A tunnel rock mass classification technique and its applicability using electrical resistivity and seismic wave velocity

Sam-Gyu Park; Jung-Ho Kim; Seong-Jun Cho; Myeong-Jong Yi; Jeong-Sul Son

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2003 Vol.5, Issue 3 Preview Page

A tunnel rock mass classification technique and its applicability using electrical resistivity and seismic wave velocity 전기비저항 및 탄성파속도를 이용한 터널암반의 정량적 평가수법과 적용성

30 September 2003. pp. 291-300

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Abstract

Electrical resistivity prospecting has been recently increased in the application to tunnel, landslide and other investigations in the civil engineering field. Therefore, it is essential to establish the rock mass classification technique using electrical resistivity data. In this paper, the authors, try to propose a technique which can classify tunnel rock mass using seismic wave velocities derived from electrical resistivity data. In addition, the applicability of the proposed tunnel rock mass classification technique is discussed, by comparing estimated support patterns with actually performed ones.

Keywords

Electrical resistivity

seismic wave velocity

tunnel

rock mass classification

최근 산악터널의 지반조사에 전기 및 전자탐사를 실시하는 사례가 증가하고 있으며 지반의 전기비저항을 이용한 터널지반의 정량적 평가수법의 필요성이 요구되고 있다. 따라서 본 논문은 암석의 전기비저항과 탄성파속도가 각각 암석의 공극율과 밀접한 관계가 있는 것을 이용하여 지반의 전기비저항으로부터 탄성파속도를 환산하는 수법을 제안한다. 또 이 수법을 이용하여 실제터널에 있어서 지반의 전기비저항으로부터 탄성파속도를 환산하여 암반분류를 행하여 지보패턴을 설정하고 이를 실제 터널시공에 있어서 설정한 지보패턴과 비교함으로써 그 적용성을 검토한다.

키워드

전기비저항

탄성파속도

터널

암반분류

References

1. Archie, G. E. (1942), The electrical resistivity log as an aid in determining some reservoir charac-teristic. Trans, A.I.H.E., Vol. 146, pp. 54-67.

2. Bussian, A. E. (1983), Electrical conductance in a porous medium. Geophysics, Vol. 48, No. 9, pp.1258-1268.

3. Klein, D. J. and Sill, W. R. (1982), Electrical pro-perties of artificial clay-bearing sandstones. Geophysics, Vol. 47, pp. 1593-1601.

4. Patnode, G. E. and Wyllie, M. R. J. (1950), The presence of conductive solids in reservoir rocks as a factor in electric log interpretation. Trans, A.I.M.E., Vol. 189, pp. 47-52.

5. Park, S.G. and Matsui, T. (1998), Basic study on resistivity of rocks. Butsuri-Tansa, Vol. 51, No. 3, pp.201-209. (in Japanese)

6. Wyllie, M. R., Gregory, A. R. and Gardner, L.W. (1956), Elastic wave velocities in heterogeneous and porous media, Geophysics, Vol. 21, pp. 41-70.

7. 土木學會 (1986), トンネル標準示方書(山岳編)․同解說.

8. 土木學會編 (1987), トンネルにおける調査․計測の評價と利用.

Information

Publisher :Korean Tunneling and Underground Space Association
Publisher(Ko) :한국터널지하공간학회
Journal Title :Journal of Korean Tunnelling and Underground Space Association
Journal Title(Ko) :한국터널지하공간학회 논문집
Volume : 5
No :3
Pages :291-300

Journal of Korean Tunnelling and Underground Space Association ISSN:2233-8292(Print) 2287-4747(Online) 한국터널지하공간학회 논문집

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