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All Journal Journal Transformation of Mandalika Jurnal Riset Teknik Pertambangan INTAN Jurnal Penelitian Tambang Jurnal Riset Rumpun Ilmu Teknik (JURRITEK) Prosiding Seminar Nasional Rekayasa Teknologi Industri dan Informasi ReTII Globe: Publikasi Ilmu Teknik, Teknologi Kebumian, Ilmu Perkapalan JURNAL TEKNOLOGI MINERAL FT UNMUL Konstruksi: Publikasi Ilmu Teknik, Perencanaan Tata Ruang dan Teknik Sipil Manufaktur: Publikasi Sub Rumpun Ilmu Keteknikan Industri Venus: Jurnal Publikasi Rumpun Ilmu Teknik Bilangan: Jurnal Ilmiah Matematika, Kebumian dan Angkasa
Tommy Trides
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Aerospace Engineering Agriculture, Biological Sciences & Forestry Astronomy Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mathematics Mechanical Engineering Medicine & Pharmacology Physics Transportation

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Analisis Jarak Lemparan Flyrock Terhadap Radius Aman Alat 150 Meter Di Pit 40 Sentuk PT Multi Harapan Utama, Kecamatan Loa Kulu, Kabupaten Kutai Kartanegara, Kalimantan Timur: Analisis Jarak Lemparan Flyrock Desi Permatasari; Tommy Trides; Shalaho Dina Devy; Revia Oktaviani
Retii 2024: Prosiding Seminar Nasional ReTII ke-19 (Edisi Penelitian)
Publisher : Institut Teknologi Nasional Yogyakarta

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Abstract

Flyrock adalah fragmentasi batuan yang terlempar ke segala arah akibat dari kegiatan peledakan. Ukuran flyrock yang cukup besar dan melewati batas aman yang ditentukan akan menimbulkan kerusakan bagi alat, bangunan sekitar, maupun cidera pada manusia. Oleh karena itu, penelitian ini dilakukan untuk mengetahui jarak flyrock maksimum, parameter yang paling berpengaruh serta evaluasi dari parameter terbesar penyebab flyrock. Untuk memprediksi lemparan flyrock teoritis menggunakan teori Richard & Moore dan Ebrahim Ghasemi. Hasil penelitian didapatkan jarak flyrock maksimum berdasarkan perhitungan aktual yaitu 119,42 meter, berdasarkan perhitungan teoritis menurut Richard & Moore mekanisme face burst yaitu 241,42 meter, mekanisme cratering yaitu 105,51 meter dan teori Ebrahim Ghasemi yaitu 83,03 meter. Teori Ebrahim Ghasemi memiliki keakuratan paling tinggi di antara metode lainnya dengan nilai RMSE sebesar 23,58 meter dan MAPE sebesar 36,53%. Faktor terbesar penyebab jauhnya lemparan flyrock yaitu powder factor, sehingga dilakukan analisis untuk mendapatkan jarak lemparan flyrock maksimum 75 meter agar radius aman alat 150 meter, maka penggunaan powder factor maksimum yang digunakan yaitu 0,24 kg/m3.
Analisis Kemampugaruan Batuan Berdasarkan Metode Seismic Pada Penambangan Batupasir Provinsi Kalimantan Timur : Analisis Kemampugaruan Batuan Bayu Indra Dermawan; Agus Winarno; Shalaho Dina Devy; Tommy Trides; Revia Oktaviani
Retii 2024: Prosiding Seminar Nasional ReTII ke-19 (Edisi Penelitian)
Publisher : Institut Teknologi Nasional Yogyakarta

