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http://dx.doi.org/10.7474/TUS.2018.28.4.343

A Study for the Optimum Joint Set Orientations and Its Application to Slope Analysis  

Cho, Taechin (Department of Energy Resources Engineering, PUKYONG National University)
Publication Information
Tunnel and Underground Space / v.28, no.4, 2018 , pp. 343-357 More about this Journal
Abstract
Algorithm which can analyze the slope failure behavior utilizing the comprehensive information of the dense point of joint poles and the joint set orientations, both of which are obtained statistically, and the defect pattern of pole distribution has been developed. This method overcomes the potential incorrectness of the hemispheric projection method utilizing the joint set orientations only and also enhances the reliability of slope failure analysis. To this end a method capable of calculating the joint dispersion index directly from the joint pole distribution, instead of contour map, has been devised. The representative orientations for the slope failure analysis has been determined by considering the number and orientations of cone angle-dependent joint sets as well as the joint dispersion index. By engaging these representative orientations to the hemispheric projection analysis more reliable slope failure examination has been carried out. Sensitivity analysis for the potentially unstable slope of plane failure mode has been performed. Significance of joint strength index and the external seismic loading on the slope stability has been fully analyzed.
Keywords
Dense point; Defect pattern; Hemispheric project method; Joint dispersion index; Cone angle; Slope stability;
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