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Risk Assessment of the Road Cut Slopes in Gyeoungnam based on Multiple Regression Analysis  

Kang, Tae-Seung (GEO Eng, Co., Ltd)
Um, Jeong-Gi (Dept. of Environ. Explo. Engineering, Pukyong National University)
Publication Information
The Journal of Engineering Geology / v.17, no.3, 2007 , pp. 393-404 More about this Journal
Abstract
The purpose of this study is to capture the essentials in survey and evaluation scheme which are able to assess the hazard of a rock slope systematically. Statistical analysis are performed on slope instability parameters related to failure of the rock slope. As the slope instability parameters, twelve survey items are considered such as tension crack, surface deformation, deformation of retaining structures, volume of existing failures, angles between strike of discontinuity and strike of cut slope face, angles between dip of discontinuity and dip of cut slope face, discontinuity condition, cut slope angle, rainfall or ground water level, excavation condition, drainage condition, reinforcement. A total of 233 road cut slopes located in Gyeongnam were considered. The stability of the road cut slopes were evaluated by estimating the slope instability index(SII) and corresponding stability rank. 126 rock slopes were selected to analyze statistical relation between SII and slope instability parameters. The multiple regression analysis was applied to derive statistical models which are able to predict the SII and corresponding slope stability rank. Also, its applicability was explored to predict the slope failures using the variables of slope instability parameters. The results obtained in this study clearly show that the methodology given in this paper have strong capabilities to evaluate the failures of the road cut slope effectively.
Keywords
rock slope; slope evaluation system; contingency table analysis; multiple regression analysis;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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