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2019 Vol.56, Issue 2 Preview Page

Research Paper

Development and Field Test of a Distributed Acquisition System for High Efficiency Deep DC Resistivity Surveys

고효율 심부 전기탐사를 위한 분산계측 시스템 개발 및 현장시험

Sung-Ho Cho1
,
Hyun-Key Jung12
,
Hyosun Lee1*
,
Yesol Kim12
조 성호1
,
정 현기12
,
이 효선1*
,
김 예솔12
1한국지질자원연구원 광물자원연구본부
2과학기술연합대학원대학교 물리탐사공학과
* Corresponding Author
30 April 2019. pp. 129-139
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Abstract

Recently, the necessity of a DC resistivity survey for deeper parts has increased for the purpose of locating mineral resources and investigating earthquakes and volcanic activities. Accordingly, we developed and verified a distributed acquisition system to implement efficient deep DC resistivity surveys. The main features of our system adopting state of the art of electric and electronic technologies are described as follows: 1) high-power transmission and high-precision measurement is possible; 2) broad functional implementation by firmware programming guarantees the scalability and applicability for various geophysical high-precision measurements; and 3) it has high efficiency and maintainability in field operations due to its small size, light weight, modular design, and low power consumption. The system was verified through comparison with a commercial system under the same conditions along the 480-m survey line. After the verification, a large-scale survey was successfully carried out along the 4-km survey line at Mt. Taebaek.

Keywords
Distributed acquisition system
deep dc resistivity survey
Taebaek

최근 심부 광물자원 및 지진, 화산과 같은 심부 지각 활동에 대한 정보를 얻기 위한 심부 전기탐사의 적용성이 검토되고 있다. 이에 이 연구에서는 고효율 심부 전기탐사를 실현하기 위한 분산계측 시스템을 개발하고 검증하였다. 최신 전기전자 기술을 도입하여 개발된 이 시스템은 다음과 같은 특징을 갖는다: 1) 대전력 송신과 수신기에서의 고정밀 계측이 가능하다; 2) 펌웨어 프로그래밍을 통한 시스템 동작의 허용범위가 높아 기능 개선 및 추가가 용이하여 전기탐사 이외의 다양한 정밀 계측 응용에 적용이 가능하다; 3) 작고 가벼운 외형 및 저전력, 모듈화 설계로 현장 운용 시 우수한 효율성과 유지보수성을 확보하였다. 개발 시스템의 검증을 위해 우선 전라북도 부안군 일대에서 480m 측선을 설치 후 일선현장에서 보편화되어 운용되고 있는 상용 중앙집중형 전기탐사 시스템과 동일 조건에서의 비교실험을 하였고, 이 후 심부 전기탐사의 적용가능성을 확인하기 위해 험준한 태백산 지역의 4km 측선에서 탐사를 하여 효율적인 탐사가 가능함을 확인하였다.

키워드
분산계측 시스템
심부 전기탐사
태백
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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 :129-139
  • Received Date : 2019-03-25
  • Revised Date : 2019-04-16
  • Accepted Date : 2019-04-29
  • DOI :https://doi.org/10.32390/ksmer.2019.56.2.129
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