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Abstract

In mining activities, high risk is one of the main aspects that must be anticipated, especially regarding the geomechanical complexity of the rocks being excavated. Selecting the right excavation method can greatly impact operational efficiency and safety. In this context, direct digging, ripping, and blasting are the three main options, tailored to the characteristics of the rock.To determine the most suitable method, a rock rippability study is essential. This study can be conducted using direct or indirect methods. In this research, the seismic method was used to assess rock strength based on the seismic wave velocity, which was recorded at 1437.80 m/s. This value serves as a reference for selecting appropriate equipment for ripping activities.Given these characteristics, the recommended equipment for ripping is the D8T/D8R dozer from Caterpillar or the D275A/D275AX dozer from Komatsu. This equipment choice is based on its capability to handle rocks with strength levels reflected by the measured seismic wave velocity.
Studi Pengaruh Geometri Peledakan terhadap Biaya Pemboran dan Biaya Peledakan pada PT Unggul Dinamika Utama Kabupaten Kutai Timur Provinsi Kalimantan Timur Berliani Wahyu Ningrum; Tommy Trides; Rety Winonazada; Revia Oktaviani; Lucia Litha Respati
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.v3i5.1158

Abstract

This study aims to analyze the effect of blasting geometry on drilling and blasting costs in mining operations at PT Unggul Dinamika Utama, Kutai Timur Regency, East Kalimantan Province. The research focuses on comparing two operational areas, namely PIT Tempudo 6 and PIT East, which apply different blasting geometries: a burden of 7 m and spacing of 8 m at PIT Tempudo 6, and a burden of 8 m and spacing of 9 m at PIT East. The research method involved collecting primary data from actual field drilling and blasting activities, as well as secondary data from the company. The parameters analyzed included blasting geometry, explosive consumption, and operational costs of drilling and blasting. The results show that the total drilling cost at PIT Tempudo 6 was Rp. 215,689,696, while at PIT East it was Rp. 162,177,899. The total blasting cost at PIT Tempudo 6 reached Rp. 3,023,066,977.60, while at PIT East it was Rp. 1,780,839,602.80. Thus, the total operational cost of blasting activities at PIT Tempudo 6 amounted to Rp. 3,238,756,673.60, and at PIT East amounted to Rp. 1,943,017,501.80. It can be concluded that differences in blasting geometry significantly affect operational cost efficiency. Larger burden and spacing values lead to more efficient costs by reducing the number of drill holes and explosive consumption per blasted rock volume.
Penentuan Nilai Peak Particle Velocity Peledakan Berdasarkan Analisis Regresi Non Linear dan US Bureau Of Mines Oriard’s Formula pada Pit Pinang PT Bukit Baiduri Energi Djuwita Dela Safitri; Tommy Trides; Agus Winarno; Albertus Juvensius Pontus; Lucia Litha Respati
Venus: Jurnal Publikasi Rumpun Ilmu Teknik  Vol. 3 No. 6 (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.v3i6.1198

Abstract

This research investigates the Peak Particle Velocity (PPV) resulting from blasting operations at Pit Pinang, PT Bukit Baiduri Energi, employing two prediction approaches: Non-Linear Geometric Regression and the USBM Oriard’s Formula. Ground vibration measurements were recorded over a one-month period, from October 9 to November 8, 2025. The findings indicate that the non-linear regression model achieves a higher predictive accuracy of 78.62%, outperforming the USBM Oriard’s Formula, which reaches 68.2%. Variations between the observed and estimated PPV values were affected by factors such as the location of geophones, differences in explosive charges, and alterations in borehole depths. In addition, the study evaluates optimal explosive charge recommendations in accordance with SNI 7571:2010 standards to mitigate potential structural damage in surrounding areas. By highlighting these predictive discrepancies and providing practical guidance on charge management, the research offers valuable insights for improving blasting safety and minimizing vibration impacts on nearby infrastructure. The comparison of methods emphasizes the importance of selecting appropriate prediction models to ensure both operational efficiency and environmental safety.
Studi Kestabilan Lereng Sandstone dengan Metode Bishop Simplified di Samarinda Ulu, Kalimantan Timur Muhammad Hamzah; Tommy Trides; Revia Oktaviani; Lucia Litha; Albertus Juvensius
Venus: Jurnal Publikasi Rumpun Ilmu Teknik  Vol. 3 No. 6 (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.v3i6.1226

