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All Journal Jurnal Ilmiah Teknik dan Sains (JITS) Manufaktur: Publikasi Sub Rumpun Ilmu Keteknikan Industri Venus: Jurnal Publikasi Rumpun Ilmu Teknik
Ridho Rizky Amanda
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Aerospace Engineering Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Engineering Mechanical Engineering

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Analisis Proksimat dan Ultimat Batubara Pada Sumur Bor AR_29 Kabupaten Muara Enim, Provinsi Sumatera Selatan Ridho Rizky Amanda
Jurnal Ilmiah Teknik dan Sains Vol. 3 No. 2 (2025): Desember: Jurnal Ilmiah Teknik dan Sains (JITS)
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat AKIPBA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62278/jits.v3i2.82

Abstract

Penelitian ini bertujuan untuk mengidentifikasi dan mengkarakterisasi parameter kualitas batubara pada tiga lapisan (Seam A, B, dan C) yang terpotong oleh sumur bor AR_29 di Kabupaten Muaraenim, Provinsi Sumatera Selatan, yang dikenal sebagai salah satu sentral penghasil batubara terbesar di Indonesia. Kualitas batubara ditentukan melalui analisis proksimat dan ultimat untuk mengukur Total Moisture (TM), Volatile Matter (VM), Fixed Carbon (FC), Ash Content (Ash), Total Sulfur (TS), dan Calorific Value (CV). Hasil analisis menunjukkan adanya hubungan yang saling berkaitan antara parameter kualitas dengan nilai kalor batubara. Ditemukan bahwa nilai Total Moisture (TM) , Volatile Matter (VM) , dan Ash Content (Ash) berbanding terbalik dengan nilai kalor (CV). Sebaliknya, Fixed Carbon (FC) dan Total Sulfur (TS) berbanding lurus dengan nilai kalor. Lapisan batubara Seam A memiliki kualitas terendah dengan nilai kalor 6395 kkal/kg. Hal ini disebabkan oleh kandungan TM (13,7%), VM (40,9%), dan Ash (5%) tertinggi, serta FC (44,2%) dan TS (0,23%) terendah. Sementara itu, lapisan Seam C memiliki kualitas terbaik dengan nilai kalor 6423 kkal/kg. Nilai kalor yang tinggi ini didukung oleh kandungan TM (10,4%), VM (38,7%), dan Ash (2,3%) yang paling rendah, serta kandungan FC (45,2%) dan TS (0,87%) yang paling tinggi. Perbedaan kualitas ini juga dapat dipengaruhi oleh faktor kedalaman lapisan batubara.
Studi Literatur Pengaruh Sesar Geologi terhadap Kestabilan Lereng Tambang Batubara di Indonesia Ridho Rizky Amanda
Venus: Jurnal Publikasi Rumpun Ilmu Teknik  Vol. 3 No. 5 (2025): Venus: Jurnal Publikasi Rumpun Ilmu Teknik
Publisher : Asosiasi Riset Ilmu Teknik Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61132/venus.v3i5.1195

Abstract

The stability of slopes in open-pit coal mining in Indonesia is significantly influenced by geological faults, which are a major factor causing slope failures. This study aims to examine the impact of faults on slope stability by conducting a systematic literature review of 25 scientific publications from 2018 to 2025. The results indicate that faults and fault zones consistently reduce rock mass integrity through several mechanisms, including stress concentration in weak zones, the formation of preferential sliding surfaces, amplification of hydro-mechanical effects from groundwater and rainfall, and the reduction of rock strength parameters. Case studies in Kalimantan and Sumatra confirm these mechanisms with slope failures aligning with fault orientations. Kinematic and numerical analyses using the Limit Equilibrium Method (LEM), Finite Element Method (FEM), and Distinct Element Method (DEM) show a reduction in the safety factor (SF) by up to 36% on slopes affected by faults. Practical recommendations include continuous monitoring using Slope Stability Radar (SSR), optimization of slope geometry with angles < 18° in fault zones, groundwater control, reinforcement with anchors and bolting, and UAV-based discontinuity mapping for hazard zoning. This study concludes that managing slopes in fault zones requires an integrated approach combining detailed geological investigation, multi-method numerical analysis, real-time monitoring, and specific mitigation design.
Analisis Kualitas Batubara pada Sumur Bor AR_10 di Kabupaten Muaraenim, Sumatera Selatan Ridho Rizky Amanda
Manufaktur: Publikasi Sub Rumpun Ilmu Keteknikan Industri Vol. 3 No. 3 (2025): Manufaktur : Publikasi Sub Rumpun Ilmu Keteknikan Industri
Publisher : Asosiasi Riset Ilmu Teknik Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61132/manufaktur.v3i3.1194

Abstract

This study aims to analyze the quality of coal from the AR_10 borehole in Muara Enim Regency, South Sumatra, based on proximate analysis. The AR_10 borehole has three coal seams (A, B, and C) that were analyzed using the standard ASTM method to determine the coal quality characteristics. The parameters analyzed include total moisture (TM), volatile matter (VM), fixed carbon (FC), ash content (Ash), calorific value (CV), and total sulfur (TS) on an as-received (AR) basis. The analysis results show that seam A has the highest moisture content (19%), seam B exhibits the optimal calorific value (6045 kcal/kg), and seam C has the highest fixed carbon content (42.63%) with the highest sulfur content (0.83%). The correlation between parameters indicates that increases in moisture and ash content negatively affect the calorific value, while an increase in fixed carbon is positively correlated with the calorific value. All three seams fall into the category of low to medium rank coal (subbituminous to high volatile bituminous) with adequate quality for power generation and industrial purposes. This research provides an important contribution to the characterization of Muara Enim Formation coal in South Sumatra for the optimization of local coal resource utilization.
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