Jurnal Rekayasa Geofisika Indonesia
Vol. 7 No. 02 (2025): Edisi Agustus JRGI (Jurnal Rekayasa Geofisika Indonesia)

Analisis Geoteknik untuk Mengurangi Potensi Bencana Longsor di Area Tambang Nikel, Kecamatan Langgikima

Muhammad Ilham Kadar Ilham (Universitas Halu Oleo)
La Ode Andimbara (Jurusan Teknik Geofisika, Universitas Halu Oleo)
Al Rubaiyn (Jurusan Teknik Geofisika, Universitas Halu Oleo)
La Ode Dzakir (Program Studi Teknik Pertambangan, Universitas Sembilanbelas November Kolaka)
Muh Karnoha Amir (Program studi Teknik Pertambangan Universitas Sulawesi Teanggara)



Article Info

Publish Date
30 Jul 2025

Abstract

Landslides that commonly occur in nickel mining are caused by the absence of geotechnical studies conducted by the company. Based on the importance of this issue, this study was carried out to mitigate potential landslides in the mining slope area. The objective of this research is to determine the physical and mechanical characteristics of laterite soil, recommend a stable slope design, and establish an optimal factor of safety for practical implementation. The results of this study indicate that the soil material in the limonite zone has a density of 12.65 kN/m³, cohesion of 22.55 kN/m², and an internal shear angle of 30.58˚, while the soil material in the saprolite zone has a density of 12.55 kN/m³, cohesion of 12.75 kN/m², and an internal shear angle of 28.34 ˚. The recommended overall slope design to ensure slope stability and prevent landslides includes a slope height of ≤ 45 m, a bench width of ≥ 60 m, and an overall slope angle of ≤ 37º. Additionally, the recommended factor of safety for overall slope stability is ≥ 1.1, with a landslide probability of 7.80%

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Journal Info

Abbrev

journal

Publisher

Subject

Computer Science & IT Earth & Planetary Sciences Engineering Physics

Description

JRGI (Jurnal Rekayasa Geofisika Indonesia) merupakan jurnal ilmiah yang memuat hasil-hasil penelitian yang mencakup kajian teoretik, simulasi dan modeling, eksperimen, rekayasa dan eksplorasi dalam bidang Geofisika dan Aplikasinya. Bidang-bidang yang masuk dalam ruang lungkup jurnal ini adalah: ...