Abstract

A research about study of sandstone slope stability using the Bishop Simplified method in Uu Samarinda has been conducted. This study was conducted to analyze the rebound number values of sandstone slopes, evaluate their stability level, and calculate the safety factor using the Bishop method. The results showed that the rebound number values were 22.34 at point 1, 19.83 at point 2, and 18.07 at point 3. The Uniaxial Compressive Strength (UCS) values at the observation points were 1.90 MPa, 1.62 MPa, and 2.21 MPa, respectively. Geological Strength Index (GSI) evaluation indicated a rating of 80–85, demonstrating intact/massive rock structure, fresh and unweathered rock surfaces, and very good rock quality. Based on the Bishop method analysis, the slope factor of safety in 6.525 with a probability of failure is 0.000%, indicating that the sandstone slope in Ulu Samarinda is highly stable even under external pressures such as heavy rainfall or minor earthquakes. This study provides crucial information on the mechanical characteristics and stability of sandstone slopes in ulu Samarinda, which can serve as a reference for technical planning, geotechnical risk mitigation, and the sustainable development of safe areas.
Evaluasi Kinerja Alat Gali Muat dan Alat Angkut dengan Metode Match Factor pada Operasi Pengupasan Overburden pada Pit Tengah di PT. Bumi Artlantis Raya Kabupaten Berau Mustafa Wadi; Henny Magdalena; Tommy Trides
Konstruksi: Publikasi Ilmu Teknik, Perencanaan Tata Ruang dan Teknik Sipil Vol. 3 No. 1 (2025): Januari: Konstruksi: Publikasi Ilmu Teknik, Perencanaan Tata Ruang dan Teknik S
Publisher : Asosiasi Riset Ilmu Teknik Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61132/konstruksi.v3i1.1249

Abstract

Overburden stripping operations in the coal mining industry require optimal performance of loading and hauling equipment to achieve production efficiency. This study aims to evaluate the performance of loading and hauling equipment using the Match Factor method in overburden stripping operations at PT Bumi Artlantis Raya. The results indicate that the equipment combination achieved a Match Factor of 0.85, reflecting moderate compatibility with a potential efficiency improvement of 15%. The actual productivity of Excavator 4002 reached 137.02 bcm/hour (91.35% of the 150 bcm/hour target), while Excavator 4004 exceeded the target with a productivity of 195.73 bcm/hour (130.49% of the target). In contrast, dump truck productivity remained relatively low (Mercedes dump truck: 35.58 bcm/hour; Hino dump truck: 35.40 bcm/hour), primarily due to waiting time during loading and disposal activities. Statistical analysis reveals a strong negative correlation between cycle time and productivity (R² = 0.9929). The optimal cycle time to achieve a Match Factor of 0.80 is 969 seconds, corresponding to an optimal hauling distance of 5.38–6.725 km. Although mechanical availability and physical availability were high (94–100%), the use of availability and effective utilization were relatively low due to an imbalance between loading and hauling equipment. This study concludes that improving equipment coordination, increasing bucket fill factor, enhancing haul road conditions, and implementing preventive maintenance are essential to achieving more optimal operational efficiency in overburden stripping activities.
Analisis Risiko dengan Pendekatan Semi-Kuantitatif untuk Stabilitas Lereng Highwall pada PIT B1 PT. Pancaran Surya Abadi Kabupaten Kutai Kartenegara Melki Marten; Revia Oktaviani; Windhu Nugroho; Tommy Trides; Albertus Juvensius Pontus
JURNAL RISET RUMPUN ILMU TEKNIK Vol. 5 No. 1 (2026): April: Jurnal Riset Rumpun Ilmu Teknik
Publisher : Pusat riset dan Inovasi Nasional

