Abstract
Abstract Forest roads failure is one of the most common problems caused by heavy rainfalls. This study investigated the characteristics on stabilization measures installed for cutting slopes failure of forest road resulted from heavy rainfalls. Three primary factors (slope length, slope gradient, soil type) affecting cutting slope failure were considered and stabilization measures were classified into two types (A type: wooden fence, vegetation sandbag, stone masonry; B type: wire cylinder, gabion, concrete retaining wall) through discriminant analysis based on their capacity of resistance to slope failure. Results showed that A type was mainly installed in such conditions as cut slope ＜8 m, cut slope gradient 30-40 o and soil type with soil while B type occurred in locational conditions as cut slope length ＞8 m, cut slope gradient ＜30 o and ＞40 o , and soil type of gravelly soil and rock.Key Words: forest road, stabilization measure, slope failure, cut slope Received: February 7, 2014. Revised: February 11, 2014. Accepte d: February 11, 2014.Corresponding author: Du-Song ChaDepartment of Forest Management, College of Forest & Environmen tal Sciences, Kangwon National University, Chuncheon 200-701, R epublic of KoreaTel: 82-33-250-8336, Fax: 82-33-250-5617, E-mail: dscha@kangwon .ac.kr
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