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All Journal Jurnal Teknologi Mineral dan Batubara Venus: Jurnal Publikasi Rumpun Ilmu Teknik
Qurratul Ayun
Universitas Sriwijaya
Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Energy Engineering Environmental Science Materials Science & Nanotechnology

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ANALISIS KELAYAKAN INVESTASI PENAMBANGAN BATUBARA DI PT. CIPTA KRIDATAMA SITE PT. KIM, KABUPATEN BUNGO, PROVINSI JAMBI Qurratul Ayun; Restu Juniah; Azwardi
Jurnal Teknologi Mineral dan Batubara Vol 19 No 1 (2023): Jurnal Teknologi Mineral dan Batubara Edisi Januari 2023
Publisher : Balai Besar Pengujian Mineral dan Batubara tekMIRA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30556/jtmb.Vol19.No1.2023.1327

Abstract

Indonesia economic development cannot be separated from the role of natural resources, one of the natural resources that currently supports the Indonesian economy is coal. This research was conducted in order to see the prospects for coal mining activities at PT. Cipta Kridatama, site PT. Kuansing Inti Makmur (PT KIM), Bungo Regency, Jambi province through an analysis of management strategies in the form of investment feasibility. The research methodology used is descriptive qualitative in nature referring to quantitative studies, comparative studies (comparisons), and correlational studies. Data collection techniques are carried out by: field research, literature study and secondary data collection such as RKAB of the company. Based on field research, the data obtained included cropline roofs and M4 floor seam, coal strike and dip, overall highwall slope and outcrop area (section). The results of the investment feasibility study were obtained from coal resources based on a stripping ratio (SR) of 1:4.56. From the calculation results, the net present value (NPV) is greater than 0, which is 16,169,241,885, so it can be concluded that this project is considered economical and feasible to mine. The internal rate of return (IRR) is 19.807%, means that PT. Cipta Kridatama was able to return the invested capital with an increase in interest rates reaching 19.807%. Meanwhile, based on the payback period (PBP) calculation, it shows that the time needed for the investment capital to return is 5.6 years, this shows that the payback period is smaller than the project implementation period. The project ratio value (PI)>1 is 3.9537 which means the project is feasible to operate. The calculation has adjusted the discount rate, so the present value (PV) of coal mining PT. Cipta Kridatama of IDR 17,981,921,072.4 according to the discount level. Benefit cost ratio (BCR) value from PT. Cipta Kridatama is 24.66, which means the project is feasible to operate with the profits from the project are greater than the expenses so that the project is acceptable or feasible to continue.
Analisis Produktivitas Alat dan Faktor yang Menghambat Produksi pada Kegiatan Pengupasan Overburden di Tambang Batubara Maisa Illahi Darni; Hisni Rahmi; Lydia Kartika Basaria Sitompul; Qurratul Ayun; Afni Nelvi; Ericson Ericson
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.v3i6.1236

Abstract

Overburden removal at Pit B did not meet the production targets for June and July 2025, which were set at 570,698.8 BCM and 400,986.56 BCM, respectively, while the actual production achieved was 507,071.66 BCM and 312,128.23 BCM. This study aims to determine the theoretical productivity of loading and hauling equipment and to identify the factors that hinder the achievement of production targets. The primary data used in this study include the cycle time of loading equipment, the cycle time of hauling equipment, bucket fill factor, and delay time. The secondary data required consist of swell factor, number of passes, bucket capacity, and available working time. The productivity of the loading equipment was 332.58 BCM/hour, while the hauling equipment achieved a productivity of 53.16 BCM/hour, with a match factor of 0.74. This indicates that the loading equipment experienced waiting time during loading operations due to the hauling equipment not operating optimally or at full capacity. The factors inhibiting the achievement of production targets include a narrow, waterlogged, and uneven working face; hard overburden material; a road grade of 16%, which exceeds the standard maximum of 12%; a curve road width of 15 m, which is less than the ideal minimum width of 19.95 m; undulating haul roads; narrow haul road width; and dusty road conditions.
Co-Authors Afni Nelvi Azwardi Ericson Ericson Hisni Rahmi Maisa Illahi Darni Restu Juniah Sitompul, Lydia Kartika Basaria