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All Journal Journals Mining Engineering : Bina Tambang Journal of Geoscience, Engineering, Environment, and Technology MOTIVECTION : Journal of Mechanical, Electrical and Industrial Engineering Community Empowerment JTPVI: Jurnal Teknologi dan Pendidikan Vokasi Indonesia
Fariz Aditya
Universitas Negeri Padang
Arts Humanities Automotive Engineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Earth & Planetary Sciences Education Electrical & Electronics Engineering Engineering Environmental Science Industrial & Manufacturing Engineering Physics Public Health Social Sciences Other

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Evaluasi Sistem Penambangan Coking Coal untuk mencapai nilai Crucible Swelling Number (CSN) 3-7 di Pit Haju PT Pamapersada Nusantara Jobsite Adaro Met Coal di Kalimantan Tengah Fariz Aditya; Raimon Kopa
Journals Mining Engineering : Bina Tambang Vol 3, No 3 (2018): Journals Mining Engineering: Bina Tambang
Publisher : Departemen Teknik Pertambangan FT UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1284.552 KB) | DOI: 10.24036/bt.v3i3.101410

Abstract

PT Pamapersada Nusantara Jobsite Adaro Met Coal is one of the company's pilot projects in world-class coking coal mining. The right technology and coking coal mining system must be implemented because the quality produced greatly affects the customer's trust. Coking coal is a type of coal that is used as a fuel as well as a reducing agent in the iron / steel industry. One important indicator in distinguishing the quality of coking coal with thermal coal types is the CSN (Crucible Swelling Number) test. Coking coal must have a CSN value of at least 3. Coking coal can decrease in quality due to contamination during the mining process. Based on problem analysis there are 3 mining activities that can affect the quality of coking coal, namely: front loading preparation activities, loading and hauling activities and coal accumulation activities in ROM stock. After applicated improvement of  the mining system in each of these activities comprehensively and then pouring it into the SOP design for coking coal mining, the CSN value was increased by 66% and the ash value decreased by 43%.Keywords: Preparation Front Loading, Loading and Hauling Activities, Coal Accumalation Activities, CSN and Ash
Mine Slope Stability Analysis CV. Putra Idola Against the Padang-Painan Cross Road with GSI Method and Rock Mass Rating Aditya, Fariz; Heriyadi, Bambang; Saldy, Tri Gamela; Nauli, Fitri; Yanti, Syari Rahma; Marlina, Riam; Putra, Kyrie Eleison; Algozi, Rahmad; Akmal, Muhammad
MOTIVECTION : Journal of Mechanical, Electrical and Industrial Engineering Vol 7 No 2 (2025): Motivection : Journal of Mechanical, Electrical and Industrial Engineering
Publisher : Indonesian Mechanical Electrical and Industrial Research Society (IMEIRS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46574/motivection.v7i2.437

Abstract

A slope is a sloping part of the ground surface that connects the higher areas with the lower areas. Slope stability relies heavily on rock mass characteristics, including the Rock Mass Rating (RMR) and Geological Strength Index (GSI) classifications, which are used to evaluate rock quality and slope stability. This research was conducted at the mine CV. Putra Idola which is located in Teluk Kabung Tengah Village, Bungus Teluk Kabung District, Padang City and Nagari Siguntur, XI Koto Tarusan District, Pesisir Selatan Regency, West Sumatra Province. The goal is to determine RMR and GSI values and identify potential slope instability. The methods used include geotechnical mapping with a 15.2-meter long scanline technique to identify burly structures as well as laboratory testing to obtain the physical and mechanical properties of rocks. The data obtained were analyzed to calculate the RMR and GSI values of different types of rocks at the research site. The results showed that the GSI values on the three slopes studied ranged from 53 to 75, while the RMR values ranged from 57 to 75. Based on this classification, the Fresh Andesite and Hornfels rocks are included in the "Good" category, while the Weathered Andesite rocks are included in the "Medium" (Fair) category. The results of this study provide important information for the mining industry in efforts to mitigate landslide risk and design safer slope designs. In addition, this study also emphasizes the importance of rock mass classification analysis in the evaluation of slope stability in open pit mining activities.
Developing Bikan Waterfall geotourism through community-based tourism (CBT): Empowerment of the local tourism awareness group Marlina A, Riam; Anaperta, Yoszi Mingsi; Aditya, Fariz; Heriawan, Rangga Agung Pribadi; Deni, Andri Van; Jesicel, William
Community Empowerment Vol 10 No 12 (2025)
Publisher : Universitas Muhammadiyah Magelang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31603/ce.15352

