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A Study on the Quantified Criteria in Determining the Geostructural Domain of Fractured Rock Mass  

Um Jeong-Gi (부경대학교 환경탐사공학과)
Cho Taechin (부경대학교 환경탐사공학과)
Kwon Soon Jin (대한광업진흥공사)
Publication Information
Tunnel and Underground Space / v.16, no.1, 2006 , pp. 26-37 More about this Journal
Abstract
This study addresses the applicability of box fractal dimension, $D_B$, as an index of statistical homogeneity of fractured rock mass. The box-count method's capability in quantifying the combined effect of fracture density and size distribution is examined systematically. Total of 129 two-dimensional fracture configurations were generated based on different combinations of fracture size distribution and fracture density. $D_B$was calculated for the generated fracture network systems using the box-counting method. It was found that was standard deviation of trace length and fracture orientation have no effect on calculated $D_B$. The estimated $D_B$ was found to increase with increasing total density and/or mean trace length. To explore the field applicability of this study, the statistical homogeneity of fractured rock mass was investigated at the rock slope and the underground facility using the box-counting method as well as conventional contingency table analysis. The results obtained in this study clearly show that the methodologies given in this paper have the capability of determining the statistical homogeneity of fractured rock mass.
Keywords
Statistical homogeneity; Box fractal; Contingency table; Fractured rock mass; Geostructural domain;
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