抄録
This paper presents rock mass classification technique by resistivity-based high-density prospecting data in the mountain tunnel. In the proposed technique, seismic wave velocity based on resistivity is converted by using the theoretical relation between electical resistivity and seismic wave velocity which is the function of porosity. The authors carry out rock mass classification by quantitative evaluation of ground resistivity basing on resistivity measurement results of cores collected on cutting face of roadway tunnel site. Furthermore, the applicability of the proposed technique is discussed, by comparing estimated support patterns with actually performed ones.