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2019 Vol.56, Issue 2 Preview Page

Research Paper

Numerical Analysis of Modified Electrical Resistivity Survey for Filling Status of Mine Backfills

변형된 전기비저항 탐사를 이용한 광산 채움재 충전 상태 파악을 위한 수치해석 연구

Jinpyo Hong1
,
Seokhoon Oh1*
,
Bomi Lee1
홍 진표1
,
오 석훈1*
,
이 보미1
1강원대학교 공과대학 에너지자원공학과
* Corresponding Author
30 April 2019. pp. 140-154
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Abstract

Modified electrical resistivity survey was considered to investigate the state of the cavity and distribution of the backfill materials in a mine, and its numerical analysis was performed. The current flow was analyzed according to each modified array, and the state of the backfill material was predicted using the visualized 3-D equipotential distribution. The potential difference of each array showed an anomaly at the boundary between two different materials. Analysis of the equipotential distribution map made it possible to interpret the main current flow path, and the boundaries of the materials were identified by the density of equipotential lines. As a result, the backfill state in the abandoned mine could be interpreted through the analysis of the potential difference graph and the equipotential distribution map.

Keywords
Backfill materials
Modified electrical resistivity survey
Cavity
Numerical analysis
Mine

광산에서 채움재가 충전됨에 따라 발생할 수 있는 공동이나 채움재의 분포 상태를 파악하기 위해 물리탐사 기법 중 전기비저항 탐사의 활용 방안에 대해 고찰하였으며, 이를 위해 변형된 전기비저항 탐사법을 적용하여 수치해석을 실시하였다. 각 배열법에 따라 전류흐름을 분석하였으며 가시화한 3차원 등전위 분포도를 통해 채움재의 상태를 예측하고자 하였다. 각 배열법에서 획득한 전위차는 서로 다른 두 매질이 만나는 경계면에서 이상을 보였다. 등전위 분포도 분석을 통해 전류가 흐르는 경로를 알 수 있었고, 등전위선 밀도를 이용하여 매질의 경계를 파악할 수 있었다. 결과적으로 변형된 전기비저항 배열법을 이용한 수치해석에서 전위차 그래프와 등전위 분포도 해석을 통해 갱도 내 채움재의 충전 상태를 파악할 수 있었다.

키워드
채움재
변형된 전기비저항 탐사
공동
수치해석
광산
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Information
  • Publisher :The Korean Society of Mineral and Energy Resources Engineers
  • Publisher(Ko) :한국자원공학회
  • Journal Title :Journal of the Korean Society of Mineral and Energy Resources Engineers
  • Journal Title(Ko) :한국자원공학회지
  • Volume : 56
  • No :2
  • Pages :140-154
  • Received Date : 2019-03-06
  • Revised Date : 2019-04-24
  • Accepted Date : 2019-04-29
  • DOI :https://doi.org/10.32390/ksmer.2019.56.2.140
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