Tunnel and Underground Space (터널과지하공간)

Korean Society for Rock Mechanics and Rock Engineering (한국암반공학회)
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Mine Haulage System Design for Reopening of Yangyang Iron Mine using 3D Modelling

3차원 모델링을 이용한 재개광 양양철광의 운반시스템 설계

  • 손영진 (강원대학교 에너지.자원공학과 대학원) ;
  • 김재동 (강원대학교 에너지.자원공학과)
  • Received : 2012.11.16
  • Accepted : 2012.12.11
  • Published : 2012.12.31
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Abstract

To achieve mine development, a large amount of data concerned with the geological structure and the ore body had to be investigated and collected through geological survey, drilling and geophysical explorations. In most previous cases, however, the data were usually analyzed two dimensionally and those results showed some limits because of their 2D presentation. Those 2D maps such as geological plane sections or longitudinal sections cause lots of difficulties in understanding the complex geological structure or the feature of ore body in a spatial way. In this study, research area was set on the abandoned Yangyang iron mine in Korea and the Sugaeng ore body within the mine was selected as the research target to design a mine haulage system for reopening. A 3D mine model of this area was tried to be constructed using a 3D modelling software, GEMS. An accurate 3D model including the ore body, the geological structure, the old underground mine drifts and the new mine drifts was constructed under the purpose of reopening of the abandoned iron mine. Especially, mine design for trackless haulage system was conducted. New inclines and drifts were planned and modelled 3 dimensionally considering the utilization of old drifts and shaft. In addition to the 3D modelling, geostatistical technique was adopted to generate a spatial distribution of the ore grade and the rock physical properties. 3D model would be able to contribute in solving problems such as evaluating ore reserves, planning the mine development and additional explorations and changing the development plans, etc.

본 연구에서는 재개광을 계획하고 있는 (구)양양철광의 수갱광체를 연구대상으로 설정하고 이를 재개광하기 위한 운반시스템의 구축을 목적으로 광체 및 광체 주변의 지질구조와 구갱도 현황 및 신갱도 개설 계획을 3차원으로 모델링 하였다. 연구에 사용된 software는 GEMCOM사(社)의 GEMS로써 3차원의 매장량평가, 개발타당성 평가, 운영 관리용 프로그램이다. 2차원 지형도와 지표 지질도를 자료로 하여 지표 지형 및 지질을 3차원으로 모델링 하였으며 (구)양양철광 개발 당시 작성된 지질 단면도와 시추자료를 토대로 연구대상지역의 지질 구조 및 광체를 3차원적으로 생성하였다. 수갱광체는 충전된 채굴적, 공동, 잔광으로 구분하여 모델링하고 잔광부의 품위에 대한 시추 정보로부터 지구통계학적 기법을 적용하여 품위별 매장량 평가 결과를 얻을 수 있었다. 또한 기존 2차원 구갱도 개설 현황 자료를 이용하여 구갱도에 대한 3차원 모델링을 수행하였고, 무궤도 운반 시스템의 적용을 고려하여 신갱도의 크기와 배치를 3차원으로 설계하였다. 완성된 광체 및 운반 시스템의 3차원 모델을 이용하여 지하선광장의 위치를 선정하였다. 마지막으로 채취한 시료의 암석 물성값들을 기초로 광체 주위에 부존하는 물성을 암종별로 입력하고 지구통계학적 기법을 통해 미조사 부분에 대한 암석물성을 추정할 수 있는 3차원 공학적 모델링을 수행하였다. 이러한 과정을 통하여 얻어진 재개광 광산의 3차원 모델은 매장량 평가 및 개발계획 수립, 추가 탐사 지역의 선정이나 개발 계획의 변경 등의 문제들을 해결하고 체계적이고도 지속적인 광산 개발 기술 확립에 기여할 수 있을 것이다.

Keywords

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