Adelia Tri Jayanti, Nim.112021034 (2025) ANALISIS GEOTEKNIK STABILITAS LERENG AKIBAT REMBESAN WATERFILL DAN RENCANA PENANGANAN LONGSOR PADA AREA A TAMBANG BATU BARA KABUPATEN LAHAT. Skripsi thesis, Universitas Muhammadiyah Palembang.

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Abstract

Slope stability analysis is a critical aspect of geotechnical engineering planning aimed at preventing landslides that may endanger infrastructure and human safety. This study utilizes PLAXIS software as a numerical modeling tool based on the Finite Element Method (FEM) to evaluate slope stability under actual field conditions. Soil parameters were obtained through empirical correlations from field and laboratory test results, including N-SPT values, unit weight, permeability, and shear strength parameters (cohesion and internal friction angle). The modeling process involves several stages: project data input, cross-sectional geometry setup, boundary condition definition, load application, and calculation phase to obtain the safety factor (SF). The results show that PLAXIS can not only illustrate stress distribution and deformation within the soil but also display the forces acting on structural elements and generate curves describing the relationship between load, time, and displacement. Therefore, PLAXIS is an effective and comprehensive tool for evaluating slope stability and designing suitable reinforcement systems. The slope stability analysis of the original condition resulted in an SF of 1.048, indicating that the slope is still in a critical state and requires reinforcement. For this purpose, a slope reinforcement plan was developed. The reinforcement alternatives considered in this study include the use of gabions, geotextiles, geotubes, and selected fill soil. In the first variation, the design involved 12 geotubes combined with selected fill soil, resulting in a safety factor of 1.343, which is still below the required minimum of 1.5. In the second variation, the design included 6 geotubes, 19 layers of gabions, geotextiles, and selected fill soil, producing an SF of 1.747, which exceeds the minimum required value. Thus, the second variation successfully meets the safety standard for slope stability.

Item Type:	Thesis (Skripsi)
Additional Information:	1.Muhammad Arfan,S.T.,M,T. 2.Dr.Verinazul Septriansyah,S.T,.M.T
Uncontrolled Keywords:	Slope Stability, PLAXIS, Finite Element Method, Safety Factor, Slope Reinforcement, Geotube, Gabion, Geotextile.
Subjects:	Teknik Sipil > Teknik Fondasi Teknik Sipil > geologi teknis (untuk teknik sipil)
Divisions:	Fakultas Teknik > Teknik Sipil (S1)
Depositing User:	Mahasiswa Fakultas Teknik
Date Deposited:	06 Sep 2025 06:16
Last Modified:	06 Sep 2025 06:16
URI:	http://repository.um-palembang.ac.id/id/eprint/32962

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