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Research Paper

Prediction of the Groundwater Inflow by Three-dimensional Hydrogeologic Modelling at an Underground Mine

3차원 수리지질모델링에 의한 갱내채광 광산의 출수량 예측

Donghui Kim1
,
Gyoungman Kim2
,
Daehoon Kim1
,
Seungju Jung1
,
Hwanjo Baek2*
김 동휘1
,
김 경만2
,
김 대훈1
,
정 승주1
,
백 환조2*
1강원대학교 공과대학 에너지자원･산업공학부
2(재)영월산업진흥원
* Corresponding Author
31 October 2018. pp. 383-394
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Abstract

Properties of fractured rock mass and groundwater inflow were investigated to construct a three-dimensional hydrogeologic model for an underground limestone mine. Hydrogeologic properties of rock mass were estimated from the literature review and field observation of rock discontinuities. An initial groundwater model was constructed from the records of the rainfall and groundwater level of the study area. This initial model was adopted to determine the groundwater level and hydrogeologic boundary conditions. The groundwater inflow into the mine drifts was periodically recorded for months, and was compared with the estimated values by the model. Also, the possible changes in the groundwater inflow induced by the further excavation were estimated using the constructed model. The results showed that the groundwater inflow data estimated by the three-dimensional hydrogeologic model helps the design and optimization of a mine pumping system.

Keywords
Three-dimensional hydrogeologic model
Groundwater Inflow
underground limestone mine

갱내채광 광산의 3차원 수리지질모델을 구축하기 위하여 균열암반의 공학적 특성과 출수현황을 조사하였다. 문헌자료와 불연속면 조사를 수행하여 암반의 수리지질학적 특성을 파악하고, 해당 지역의 강우조건 및 지하수위 자료를 활용하여 초기 예측모델을 설정하였다. 예측모델은 광산 지역의 지하수위 및 경계조건 설정에 적용하였고, 예측된 출수량을 실제 출수량과 장기간 비교하여 최종적인 3차원 수리지질모델을 구축하였다. 또한, 구축된 3차원 수리지질모델로부터 향후 갱도 굴진에 따른 갱내 출수량의 변화를 추정하였다. 이로부터 예측된 갱내 출수량은 배수 시스템 설계에 활용 가능할 것으로 판단된다.

키워드
3차원 수리지질모델
출수량
갱내채광 석회석 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 : 55
  • No :5
  • Pages :383-394
  • Received Date : 2018-10-11
  • Revised Date : 2018-10-25
  • Accepted Date : 2018-10-26
  • DOI :https://doi.org/10.32390/ksmer.2018.55.5.383
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