장 상부의 변위를 측정한 결과 누적강우량이 증가함에 따라 석탄폐석 적치장 사면 정상부에서 변위는 증가하는 것으로 나타났다. 한편, 지중경사계를 이용하여 폐석적치장 하부 자연사면의 변위를 측정한 결과 누적강우량이 증가함에 따라 적치장 하부 자연사면의 최대수평변위는 증가하는 것으로 나타났다. 그러나 폐석적치장 하부 자연사면에서 지하수위는 강우에 따른 변화가 없는 것으로 측정되었다. 계측결과에 따르면, 석탄폐석 적치장의 변형은 강우와 밀접한 관계가 있음을 확일 할 수 있다. 석탄폐석 적치장 사면은 강우침투로 인하여 단위중량이 증가하게 되고, 이는 석탄폐석 적치장 사면의 변형을 유발하였다. 그리고 적치장 하부 자연사면의 변형은 강우침투로 인한 석탄폐석 적치장의 하중증가에 의해 발생된 것으로 판단된다.

Deformation of a slope at a coal waste depot and the natural slope under the depot was surveyed and investigated at Dogye village in Samcheock city, Gangwon Province. To investigate the behaviors of the slopes, wire sensors and a rain gauge were installed on the crest of the waste depot slope and inclinometers were installed in the natural slope. The results of deformation monitoring at the crest of the waste depot slope using wire sensors revealed increased deformation with increasing cumulative rainfall. The results of monitoring horizontal deformation of the natural slope revealed that maximum horizontal deformation was also affected by cumulative precipitation. However, the groundwater level at the natural slope showed no change with rainfall. These measurements confirm that deformation at coal mine waste depots is closely related to precipitation, indicating that self-loading at such depots increases with rainfall infiltration, thus causing deformation of the waste depot slope. In addition, increasing the self-load of the coal mine waste depot may cause deformation of the underlying natural slope.

키워드

참고문헌

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피인용 문헌

  1. Application of Laser Distance Measurer to measure ground surface displacement in slopes vol.13, pp.1, 2014, https://doi.org/10.12814/jkgss.2014.13.1.023
  2. Estimation on Unsaturated Characteristic Curves of Tailings obtained from Waste Dump of Imgi Mine in Busan vol.30, pp.3, 2014, https://doi.org/10.7843/kgs.2014.30.3.47