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Jurnal Mineral
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Gedung Dharma Pengabdian, Fakultas Teknik Universitas Bangka Belitung, Kampus Terpadu UBB, Balunijuk Provinsi Kepulauan Bangka Belitung
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INDONESIA
MINERAL
Published by Universitas Bangka Belitung
ISSN : 25407708     EISSN : 2620729X     DOI : https://doi.org/10.33019/mineral.v6i2
Core Subject : Science, Social, Engineering,
Earth & Planetary Sciences Energy Engineering Environmental Science Materials Science & Nanotechnology
The scientific journal called MINERAL is a scientific periodical publication of Mining Engineering Department , Bangka Belitung University, which is published every April and October in a year which the scope of Exploration (Geology and Geophysics), Geotechnical / Geomechanics, Minerba Processing, Minerba Management and Economics, Mining Environment, Reclamation and Post-Mining. This journal collaborates with Association of Indonesian Mining Professionals (PERHAPI) Center and Forum Komunikasi Program Studi Teknik Pertambangan se-Indonesia.
Arjuna Subject : Ilmu Bumi dan Planet (semua kategori) - Ilmu Bumi dan Planet (Lain-Lain)
Articles 6 Documents
 1 
Search results for , issue "Vol 10 No 1 (2025): MINERAL" : 6 Documents clear
Kajian Teknis Perencanaan Desain Peledakan Untuk Mengurangi Getaran Tanah di PT Pamapersada Nusantara Site PT Bukit Asam Tbk: Study Of Blast Design Technical To Minimize Ground Vibration At PT Pamapersada Nusantara Site PT Bukit Asam Tbk Pebrianto, Rosihan; Wibowo, Satriya; Al Hadi, Alex
MINERAL Vol 10 No 1 (2025): MINERAL
Publisher : Program Studi Teknik Pertambangan Universitas Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33019/r2ftaz19

Abstract

The impacts of drill and blast activities is ground vibration. A limit of PPV according to SNI is 5 mm/s for buildings with foundations, masonry and cement. The average PPV in this blasting activity is 2 mm/s. The community is complain that level of ground vibration produced was still felt and worried damage the building. So, PT Bukit Asam Tbk has made a regulation of the ground vibration is ≤ 1 mm/s for blasting in the near houses. The purpose of this study is to make a blast design geometry form burden, spacing, and stemming, weight of explosives maximum, , delay configuration, and estimate of the fragmentation in 800m by PPV  ≤ 1 mm/s. This research method uses quantitative research methods by observing, collecting and processing data, testing data results, and making blast designs. The results show that the PPV value can be predicted using the equation of non-linear power regression. The design of the blasting geometry to obtain a PPV value of ≤ 1 mm/s is by using a presplit method, with a vulnerable space of 6 – 7.5 m, a burden of 5 – 6.5 m, and a maximum of explosives is 24-40 Kg/hole.
Analisis Perbandingan Kuantitas Batubara Antara Drone Dji Phantom 4 RTK Dengan Terrestrial Laserr Scanner Pada Stockpile LS DH5: Comparative Analysis of Coal Quantity Between DJI Phantom 4 RTK Drone and Terrestrial Laser Scanner on LS DH5 Stockpile Hardianti, Siti; Maryana; Dilariya
MINERAL Vol 10 No 1 (2025): MINERAL
Publisher : Program Studi Teknik Pertambangan Universitas Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33019/rtm5vr96

Abstract

Calculation of coal quantity can be done by various methods, one of which is by measuring the detailed situation using survey tools such as Total Station, GPS or GNSS, can also use Terrestrial Laser Scanner and popular technology currently used for volumetric survey activities is unmanned aircraft or drones. The purpose of this study was to determine the quantity of coal stockpile LS DH 5 using the DJI Phantom 4 RTK Drone and Terrestrial Laser Scanner, compare the quantity results of the two measuring instruments and determine the feasibility of the coal quantity measured by the DJI Phantom 4 RTK Drone against the quantity measured by the Terrestrial Laser Scanner. The calculation results using the DJI Phantom 4 RTK Drone were 243,214.506 tons and the calculation results using the Terrestrial Laser Scanner were 242,713.028 tons, between the two calculations there was a difference of 501.478 tons or 0.21%, From this comparison, the calculation results of the DJI Phantom 4 RTK Drone are considered close to accuracy because they are within the tolerance standard (Industry Adapted Error) used, which is 2% according to ASTM D6172-98.  
Kajian Teknis Flyrock Dan Jarak Aman Minimum Peledakan Di Jobsite PT Unggul Dinamika Utama Site PT Indexim Coalindo: Flyrock Technical Study and Minimum Safe Distance for Blasting at PT Unggul Dinamika Utama's Jobsite at PT Indexim Coalindo's Site Indra, M Alfarie; Franto; Guskarnali
MINERAL Vol 10 No 1 (2025): MINERAL
Publisher : Program Studi Teknik Pertambangan Universitas Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33019/bwj5jg83