Abstract

Bikan Waterfall within the Rantih Geosite, Sawahlunto, possesses significant geological value from the Tertiary Ombilin Formation, offering high scientific and educational potential. However, its development is hindered by limited community capacity and a lack of geological interpretation facilities. This community service program aims to strengthen the capacity of the local Tourism Awareness Group (Pokdarwis) through a Community-Based Tourism (CBT) approach. The methodology involves participatory observation, educational geotourism socialization, environmental conservation actions, and the installation of geological interpretive signboards. The results demonstrate a significant increase in community geotourism literacy, the formulation of a CBT-based management strategy, and the availability of interpretive facilities that enhance the site's educational function. This initiative proves that the synergy between geological conservation and local participation effectively increases the competitiveness of Bikan Waterfall as a sustainable geotourism destination.
Optimization of Bench Width and Vertical Bench Position for Claystone Slopes Using the Limit Equilibrium Method under a Safety Factor Constraint Putra, Kyrie Eleison; Aditya, Fariz; Heriyadi, Bambang; Anarta, Rudy
Journal of Geoscience, Engineering, Environment, and Technology Vol. 11 No. 02 (2026): JGEET Vol 11 No 02 : June (2026)
Publisher : UIR PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25299/jgeet.2026.11.02.28001

Abstract

One important aspect of open pit mine planning is slope geometry design, which affects the stability of the slope and the efficiency of overburden removal. This study aims to investigate the influence of vertical bench position and bench width on slope stability and their effect on stripping volume. The limit equilibrium method was used for slope stability analysis, with the assistance of Rocscience Slide2 software. The stripping volume estimate was obtained from pit shell simulations using GEOVIA Surpac software. The vertical bench positions analyzed were ¼, ½, and ¾ of the total slope height, which was 60 m. The bench width variations tested were 0, 5, 10, 15, 20, and 25 m, while maintaining a minimum safety factor requirement of 1,3. The analysis indicated that the optimal configuration is achieved by placing the bench at the vertical position of ½ of the overall slope height with a bench width of 10 m, which results in an overall slope angle of 44°. The result is steeper than the no-bench scenario, with an overall slope angle of 42°. This geometry produces an estimated overburden volume of 195,123,000 m3, which is smaller than the no-bench scenario of 196,559,500 m3. Therefore, the reduction in stripping volume is 1,436,500 m3 or approximately 0.73%. This study shows that optimizing the bench configuration enables the implementation of steeper overall slope angles while reducing the required stripping volume in open pit mine planning.
Optimalisasi Cadangan Marginal Batubara Seam C melalui Redesign pit untuk Meningkatkan Reserve recovery dan Menurunkan Stripping ratio Maya Gustina; Fariz Aditya; Syari Rahma Yanti; Yoszi M. Anaperta
JTPVI: Jurnal Teknologi dan Pendidikan Vokasi Indonesia Vol. 4 No. 2 (2026): JTPVI: Jurnal Teknologi dan Pendidikan Vokasi Indonesia
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/jtpvi.v4i2.438

Abstract

Penelitian ini mengkaji optimalisasi cadangan marginal batubara seam C pada area Life of Mine Bottom pit Jatiluhur, Pit Central NT Tutupan, PT Saptaindra Sejati Jobsite PT Adaro Indonesia. Penelitian bertujuan merancang redesign pit untuk meningkatkan reserve recovery dan menurunkan stripping ratio dengan tetap mempertimbangkan kestabilan lereng. Metode yang digunakan adalah penelitian terapan dengan pengolahan data topografi, geologi, geoteknik, dan desain existing menggunakan Minescape 2023. Estimasi cadangan batubara dan overburden dilakukan melalui reserving berbasis model geologi dan topografi terkini, sedangkan validasi geoteknik menggunakan parameter Factor of Safety. Hasil menunjukkan bahwa desain optimalisasi meningkatkan estimasi cadangan batubara dari 53.270 ton menjadi 313.979 ton dan menurunkan stripping ratio dari 0,31 menjadi 0,09. Kontribusi penelitian terletak pada penerapan redesign pit berbasis kondisi geologi aktual pada area bottom pit mendekati mine out. Nilai faktor keamanan memenuhi batas minimum perusahaan, sehingga desain yang diusulkan layak secara teknis-geoteknik. This study examines the optimization of marginal seam C coal reserves in the Life of Mine area of Bottom pit Jatiluhur, Pit Central NT Tutupan, PT Saptaindra Sejati Jobsite PT Adaro Indonesia. It aimed to develop a pit redesign to improve reserve recovery and reduce the stripping ratio while maintaining slope stability. This applied study processed topographic, geological, geotechnical, and existing pit design data using Minescape 2023. Coal reserves and overburden were estimated through reserving based on updated geological and topographic models, while geotechnical validation used the Factor of Safety parameter. The optimized design increased estimated coal reserves from 53,270 tons to 313,979 tons and reduced the stripping ratio from 0.31 to 0.09. The contribution lies in applying pit redesign based on actual geological conditions to a near mine-out bottom pit. The Factor of Safety met the company’s minimum requirement, indicating technical and geotechnical feasibility.
Mining Sequence Compliance and Production Performance in an Open-Pit Coal Mine: A Case Study of Pit Rista, South Sumatra Ambun Qodri; Fariz Aditya; Fadhilah Fadhilah; Tri Gamela Saldy
MOTIVECTION : Journal of Mechanical, Electrical and Industrial Engineering Vol 8 No 1 (2026): Motivection : Journal of Mechanical, Electrical and Industrial Engineering
Publisher : Indonesian Mechanical Electrical and Industrial Research Society (IMEIRS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46574/motivection.v8i1.530