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55606/jurritek.v5i1.7628

Abstract

Guaranteeing the geotechnical stability of slopes is an absolute prerequisite for the sustainability of open pit mining operations, considering the potential for multidimensional losses due to slope failure. The specific geological conditions at PIT B1 PT. Pancaran Surya Abadi, which is composed of sedimentary rocks (coal, sandstone, and claystone), are susceptible to degradation and softening, especially due to high rainfall that causes an increase in pore water pressure and a decrease in rock shear strength. This study aims to analyze the stability of highwall slopes using the Morgenstern-Price Method to determine the Safety Factor (SFF) value according to Ministerial Decree number 1827 K/30/MEM/2018, and continued with a semi-quantitative risk analysis. The analysis results show that the initial slope has a static SFF of 0.77 (Not Safe). After redesign, the recommended optimal single slope geometry is: sandstone (Height 5 m, Angle 20°, Berm 5 m) and claystone (Height 10 m, Angle 60°, Berm 5 m). This redesign resulted in a FK of 1.34 (Safe). Sensitivity analysis to groundwater level rise (GTL) showed that the GTL value remained safe (GTL ≥1.30) up to a 30% increase in GTL. However, a 40% to 80% increase in GTL caused the GTL to decrease (1.28–1.21), classified as Medium Risk. A 100% increase in GTL drastically reduced the GTL to 1.05, classified as High Risk. This study emphasizes the need for close monitoring and additional drainage to maintain the long-term stability of slopes under the influence of rainfall.
Studi Kehilangan Volume Batugamping pada Kegiatan Peledakan dan Crushing di PT. Yusrina Borneo Quantum Kecamatan Loakulu Kabupaten Kutai Kartanegara, Provinsi Kalimantan Timur Muhammad Aji Satria Mandiri; Revia Oktaviani; Agus Winarno; Tommy Trides; Windhu Nugroho
Bilangan : Jurnal Ilmiah Matematika, Kebumian dan Angkasa Vol. 3 No. 6 (2025): Desember : Bilangan : Jurnal Ilmiah Matematika, Kebumian dan Angkasa
Publisher : Asosiasi Riset Ilmu Matematika dan Sains Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62383/bilangan.v3i6.867

Abstract

Blasting and crushing are essential stages in the limestone mining process; however, both stages may contribute to material volume loss due to technical factors and geological conditions. This study aims to analyze the blasted volume, crushed volume, and the amount of volume loss occurring throughout these processes. The research utilizes primary data including blasting geometry, blasting patterns, crushing production, and secondary data such as regional geology and equipment specifications. Based on 15 blasting activities conducted from October to December 2024, the total blasted volume reached 71,691 tons with an average powder factor of 0.23 kg/m³. Meanwhile, the total volume produced from secondary crushing was 71,575 tons. The comparison indicates volume loss influenced by suboptimal fragmentation, rock characteristics, work efficiency of the crushing unit, and operational constraints in the field. The results of this study are expected to serve as a reference for optimizing blasting design and crushing operations to minimize volume loss and improve overall mining productivity.
Perencanaan Counterweight untuk Meningkatkan Kestabilan Lereng dan Kapasitas Disposal pada Area Disposal T4 PT Unggul Dinamika Utama Provinsi Kalimantan Timur Nurfitri Kasran; Revia Oktaviani; Ardhan Ismail; Tommy Trides; Albert Juvensius Pontus
Globe: Publikasi Ilmu Teknik, Teknologi Kebumian, Ilmu Perkapalan Vol. 4 No. 1 (2026): Februari: Publikasi Ilmu Teknik, Teknologi Kebumian, Ilmu Perkapalan
Publisher : Asosiasi Riset Ilmu Teknik Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61132/globe.v4i1.1318

Abstract

The stability of disposal slopes is a critical aspect of open-pit mining operations because it directly affects operational safety and the continuity of overburden dumping activities. Disposal areas composed of overburden materials generally exhibit heterogeneous characteristics, particularly when soft materials such as mud are present, which can significantly reduce slope stability. Therefore, a comprehensive slope stability evaluation is required prior to further disposal development. This study aims to assess the stability condition of a disposal slope under initial conditions, evaluate the influence of material conditions, and analyze the effectiveness of counterweight application in improving both the safety factor and disposal capacity. The research methodology involved the collection of primary and secondary data, including slope geometry, lithological conditions, and the physical and mechanical properties of disposal materials obtained from laboratory testing and company technical data. Slope stability analysis was performed using the limit equilibrium method with the assistance of geotechnical software, taking into account groundwater conditions and operational loading. The analysis results indicate that the initial disposal condition yielded a safety factor of 0.718, indicating an unstable slope condition. After simulating the removal of mud material, the safety factor increased to 0.907 but remained below acceptable stability criteria. The application of a counterweight significantly improved slope stability, resulting in a safety factor of 1.498. Further optimization through slope geometry redesign produced a final safety factor of 1.101, which satisfies the requirements stipulated in KEPMEN ESDM No. 1827 K/30/MEM/2018. Additionally, the redesign increased the disposal capacity from 119,507,864.23 LCM to 119,682,378.22 LCM, representing an increase of 174,513.99 LCM. These results demonstrate that counterweight application combined with geometric optimization is effective in enhancing both slope stability and disposal capacity.
Analisis Pergerakan Lereng Tambang Menggunakan Alat CHCNAV PS 2000 di PT Insani Bara Perkasa Kabupaten Kutai Kartanegara Provinsi Kalimantan Timur Muhammad Iksan Hamsyah; Revia Oktaviani; Lucia Litha Respati; Tommy Trides; Agus Winarno
Venus: Jurnal Publikasi Rumpun Ilmu Teknik  Vol. 4 No. 1 (2026): 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.v4i1.1301

