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Kafe 바로가기주관연구기관 | 한국지질자원연구원 Korea Institute of Geoscience and Mineral Resources |
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연구책임자 | 이동길 |
참여연구자 | 김영주 , 조영도 , 신승욱 , 박삼규 , 강상수 , 윤치호 , 강중석 , 이희욱 , 박종명 , 우남섭 |
보고서유형 | 연차보고서 |
발행국가 | 대한민국 |
언어 | 한국어 |
발행년월 | 2015-12 |
과제시작연도 | 2015 |
주관부처 | 미래창조과학부 KA |
사업 관리 기관 | 한국지질자원연구원 Korea Institute of Geoscience and Mineral Resources |
등록번호 | TRKO201600000651 |
과제고유번호 | 1711027220 |
DB 구축일자 | 2016-04-23 |
키워드 | 광산설계,통기,채광,광산안전,광산개발Mine design,Mine ventilation,Exploitation,Mine safety,Mine development |
□ 최종(연차) 목표
○ 설계 대상광산의 3D DB 구축 및 광산 설계인자 도출
- 광산 3D 데이터베이스 구축
- 대상광산의 통기모델 개발 및 실험
- 현장 암반의 안정성 평가인자 도출
□ 개발내용 및 결과
○ 광산 3차원 DB 구축
- 대상 광산 개발 및 광체 관련자료 수집
- 지질구조 규명 및 3차원 지질모델링 구현
- 기존광체의 광량 평가
○ 통기 설계기술 개발
- 대상광산의 통기실험 및 통기분석 및 평가
- 광산 국부통기 전산모델링
○ 광산 안정성 평가기
□ 최종(연차) 목표
○ 설계 대상광산의 3D DB 구축 및 광산 설계인자 도출
- 광산 3D 데이터베이스 구축
- 대상광산의 통기모델 개발 및 실험
- 현장 암반의 안정성 평가인자 도출
□ 개발내용 및 결과
○ 광산 3차원 DB 구축
- 대상 광산 개발 및 광체 관련자료 수집
- 지질구조 규명 및 3차원 지질모델링 구현
- 기존광체의 광량 평가
○ 통기 설계기술 개발
- 대상광산의 통기실험 및 통기분석 및 평가
- 광산 국부통기 전산모델링
○ 광산 안정성 평가기술 개발
- 시추코어를 이용한 암석 물성실험 및 수행
- 현장 암반의 암반분류 평가 및 현장 초기지압 측정
- 대상광산의 역학적 안정성 평가
○ 개발 및 채광공정 설계기술 개발
- 대상광산의 출수량 산정 및 배수계통 평가
- 대상광산의 개발 및 채광 공정평가
□ 기대효과
○ 국내 및 해외 광물자원개발기업의 광산설계 기술수요 충족 및 침체된 국내 광산기술 선진화
○ 효율적인 광산개발에 의한 광산개발 운영비 절감 및 채산성 향상
○ 6대 전략광종 및 신전략광종의 목표 자주개발율 제고 및 안정적이고 지속적인 기반산업원료광물 수급 실현
□ 적용분야
○ 국내외 유망광상의 광산설계 및 평가에 관한 핵심적인 정보와 설계기술 제공
○ 안전하고 경제적이며 효율적인 광산개발을 위한 기반기술 제공
Ⅳ. Results of the Study
◦ Establishment of 3D database of mine
- Collect the data including drawing, drilling, development status and reports on mine through relevant organizations and share the data with outsourcing agency to use for the study.
- Development of 3D database using 3D topogra
Ⅳ. Results of the Study
◦ Establishment of 3D database of mine
- Collect the data including drawing, drilling, development status and reports on mine through relevant organizations and share the data with outsourcing agency to use for the study.
- Development of 3D database using 3D topography, drilling DB, opening model, ore body model and geological modeling based on data and as a result of ore body modeling, the ore resources of existing ore body is estimated.
◦ Development of mine ventilation design technology
- Computation model of natural ventilation was developed in NMC Moland mine, which showed a good match with the ventilation test result.
- Wind direction of natural ventilation was same between calculation and measurement. Whereas natural ventilation pressure was low at 31 Pa, the quantity of air flow was relatively high. It was expected that large vertical stopes help the air flow in the underground.
- Analysis of behavioral characteristics of pollutants was conducted by ventilation condition and ventilation evaluation was conducted using ventilation evaluation index developed so as to identify the problem with ventilation and proposed the countermeasure which proved to improve the ventilation efficiency 3 to 43 times in maximum.
- Test device to identify the natural ventilation characteristics depending on daily temperature range was designed and fabricated for the first time ever and as a result of the test, temperature, humidity and air velocity in mine remained unchanged, unlike those out of drift or at portal, which was considered attributable to constant atmospheric pressure.
- A computational fluid flow analysis was conducted for the distance between intake air duct and the entrance to duct at working face in a single drift and evaluation of retention time, temperature distribution, air velocity and vortex were presented.
◦ Development of mine stability evaluation technology
- After making a borehole, hydraulic fracturing test was conducted and as a result, initial stress ratio depending on depth was measured and maximum horizontal principal stress direction was studied by televiewer test.
- 8 kinds of rocks representing the mine region were selected and elastic characteristics and joint characteristic were identified through the mechanical tests and RMR obtained from site investigation and core analysis was presented.
- Stability evaluation depending on shape of drift and support pattern was conducted, making use of measured initial stress ratio, mechanical characteristics of the intact rocks and rock mass classification so as to estimate the stability of the mine.
◦ Development of mine operational design technology
- Analysis of blasting pattern was carried out to identify the problem and the alterative was proposed for more stable and cost efficient blasting.
- Drainage system of the mine was investigated and drainage capacity was estimated.
- A cycle time (CT) of drilling operation was measured, which was then compared with the developed evaluation model of drilling operation. The results showed a good agreement.
- Evaluation technique of unit operation for mine development that can evaluate the stability of the drilling and charging process and capability of process was developed for the first time ever in a mine and the test of applicability was conducted.
- Measurement of haulage CT depending on work condition was made and rolling resistance was estimated and operation efficiency was evaluated.
- Statistical evaluation approach of CT depending on work condition was developed and evaluation technique of specific value of CT in haulage unit and distribution pattern was presented.
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