Browse > Article
http://dx.doi.org/10.9711/KTAJ.2012.14.5.503

A study on correlation between electrical resistivity obtained from electrical resistivity logging and rock mass rating in-situ tunnelling site  

Lee, Kang-Hyun (고려대학교 건축사회환경공학부)
Seo, Hyung-Joon (고려대학교 건축사회환경공학부)
Park, Jin-Ho (고려대학교 건축사회환경공학부)
Ahn, Hee-Yoon ((주)희송지오텍)
Kim, Ki-Seog ((주)희송지오텍)
Lee, In-Mo (고려대학교 건축사회환경공학부)
Publication Information
Journal of Korean Tunnelling and Underground Space Association / v.14, no.5, 2012 , pp. 503-516 More about this Journal
Abstract
Rock mass rating (RMR) is the key factor when designing the appropriate support pattern of tunnel projects. Borehole drilling is usually performed along the tunnel route in order to determine the rock mass rating to be used for tunnel design. The rock mass rating at the non-boring region between boreholes is usually assessed through geophysical surveys such as electrical prospecting, seismic prospecting, etc. Many studies were carried out to find out the correlation between electrical resistivity and rock mass rating. However, most researches were aimed at obtaining the relationship between the two parameters utilizing experimental results obtained from laboratory tests or electrical prospectings. In this paper, efforts were made to analyze and obtain relationships between the electrical resistivity obtained from in-situ electrical resistivity logging data and the rock mass rating. Correlation studies using field data showed that the electrical resistivity is highly correlated with the rock mass rating with the determination coefficient more than 90%. The correlation analysis was also carried out between RMR classification parameters and the electrical resistivity. It was shown that the correlation between the condition of discontinuities and the electrical resistivity was very high with the determination coefficient more than 80%; that between the groundwater condition and the electrical resistivity was very low with the determination coefficient less than 57%.
Keywords
Rock mass rating; electrical resistivity; electrical resistivity logging;
Citations & Related Records
연도 인용수 순위
  • Reference
1 한국지구물리탐사학회 (2002), 토목.환경 분야 적용을 위한 물리탐사 실무 지침, 한국지구물리탐사학회, pp. 193-201.
2 Bienniawski, Z.T. (1989) "Engineering rock mass classification", Wiley, New York
3 유광호, 이상호, 추석연, 주광수 (2004), "터널 중심선으로부터 이격된 자료를 활용한 미시추구간의 암반 등급 산정에 관한 연구", 한국터널공학회 논문집, 제6권, 제2호, pp. 101-111.
4 오석훈, 서백수 (2007), "탄성파 속도와 전기비저항 자료의 지구통계학적 복합해석에 의한 암반등급의 확률적 평가", 물리탐사, 제10권, 제4호, pp. 293-298.
5 이인모 (2001), 암반역학의 원리, 새론출판사, 서울, pp. 222-240.
6 최재화, 조철현, 류동우, 김훈, 오병삼, 강문구, 서백수 (2003), "전기비저항 탐사결과와 터널막장 암반분류의 상관성 검토", 터널과 지하공간, 제13권, 제4호, pp. 279-286.
7 권형석, 신중호, 황세호, 백환조, 김기석, 김종수 (2001), "전기비저항과 암반등급의 상관관계에 대한 고찰", 한국지반공학회 봄 학술발표대회 논문집, 서울, pp. 81-88
8 권형석, 황세호, 백환조, 김기석 (2008), "전기비저항과 암반분류의 상관관계에 대한 고찰", 지구물리와 물리탐사, 제11권, 제4호, pp. 350-360.
9 박삼규, 김정호, 조성준, 이명종, 손정술 (2003), "전기비저항 및 탄성파속도를 이용한 터널암반의 정량적 평가수법과 적용성", 한국터널공학회 논문집, 제5권, 제3호, pp. 291-299.
10 안희윤, 정재형, 조인기, 김정호, 배규진 (2008), "터널 굴착에 따른 전기비저항 모니터링 기술 적용", 한국터널공학회 논문집, 제10권, 제4호, pp. 405-420.