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All Journal Jambura Geoscience Review PESHUM Jurnal Riset dan Pengabdian Interdisipliner
Arum, Deno Ambar
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Analysis Slope Stability Using RMR and SMR Method in Nupaomba Area Tanantovea Donggala Uno, Djamal Adi Nugroho; Uno, Irianto; Saputra, Apriadi; Arum, Deno Ambar; Mumin, Riqa Permatasyara; Alfaed, Moh Rizky Fadel
Jambura Geoscience Review Vol 7, No 1 (2025): Jambura Geoscience Review (JGEOSREV)
Publisher : Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37905/jgeosrev.v7i1.30388

Abstract

Landslide disasters frequently occur in the Nupabomba area due to its steep slopes and its role as a primary access road for the local community. This study aims to analyze slope stability using the Rock Mass Rating (RMR) and Slope Mass Rating (SMR) methods to assess the potential for landslides. The research was conducted at coordinates (Universal Transverse Mercator) UTM 829117.90 – 831853.89 mE and 9920980.82 – 9920308.34 mS. Data collection involved field measurements using the scanline method, focusing on discontinuities, lithology, and rock strength. The results indicate that at Station 01, the slope consists of slate rock with an RQD value of 70% and UCS of 23 MPa. The calculated RMR value is 58, placing it into Class III (fair rock), with an SMR value of 55.4, indicating partially stable conditions. Meanwhile, at Station 02, the slope consists of phyllite rock with an RQD value of 70% and UCS of 52 MPa. The RMR value is 62, classifying it as Class II (good rock), and the SMR value is 61.6, indicating a stable condition. These findings provide crucial insights into the geotechnical characteristics of the area, which are essential for landslide risk mitigation and infrastructure planning. The study highlights the need for continuous monitoring and possible reinforcement strategies, particularly in areas categorized as partially stable. Further research incorporating geotechnical modeling and additional stability analysis is recommended to enhance slope stability predictions and inform mitigation strategies.
Sumber Daya Pasir Silika di Capkala Kabupaten Bengkayang Kalimantan Barat Khalik, Ikdham Nurul; Arum, Deno Ambar; Uno, Djamal Adi Nugroho
PESHUM : Jurnal Pendidikan, Sosial dan Humaniora Vol. 4 No. 3: April 2025
Publisher : CV. Ulil Albab Corp

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56799/peshum.v4i3.9356

Abstract

Kajian ini menyajikan eksplorasi awal endapan pasir silika di Kecamatan Capkala dan Sungai Raya, Kabupaten Bengkayang, Kalimantan Barat. Meliputi area seluas sekitar 700 hektar, penyelidikan ini melibatkan survei lapangan, pengambilan sampel, dan pembuatan blok model dengan menggunakan aplikasi surpac untuk menentukan potensi sumber daya pasir silika. Temuan menunjukkan estimasi sumber daya tersirat sebesar 35,6 juta m³, dengan kualitas pasir yang bervariasi yang dipengaruhi oleh pengotor seperti oksida besi dan bahan organik. Kajian ini menyoroti perlunya eksplorasi lebih lanjut yang lebih rinci untuk mendukung pemanfaatan sumber daya secara efisien.
Simulasi Tanggap Bencana Melalui Sosialisai Kebencanaan Dan Pengenalan Ilmu Kebumian Di SMP Negeri 19 Kota Palu Arum, Deno Ambar; Saputra, Apriadi; Permatasyara M, Risqa; Uno, Djamal Adi Nugroho
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Publisher : Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37905/jrpi.v2i3.32271

Abstract

Indonesia is highly vulnerable to geological disasters, especially earthquakes and secondary hazards, due to its location at tectonic plate boundaries and active faults. However, junior high school students’ understanding of earth science and disaster mitigation remains low. This community service project aimed to enhance disaster literacy through interactive socialization at SMP Negeri 19 Palu (high-risk earthquake area). Methods included lectures, group discussions, educational videos, and disaster response simulations, focusing on earth science fundamentals (earth structure, rocks, geological processes) and mitigation measures for earthquakes, tsunamis, and liquefaction. Participants were Grade VIII students, selected for their potential as agents of change. Results demonstrated increased disaster awareness, mitigation knowledge, and interest in earth science. The activity fostered early disaster preparedness culture and established university-school partnerships, supporting education-based disaster risk reduction programs. Positive feedback from students and the school confirmed the effectiveness of the communicative approach.
Penentuan Kelas Massa Batuan Menggunakan Metode Rock Mass Rating pada Lereng di Kecamatan Walenrang, Kabupaten Luwu, Sulawesi Selatan Saputra, Apriadi; Zeffitni, Zeffitni; Arum, Deno Ambar; Uno, Djamal Adi Nugroho; Mumin, Risqa Permatasyara
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Publisher : Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37905/jrpi.v2i4.35317

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.
Co-Authors Alfaed, Moh Rizky Fadel Apriadi Saputra Djamal Adi Nugroho Uno Irianto Uno Khalik, Ikdham Nurul Mumin, Riqa Permatasyara Mumin, Risqa Permatasyara Permatasyara M, Risqa Zeffitni Zeffitni