Abstract

This study assesses coal and overburden production efficacy for the mining sequence at Pit Rista, PT Dewa Sukses Mandiri, South Sumatra, during July and August 2025, and recommends operational enhancements to facilitate production objectives in the following months. The investigation was prompted by the inability to meet monthly production targets, as evidenced by insufficient effective working hours, excessive downtime, low equipment availability, and discrepancies between planned and actual mining progress. A quantitative evaluative method was employed utilizing primary data consisting of loading and hauling cycle durations, alongside secondary data such as production reports, working hours, downtime records, mine design, and mining sequence plans. The examination encompassed equipment productivity, job efficiency, match factor, physical availability (PA), use of availability (UA), Pareto analysis of downtime, and a comparison between planned and actual implementation of the mining sequence. The findings indicate that production deficits in July and August 2025 were mostly attributable to diminished effective working hours resulting from operational and mechanical delays, low PA and UA values, and discrepancies between the planned mining sequence and actual field execution. In July, the primary cause of lost time was the lack of hauling help, however in August, weather-related delays emerged as the principal limitation. These conditions impeded mining advancement and diminished overall output efficacy. In light of these findings, production optimization should prioritize enhancing mining sequence execution, reinforcing equipment maintenance and oversight, reconfiguring pit front and haul road geometry, and regulating haul road gradients to minimize downtime and enhance operational efficiency.
Counterweight Reinforcement versus Slope Geometry Redesign for the Block 16 Sidewall at PT XYZ Bambang Heriyadi; Rinaldo Maretto Patar Simangunsong; Yozsi Mingsi Aneperta; Heri Prabowo; Fariz Aditya
MOTIVECTION : Journal of Mechanical, Electrical and Industrial Engineering Vol 8 No 2 (2026): Motivection : Journal of Mechanical, Electrical and Industrial Engineering
Publisher : Indonesian Mechanical Electrical and Industrial Research Society (IMEIRS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46574/motivection.v8i2.543

Abstract

Landslides occurred on the Block 16 sidewall at PT XYZ, where the upper benches comprise low-stability fill and the lower benches comprise bedded rock. This study characterized the rock mass, assessed discontinuity-controlled failure potential, calibrated the failed-slope condition by back analysis, and compared counterweight reinforcement with slope-geometry redesign. Scanline mapping, Rock Mass Rating (RMR), stereographic kinematic analysis, Slope Mass Rating (SMR), and Bishop-simplified limit-equilibrium simulations in Slide 6.0 were applied. The lower rock benches had an average RMR of 69.5 and an SMR of 68.6. Oblique-toppling criteria were satisfied by 7.62% of the analyzed discontinuities. The initial model yielded an SF of 1.239, while back analysis reproduced the failure condition at SF = 0.995. Counterweighting increased SF to 1.324 using 42.6 m³/m of fill; geometry redesign produced SF = 1.352 with 264.98 m³/m of excavation. Both alternatives met the SF > 1.3 criterion, but counterweighting required substantially less material handling.
Co-Authors Algozi, Rahmad Ambun Qodri Bambang Heriyadi Deni, Andri Van Fadhilah Fadhilah Heri Prabowo Heriyadi, Bambang Jesicel, William Marlina A, Riam Maya Gustina Muhammad Akmal Nauli, Fitri Putra, Kyrie Eleison Raimon Kopa Rangga Agung Pribadi Heriawan Riam Marlina A Rinaldo Maretto Patar Simangunsong Rudy Anarta Saldy, Tri Gamela Syari Rahma Yanti Syari Rahma Yanti Tri Gamela Saldy Yoszi M. Anaperta Yoszi Mingsi Anaperta Yozsi Mingsi Aneperta