Slope Stability Analysis Using the Slope Mass Rating (SMR) Method on Provincial Road Section, Kebumen Regency, Central Java Province, Indonesia
摘要
Road construction in mountainous areas has various challenges in the construction and maintenance stages. One of the hazards that is often found is landslides. Therefore, to ensure safety for users, it is necessary to study slope stability along the road. The research aims to evaluate the slope stability condition of the road section based on the slope mass rating (SMR) method. This research was conducted on a provincial road in Central Java, Indonesia. The SMR value is based on the rock mass quality values according to the rock mass rating (RMR) method and the weighting of adjustment factor values consisting of slope orientation, discontinuity orientation, and excavation method. The RMR values consist of uniaxial compressive strength (UCS), rock quality designation (RQD), discontinuity spacing, discontinuity condition, and groundwater condition. The results of rock mass quality according to the RMR method are divided into good (61–80), fair (41–60), and poor (21–40) qualities. In addition, slope stability analysis using the SMR method shows that the slope stability conditions on the road section are divided into stable (61–80), partially stable (41–60), and unstable (21–40) conditions. This paper describes the achievements and the current activities of the IPL-WCoE on Risk Management and Technological Innovation for Landslide Mitigation.