Electrical resistivity-based rock mass classification for tunnelling

2006 ◽  
Vol 21 (3-4) ◽  
pp. 234 ◽  
Author(s):  
J.S. Choi ◽  
H.H. Ryu ◽  
G.C. Cho
Keyword(s):  
Electrical Resistivity ◽  
Rock Mass ◽  
Rock Mass Classification ◽  
Mass Classification

Rock Mass Classification Using Electrical Resistivity - an Analytical Study

2006 ◽  
Vol 321-323 ◽  
pp. 1411-1414 ◽  
Author(s):  
Jun Su Choi ◽  
Hee Hwan Ryu ◽  
In Mo Lee ◽  
Gye Chun Cho
Keyword(s):  
Electrical Resistivity ◽  
Rock Mass ◽  
Analytical Study ◽  
Rock Strength ◽  
Rock Mass Classification ◽  
Electrical Characteristics ◽  
Joint Spacing ◽  
Mass Classification ◽  
Theoretical Analyses ◽  
Q System

Geophysical prospecting using electrical resistivity is one of the principal methods for subsurface exploration. However, the majority of such application methods are restricted to coarse descriptions of underground conditions. The Q-system is commonly used as a representative rock mass classification system in modern rock engineering. In this paper, electrical resistivity is related to the Q-system through theoretical analyses. The analyses are based on Coulomb's law and Gauss' law considering electrical characteristics of constituent parameters for rock mass classification such as joint thickness, joint condition, joint spacing, intact rock strength, and RQD. The results show that there is a strong correlation between electrical resistivity and rock mass classification.

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