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Geostatistical Integration of Seismic Velocity and Resistivity Data for Probabilistic Evaluation of Rock Quality  

Oh, Seok-Hoon (Dept. Geosystem Engineering, Kangwon National University)
Suh, Baek-Soo (Dept. Geosystem Engineering, Kangwon National University)
Publication Information
Geophysics and Geophysical Exploration / v.10, no.4, 2007 , pp. 293-298 More about this Journal
Abstract
A new way to integrate various geophysical information for evaluation of RQD was developed. In this study, we does not directly define the RQD value where borehole data are not sampled. Instead, we infer the probability of RQD values with prior probability of data directly obtained from borehole, and secondary supporting probability from resistivity and seismic tomography data. First, we applied the geostatstical indicator kriging to get prior probability of RQD value, and indicator kriging with soft data to get the supporting probability from resistivity and seismic data. And we finally applied the permanence ratio rule to integrate these information. The finally obtained result was also analyzed to fully utilize the probabilistic features. For example, we showed the probability of wrongly classifying the RQD evaluation and vice versa. This kind of analytical result may be used for decision making process based on the geophysical exploration.
Keywords
integration; resistivity; seismic velocity; permanence ratio; RQD; decision making; geostatistics;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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