Abstract

Mine slopes play a crucial role in ensuring the safety and sustainability of mining activities. Continuous mining operations can alter slope conditions, thereby increasing the potential for instability and slope failures. Slope stability is influenced by the balance between resisting forces and driving forces acting on the rock mass. When the resisting forces are smaller than the driving forces, the slope becomes unstable and failure may occur. Therefore, slope stability analysis is essential to prevent landslide hazards, as it directly affects occupational safety, equipment security, other assets, and overall production continuity. These conditions have encouraged PT Insani Bara Perkasa to develop a more accurate and real-time slope monitoring system. The application of radar-based monitoring was initiated using the CHCNAV PS-2000 system. This study aims to analyze the deformation behavior of mine slopes using radar technology. Data acquisition was conducted at Pit K1 Mahakam, PT Insani Bara Perkasa, covering Area 1 South, AR 2 South, AR 3 South, AR 5 South, AR 6 South, AR 7 West, AR 8 West, AR 9 South, AR 13 South, as well as TA-2, TA-3, and TA-6 areas. The study was carried out from November 2025 to December 2026. The analysis results indicate that most monitoring points are in stable conditions, with indications of a progressive phase observed in the AR 6 South area.
Co-Authors Agus Winarno Al Mulyadi Albert Juvensius Pontus Albertus J Pontus Albertus Juvensius Albertus Juvensius Pontus Albertus Pontus Aldicho Alfiandy Suhendik Amarullah Amarullah Anandyta Suci Ramdani Andreas Marojahan Gurning Ardhan Ismail Arya Mu’min Wally Bayu Indra Dermawan Benny Christian BB Berliani Wahyu Ningrum Bunga Bunga Desi Permatasari Djuwita Dela Safitri Eghi Eghi Eka Ely Febrianty Evon Seplika Kadang Fadli Fadli Farah Dinna Febryantho Pasiakan Fery Ferdiansyah Gideon Samari Suno Harjuni Harjuni Hasan Henny Magdalena Ibnu Syafi’i Rhamadany Juan, Juan Kasbillah Koeshadi Sasmito Lucia Litha Lucia Litha Respati Marlinus Matius Lollong Melki Marten Muhammad Aji Satria Mandiri Muhammad Ashar Alias Suara Muhammad Hafidz Muhammad Hamzah Muhammad Iksan Hamsyah MUHAMMAD ILHAM Muhammad Rahul Shidiq Muhammad Rayhan Fhadillah Musmulyanas Mus Mustafa Wadi Nirwana Putri Nurfitri Kasran Nurhidayatullah Am Ondo Immanuel Samosir Orfinada Sultan Danilof Rafael Bonardy Gultom Renaldy Kyfen Kapoyos Rety Winonazada Revia Oktaviani Revia Oktaviani Roberto Firson Pappang Ruslan Patur Sakdillah S Sakdillah Sakdillah Setiawan Tandi Shalaho Dina Devi Shalaho Dina Devy Siti Asmasari Sri Wahyuni Tommy Aria Pradana Widya Indriani windhu Nugroho Yoga Achmad Rynaldy Yuana Saputra