Analisis Stabilitas Lereng Tambang Nikel Kabupaten Morowali
DOI:
https://doi.org/10.22487/renstra.v5i1.654Keywords:
slope stability, nickel mine, morowali regency, finite element methodAbstract
Central Sulawesi Province is a province that has quite high mining activities, so an evaluation of the stability of open pit slope excavations needs to be carried out to prevent collapses during the exploration process which could result in loss of life. Analysis using the finite element method is one method that can be used to analyze slope deformation and stability during the excavation process. This research simulates excavation of a mine slope in 4 stages with a height of 5 m and a slope of 500. The analysis was carried out based on the results of the N-SPT test at three locations (GT-15617, GT-19125 and GT-19841) which are the slopes with the most extreme slopes. The analysis results show that at GT-15617 the maximum deformation occurred at stage 4 of the excavation at 0.18 m with a safety factor of 1.43, the maximum deformation at the GT-19125 location occurred at stage 4 at 0.21 m with a safety factor of 1.26 and at location GT-19841 maximum deformation occurred at stage 4 of 0.21 with a safety factor of 1.21. The overall safety factor analysis results do not meet the required minimum safety factor criteria.
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References
https://geoportal.esdm.go.id/minerba/. (Diakses 20 September 2021).
H. Amankwah, Mathematical Optimization Models and Methods for Open-Pit Mining, Sweden: Linköping University Electronic Press, 2011.
D. Subowo, “Penambangan Sistem Terbuka Ramah Lingkungan dan Upaya Reklamasi Pasca Tambang Untuk Memperbaiki Kualitas Sumberdaya Lahan dan Hayati Tanah”, Jurnal Teknik Sipil, vol. 5, no. 5, p. 83, 2011.
L. Lu, Z. Wang, X. Huang, B. Zheng, and K. Arai “Dynamic and Static Combination Analysis Method of Slope Stability Analysis during Earthquake”, Mathematical Problem in Engineering, vol. 14, p. 1, 2014.
B. Suhendro, Metode Elemen Hingga dan Aplikasinya, Yogyakarta: Teknik Sipil - UGM. 2000.
E. Dawson, K. You, and Y. Park, “Strength-Reduction Stability Analysis of Rock Slopes Using the Hoek Brown Failure Criterion”, Trends in Rock Mechanics, vol. 126, p. 65, 2000.
R. Hammah, T. Yacoub, B. Corkum, and J. Curran, “The Shear Strength Reduction Method for the Generalized Hoek Brown Criterion Alaska”, Proceedings of the 40th U.S. Symposium on Rock, vo. 3, p. 1, 2005.
P.P. Rahardjo and S.D. Alvi, Metode Elemen Hingga Untuk Analisis Geoteknik, Bandung: Pusat Studi Geoteknik Universitas Katolik Parahyangan, 2019.
J. Bowles, Sifat-Sifat Fisis dan Geoteknis Tanah, Jakarta: Erlangga, 1989.
B.G. Look, Handbook of Geotechnical Investigation and Design Tables, London: Taylor&Francis, 2014.
M.H.A. Geologi dan Analisis Kestabilan Lereng pada Jalan Hauling Tambang Nikel Daerah Ganda Ganda, Kecamatan Petasia, Kabupaten Morowali Utara, Provinsi Sulawesi Tengah, Yogyakarta: Universitas Pembangunan Nasional Veteran, 2021.
SNI-8460:2017, Persyaratan Perancangan Geoteknik, Jakarta: Badan Standarisasi Nasional, 2017.
Sumiyanto and A.N. Patria, “Pengaruh Pembuatan Terasering pada Lereng Terhadap Potensi Longsor”, Dinamika Rekayasa, vol. 6, no. 2, p. 50, 2010.
Sukandi and N.P.E.L. Dewi, “Stabilitas dan Deformasi Lereng Villa Sekeq Grupuk Dengan Simulasi Numeris”, Konstruksia, vol. 12, no. 1, p. 115, 2021.
R. Rekzyanti, S. Balamba, and L. Manaroinsong, “Analisa Kestabilan Lereng Akibat Gempa”, Tekno, vol. 14, p. 66, 2016.
S. Pramusandi, A. Rifa’i, and K.B. Suryolelono, “Penentuan Sifat Teknis Tanah Jenuh Sebagian Dan Analisis Deformasi Lereng Akibat Pengaruh Variasi Hujan”’ Jurnal Poli-Teknologi, vol. 10, no. 1, p.1, 2011.
Setyanto, A. Zakaria, and P. Giwa, “Analisis Stabilitas Lereng dan Penanganan Longsoran Menggunakan Metode Elemen Hingga Plaxis V. 8.2 (Studi Kasus: Ruas Jalan Liwa–Simpang Gunung Kemala Sta. 263+ 650)”, Journal Rekayasa, vol. 20, no. 2, p. 119, 2016.
Sahrul and V. Astini, “Analisis Deformasi Lereng Menggunakan Metode Monitoring pada Lereng Jalan Trans Provinsi Kilometer 18 Kolaka Provinsi Sulawesi Tenggara”, Jurnal Geomine, vol. 7, no. 3, p.189, 2020.
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