WAWASAN TERHADAP PERILAKU LERENG: EVALUASI STABILITAS PADA STA 4+850 PROYEK JALUR PANSELA TRENGGALEK

Abstract

Trenggalek Pansela Project that connects with Tulungagung Regency through the southern route is dominated by steep hills. There are several points prone to landslides along the road that endanger road users. The slope has a height of 9.43 meters, a soil shear angle of 7 degrees, categorizing the soil as "very loose." The slope has a gradient of 45 degrees. Based on slope class classification, this slope falls into Class VI or highly steep category. Thus, based on these characteristics, the slope has a potential for landslides to occur. The stability analysis of the existing slope was manually performed using the Bishop method, yielding a factor of safety of 1.225, and using the Fellenius method, yielding a factor of safety of 1.213. Subsequently, a slope stability analysis was conducted using the Slope/W software, resulting in a factor of safety of 1.269 for the Bishop method and 1.257 for the Fellenius method.

Keywords: Soil Nailing, Slope Reinforcement, Geostudio Slope/W