Perencanaan Perkuatan Lereng Dengan Geocell Pada Akses Jalan Menuju Wisata Taman Gandrung Terakota Kabupaten Banyuwangi

Abstract

The landslide that occurred on the access road to Gandrung Terakota Park caused almost the entire road body to be eroded by the landslide, and as a result of this landslide, the mobility of residents and tourists was disrupted. Based on the problem, it is necessary to plan reinforcement using geocells, which are expected to provide effective reinforcement, so that the access road can function as before and no landslides occur in the future. Slope stability analysis was conducted using the Geoslope program. The results of the slope stability analysis on the existing condition of the slope after the landslide obtained a safety factor value of 1,175; this means that the slope is in critical condition and dangerous to landslides. Slope reinforcement planning was carried out three times with geocells and one time using a combination of geocells and piles. Geocell planning on the slope starts at a depth of 9,6 meters with the same slope of 57° in a multilevel arrangement. Modeling 1 uses geocell lengths of 1,5 meters and 4 meters. Modeling 2 uses geocell lengths of 1,5 meters and 5 meters. Model 3 uses geocell lengths of 1,5 meters and 6 meters. Model 4 uses a geocell length of 1,5 meters and 6 meters, with an additional pile using a length of 6 meters. The slope stability condition after reinforcement produces different safety factor values in each model. Modeling 1 produces a safety factor value of 0,783. Modeling 2 produces a safety factor value of 0,912. Modeling 3 produces a safety factor value of 1,027. Modeling 4 produces a safety factor value of 1,533. Reinforcement using a combination of geocells and piles means that the condition is safe based on the required value in SNI 8460 2017.