Abstract

This study examines the condition of flyrock and safe blasting distance at the jobsite of PT Unggul Dinamika Utama-PT Indexim Coalindo in East Kutai, East Kalimantan. The study was conducted at Pit Tempudo 6 by collecting blasting geometry data and actual flyrock points using GPS as many as 30. The research method used was the actual calculation of flyrock throwing distance using Pythagoras and the predicted calculation of flyrock throwing distance using the theory of Richard and Moore and Ebrahim Ghasemi which was then carried out a technical study of flyrock and minimum safe blasting distance. The processing results showed the use of an average blasting geometry with a burden value of 7.86m, spacing of 8.96m, stemming of 3.64m, blast hole depth of 7.05m, powder column of 81.64kg with the furthest actual flyrock distance of 90.3m. The influence of blasting geometry parameters obtained a burden value of 0.01%, spacing of 0.86%, Stemming of 18.09%, blast hole depth of 6.38%, powder column of 2.21%. Stemming has a high influence on flyrock, with a percentage of 18.09%. Additional factors such as inadequate site preparation and insufficiently dense stemming also contribute to flyrock. Theoretical predictions after the calculated data were transformed showed that the Richard and Moore cratering factor method had the closest results, at 24%, compared to Ebrahim Ghasemi's 29%. Based on technical studies, the recommended safe radius is 181 m for heavy equipment, while for humans it remains at 500 m.
Kajian Kelayakan Jalan Angkut Menggunakan Metode AASHTO, Unsurfaced Road Condition Indeks dan California Bearing Ratio di PT Mandala Karya Prima, Kalimantan Utara: Feasibility Study of Transport Roads Using AASHTO Method, Unsurfaced Road Condition Index, and California Bearing Ratio at PT Mandala Karya Prima, North Kalimantan Silaban, Cindy Grestina; Andini, Delita Ega; Harsiga, Edwin
MINERAL Vol 10 No 1 (2025): MINERAL
Publisher : Program Studi Teknik Pertambangan Universitas Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33019/93fsva56

Abstract

PT Mandala Karya Prima is facing challenges due to damage to the roadway that has caused a decline in travel hauler performance, resulting in unmet overburden production targets. The purpose of this research is to evaluate and recommend road geometry based on AASHTO methods, transport road quality based on URCI values, and transport road bearing capacity based on CBR testing using the DCP tool. The width of the straight road ranges from 26 to 47 meters, and 22 meters on curved roads. The road grade varies from 1.666% to 10.041%, and the cross slope is not formed. The superelevation is 0.0156 m/m with a curvature radius of 30.387 meters. The quality value of the transport road on Jl. Jati STA 200 – 1700 is 51-73 with a Good rating on the dry loading lane and on the post-rain loading lane with a value of 39-67 and a Fair rating. Meanwhile, the URCI value on the empty lane with dry conditions is 59-77 with a Good rating, and on the empty lane under post-rain conditions, it has a Good rating with values ranging from 32-69. The varying CBR values range from 18.1% to 31%, with an average of 25.6%, which is still below the required standard of 36.23%. Recommendations that can be made for improving access roads include road widening, spoil relocation, reformation of drainage, road material backfilling, use of graders and compactors, and patching at several points.
Evaluasi Safety Maturity Level Dengan Metode Saaty Di Tambang PT Mitra Stania Prima, Desa Cit/Mapur Kabupaten Bangka.: Evaluation of the Safety Maturity Level Using the Saaty Method at PT Mitra Stania Prima Mining Site, Cit/Mapur Village, Bangka Regency Lingga, Yesi Crystiyanti Hangelina Br; Franto; Harsiga, Edwin
MINERAL Vol 10 No 1 (2025): MINERAL
Publisher : Program Studi Teknik Pertambangan Universitas Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33019/96mbh329

Abstract

This study aims to evaluate the Safety Maturity Level within the mining industry using the Analytical Hierarchy Process (AHP) method developed by Saaty, allowing for objective and systematic prioritization of influencing factors. A case study was conducted at PT. Mitra Stania Prima, a tin mining company, with the assessment framework referring to the Decree of the Director General of Mineral and Coal No. 10.K/MB.01/DJB.T/2023 concerning the measurement of mining safety maturity levels. The evaluation considered four key indicators: Worker Participation (weight: 0.134, categorized as Proactive), Responsibility of Work Unit Leadership (weight: 0.296, Proactive), Accident and Occupational Disease Statistics and Analysis (weight: 0.164, Planned), and Control Efforts (weight: 0.216, Planned). The results indicate that PT. Mitra Stania Prima achieved a total score of 0.806, placing it at Level 4 (Proactive) on the Safety Maturity Level scale. The most influential factor was the Responsibility of Work Unit Leadership (eigenvalue: 0.44), followed by Control Efforts (eigenvalue: 0.39). It can thus be concluded that the company's current safety maturity is categorized as Proactive, with a final score of 0.81. To achieve the highest level, Resilient (score of 1.00), the company is advised to improve by 0.09 points by strengthening critical aspects, including addressing safety audit findings, digitalizing safety documentation, and involving third-party vendors in enhancing overall safety maturity.
Pengukuran Volume Overburden Menggunakan UAV di Pit 3HWE PT Indominco Mandiri: Measuring Overburden Volume Using UAV at Pit 3HWE PT Indominco Mandiri Sendana, Aprianto Aris; Magdalena, Henny; Devy, Shalaho Dina; Trides, Tommy; Respati, Lucia Litha
MINERAL Vol 10 No 1 (2025): MINERAL
Publisher : Program Studi Teknik Pertambangan Universitas Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33019/vjs1rh30

Abstract

This study aims to measure the overburden volume at Pit 3HWE, PT. Indominco Mandiri using Unmanned Aerial Vehicle (UAV) technology. The use of UAV for volume measurement offers a more efficient and accurate alternative compared to conventional methods. In this research, aerial images were captured using a UAV and processed with photogrammetry software to generate a digital surface model (DSM) and 3D maps. The overburden volume calculations were analyzed and compared with manual measurement data as a reference. The results indicate that UAV usage provides accurate results with higher time efficiency, making it a viable method for mining operations. Factors affecting the measurement results, such as weather conditions and image resolution, were also analyzed in this study.

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