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Journal : Journal La Multiapp

Evaluation of Slope Stability in Mining Areas Using the Morgenstern Price Method Haeriska, Haeriska; Chaerul, Muhammad; Desi, Natsar; Harun, A. Muh. Yusuf; Erniati, Erniati; Marzuki, Ismail
Journal La Multiapp Vol. 6 No. 6 (2025): Journal La Multiapp
Publisher : Newinera Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37899/journallamultiapp.v6i6.2540

Abstract

Indonesia’s mining sector, particularly in areas like Morowali Regency, Central Sulawesi, faces significant geotechnical challenges due to its location in the Pacific Ring of Fire. One of the key concerns in open-pit mining operations is slope instability, which can lead to landslides, threaten worker safety, damage infrastructure, and disrupt production. This study evaluates the slope stability in the Sambalagi site of PT. Wosindo Berkat Abadi using the Morgenstern-Price method, a limit equilibrium approach known for its accuracy in heterogeneous slope conditions. Field data were collected, including slope geometry, geological conditions, material strength, and hydrogeological factors. The safety factor (FK) was calculated based on geotechnical parameters such as cohesion, internal friction angle, and unit weight of the slope materials primarily saprolite and limonite. The actual slope FK value at PIT D was found to be 0.974, below the standard requirement (≥1.3) set by the Ministerial Decree No. 1827K/30/MEM/2018. To improve stability, a revised slope design was proposed, including reducing slope angles to 35°, increasing bench widths to 2 meters, and decreasing slope height per bench to 4 meters. The simulation of this revised geometry showed that it could achieve the required FK value. The study contributes to safer and more efficient mine planning by demonstrating the importance of integrating detailed geotechnical analysis in slope design, especially in tropical high-rainfall mining regions.
Co-Authors 'Akla, C. M. N. A, Salimin Abdul Malik Abu Bakar Tumpu Ainun, Asri Aulia Alannasir, wahyullah Amrullah Amrullah Andi Alim, Andi Andi Anirah Andi Mappatompo Andi Nurul Hidayat Andika Syahputra, Andika Andika, Yudho Aprilita, T. Salsa Arbain Tata Ardiansyah, A. Ariefin, Moch. Irsyad Arini Junaeny Arlin Adam, Arlin Ashraf, Ashraf Asrianto, La Ode Astarina, Wa Ode Fina Ayu Andira Baru, La Basire, Jumri Hi. Tahang Chindra, Chindra Cut Meurah Nurul ‘Akla Daulay, Anggi Mayulina Dede Robiatul Adawiyah Desi, Natsar Dila, Nuriana Dirman, Eris Nur Dwi Syukriady Eka Nurindah, Sari Eko Susanto Endang Prangdimurti Erlangga Erlangga Ermawati Ermawati Erwin Nurdiansyah Fatimah Saguni Fatmeriany, Fatmeriany FRANSISKA RUNGKAT ZAKARIA Gunawan, Suwardi Gusnarib, Gusnarib Gusty, Sri Haeriska, Haeriska Hamri, Amar Ma’ruf Handayani, Meutia Harun, A. Muh. Yusuf Harun, Muh. A. Yusuf Hasiu, Teti Susliyanti Hasmar, Hasmar Hattu, Edwin P. Ibrahim, Muhammad Rivani Idhan, Mohamad Imamshadiqin, Imamshadiqin Imanullah, Imanullah Indrayani, Popy Indriani, Shinta Ira Diana, Ira Irmayunita, Irmayunita Islamiyah Islamiyah, Islamiyah Islamiyyah, Islamiyyah Ismail Marzuki Jamilah Jamilah Jumri Hi Thahang Basir Jumriati, Jumriati Kaddas, Badruddin Kamridah Karmawati Karmawati Lapinangga, Nina J. Laumal, Folkes E. Lazuardi, Rafly Mahdaliana, Mahdaliana Marfudin, Marfudin Marisa Khairina, Dyna Maslan, Maslan Masyithah, Putri Mataniari, Azhari Maulana, Sanja Mauliyani, Mauliyani Miftakhul Huda Misbahul Jannah Mistiani, Wiwin Mohammad Djamil M Nur Mudarsep, Mudarsep Muhammad Chaerul Mukhlis Mukhlis Muliani Muliani, Muliani Muliari Muliari Munawwar Khalil, Munawwar Musakkar, Mustika Eka Pratama Muttaqin, Kunkun Zainal Nadya Humairah Ramadhany Nafila Naima Naima Nazroi, Arkom Neliana, Neliana Nur Hikmah Nurdin Nurdin Nurfadillah Rahman Nurfatia Nurfatia Nurhidayanti, Nurhidayanti Nursyam Nursyam Pakalessy, Aisa Parida, Parida Polnaya, Fransin Prama Hartami Pramita, Susi Prasetyo, Repki Pratama, Arkandithya Naufal Pratiwi, Bengi Putra, M. Afif Tri Putri, Herwina Rahayu R. Sapto Hendri Boedi Soesatyo Rachmawati Rusydi, Rachmawati Rae Shella Tivani, Mareta Rahma Ashari Hamzah Rahmad Rahmad Rahmadian, Alfina Wahyu Rahman, Arif Didi Rahmawati, Rahmawati Ramadansyah, Syahrul Reni, Wa Ode Retoliah Retoliah Rimawati, Rimawati Riri Ezraneti Ritnawaty, Ritnawaty Ritonga, Gara Hasonangan Rizalul Fikri, Rizalul Rizka Amalia Rizky Kurniawan Romadhoni, Buyung Room, Rusdi Rusdin Rusdin Ruzanna, Arina S, Herawati Arief Safrudin Safrudin Sagaf S. Pettalongi Sagir Muhammad Amin Saiful Adhar Salahuddin Salahuddin Sanjoko, Yohanis Satya Putra, Muhammad Yulianda Selvi, Nurhayati Sinaini, La Sitanggang, Hizrah Ayumi Sitti Nadirah Sri Hastati Sucahyo, Lilis Suhaila, Nurul Suharnis, Suharnis Suhasni, Suhasni sulkarnain, sulkarnain Supriadi Supriadi Supriyanto Supriyanto SYAHRIAL SYAHRIAL Syam, Syamsinar Syamsiar, Syamsiar Syukriadi, Dwi Tasya, Tasya Tauladan, Toha Ali Ubadah Ubadah, Ubadah Ubay Harun Unggul Wahyono Wahyuni, Elvi Walsen, Anthony Wijaya, Dendi Yulistia, Elva Dwi Zulpikar, Zulpikar