Penentuan Kelas Massa Batuan Menggunakan Metode Rock Mass Rating pada Lereng di Kecamatan Walenrang, Kabupaten Luwu, Sulawesi Selatan

Apriadi Saputra, Zeffitni Zeffitni, Deno Ambar Arum, Djamal Adi Nugroho Uno, Risqa Permatasyara Mumin

Abstract


This study aims to analyze slope stability in Walenrang District, Luwu Regency, South Sulawesi, using the Rock Mass Rating (RMR) method. The research area lies along the Walenrang–Toraja main route, which is composed of volcanic and sedimentary rocks affected by an intensive joint system. Field investigations were conducted using the scanline method to obtain geotechnical parameters such as unconfined compressive strength (UCS), Rock Quality Designation (RQD), discontinuity spacing and condition, and groundwater condition. Based on Schmidt Hammer test results, the rock’s compressive strength was 64 MPa with an RQD value of 97%, indicating excellent rock quality. The weighting of six key parameters produced an RMR value of 69, classifying the rock mass as Class II (good rock). This finding indicates that the slopes at the research location are still in good condition.


Keywords


Slope Stability; Rock Mass Rating (RMR); Walenrang

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References


Bieniawski, Z. T. (1989). Engineering Rock Mass Classifications: A Complete Manual for Engineers and Geologists in Mining, Civil, and Petroleum Engineering. Wiley.

Cakrabuana W. (2024). Andesite Slope Stability Analysis Using Rock Mass Rating (RMR) and Slope Mass Rating (SMR) in Gunung Batu and Graha Puspa Areas, West Bandung Regency, West Java, Indonesia.

Deere, D. U., & Miller, R. P. (1966). Engineering classification and index properties for intact rock. Urbana, Illinois: University of Illinois, Department of Civil Engineering.

Hudson, J. A., & Harrison, J. P. (1997). Engineering rock mechanics: An introduction to the principles. Oxford: Pergamon Press.

Pangaribuan, M. P., & Retongga, N. (2022). Analisis Kestabilan Lereng Menggunakan Metode Rock Mass Rating (RMR) dan Slope Mass Rating (SMR) untuk Menentukan Faktor Keamanan Lereng Pada Tambang Tuf Desa Candirejo, Kecamatan Semin, Kabupaten Gunungkidul, DIY. Jurnal Geosains dan Teknologi. Universitas Diponegoro.

Rahmah, N. F., Mirza, D., & Koesnaryo. (2024). Rock Mass Classification and Probability of Failure in Determining Slope Stability. Mining Technology Journal.

Rai, M. A,, Suseno K. & Ridho, K. W., 2014. Mekanika Batuan. ITB Press; Bandung.

Saptono, S., Yulianto, M. R., Vergiagara, V., & Sofyan, H. (2023). Rock Mass Rating and Geological Strength Index of Rock Masses of Indonesia Coal Mining Areas. Seminar Nasional Informatika (SEMNASIF).

Saputra, A. (2023). Kemantapan Penyangga pada lubang bukaan end portal PLTA Kerinci Merangin Provinsi Jambi. Makassar. Unhas.

Sulistyanto, B. (2011). Geologi dan Studi Mineralisasi Bijih Daerah Siteba dan Sekitarnya, Kecamatan Walenrang Utara, Kabupaten Luwu, Provinsi Sulawesi Selatan. Skripsi, UPN “Veteran” Yogyakarta.

Wulandari, A., & Umar, H. (2022). Analisis Kestabilan Lereng dengan Menggunakan Metode Rock Mass Rating dan Slope Mass Rating pada Tambang Batupasir di Samarinda Seberang, Kota Samarinda, Kalimantan Timur. Jurnal Teknologi Mineral FT UNMUL.




DOI: https://doi.org/10.37905/jrpi.v2i4.35317

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