Tunnel and Underground Space (터널과지하공간)

Korean Society for Rock Mechanics and Rock Engineering (한국암반공학회)
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A Fundamental Study on Backfilling and Monitoring System for Stability of Underground Mine Openings

채굴공동의 안정성 유지를 위한 채움재의 충전과 계측시스템 구축에 관한 기초연구요

  • Kim, Byung-Ryeol (Depart. of Energy and Resources Engineering, Kangwon National University) ;
  • Lee, Seung-Joong (Depart. of Research Institute for Earth Resources, Kangwon National University) ;
  • Choi, Sung-Oong (Depart. of Energy and Resources Engineering, Kangwon National University)
  • 김병렬 (강원대학교 에너지자원공학전공) ;
  • 이승중 (강원대학교 지구자원연구소) ;
  • 최성웅 (강원대학교 공과대학 에너지자원공학전공)
  • Received : 2019.12.13
  • Accepted : 2019.12.20
  • Published : 2019.12.31
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Abstract

To prevent possible accidents by surface subsidence, backfilling operation is known to be one of the most effective methods for ensuring the long-term ground stability because it can eliminate fundamentally the origin of underground mine opening collapse. Also, for effective backfilling of underground mine opening, it is necessary to keep monitoring of backfilled mine opening for analyzing several factors such as filling effect with change of backfill material and characteristics of backfill material. Therefore, in this study, a monitoring system which consists of measuring device and software program has developed to examine the performance of backfilling operation and verify to field applicability to underground mine. Sensors for measuring device have been selected through study of recent research papers and mock-up test has been performed to verify the system compliance. Also, monitoring result of the mock-up test compared to case studies in some countries. From monitoring result fo the mock-up test compared to case studies in some countries, consequently, it was concluded that the developed real-time monitoring system had ensured filed applicability in the underground mine.

지하 채굴공동의 충전은 채굴공동의 붕괴에 의한 지반침하의 근본적인 원인을 제거하여 광산지역의 장기적인 안정성을 확보할 수 있는 방법으로 알려져 있다. 이러한 채굴공동의 효율적인 충전을 위해서는 계측을 함께 수행하여 충전효과와 채움재의 역학적인 특성을 파악하는 것이 중요하다. 본 연구에서는 국내 지하광산의 안정성 유지를 위하여 광산채움재의 충전에 대한 기술수준을 검토하고, 광산채움재의 실시간 계측시스템을 구축하였다. 국내외 충전 및 계측사례를 조사하여 기술수준을 검토하고, 이를 기반으로 국내 지하광산에 적합한 계측기기와 항목을 산정하였으며, 효율적인 계측기기의 운영을 위하여 실시간 모니터링 프로그램을 개발하였다. 또한, 실시간 계측시스템의 현장적용성을 검토하기 위하여 광산채움재를 충전하고 계측을 수행하는 실물모형시험을 진행하였으며, 실물모형시험으로부터 계측된 결과를 분석하고, 국외의 충전 및 계측사례와 비교하였다. 이로 인해 본 연구에서 수행된 실물모형시험의 적합성을 확인하였으며, 실시간 계측시스템의 현장적용성이 확보된 것으로 판단하였다.

Keywords

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