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Analysis of Decreased Limestone Production on the Effect of Rainfall with the Linear Regression Method Muhammad Tri Aditya; Helik Susilo; Yazid Fanani
West Science Interdisciplinary Studies Vol. 1 No. 10 (2023): West Science Interdisciplinary Studies
Publisher : Westscience Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58812/wsis.v1i10.334

Abstract

Limestone mining is a quarry system mining . Its production is influenced by weather factors, especially rainfall. This study aimed at determining the mathematical model wich is able to correlate the influence of rainfall on production of limestone. In addition, it analyzed the correlation between rainfall and limestone production using linear regression method. There are four important steps in this research. The first step is to collect data production and production factors. The second step is to process the data into a mathematical model using linear regression. The third step is to test the result of the mathematical model with the statistical test method. Then the fourth step is to analyze the mathematical model that has met the statistical test results. The results showed that the best mathematical model was: Log P = 0.502 x LOG((JO X Pr) 1.99 x (CH)-0.001) + 0.0002. In conclusion, the effect of rainfall toward the production derivation was very low. Besides, operation hours and productivity also affected production derivation.
Identification of Hazards and Risk Assessment in the Workplace of PT. Nusantara Traisser Site PT. Vale Indonesia Sorowako, South Sulawesi Mahindra, Fahni; Fanani, Yazid; Putri, Fairus Atika Redanto
Journal of Earth and Marine Technology (JEMT) Vol 4, No 2 (2024)
Publisher : Lembaga Penelititan dan Pengabdian kepada Masyarakat - Institut Teknologi Adhi Tama Suraba

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31284/j.jemt.2024.v4i2.5562

Abstract

The mining industry has a high risk of accidents, thereby prioritizing the understanding of safety and occupational health aspects. This research discusses the potential hazards and risk values for each work area of Nusantara Traisser Ltd. at the site of Vale Indonesia Pte Ltd. in 2023. Potential hazards came from field observations, and risk assessments were conducted by analyzing the probability, exposure, and consequence values of each identified hazard. These values were then adjusted according to the semi-quantitative risk level standards of William T. Fine. This research employed an observational approach using the AS/NZS 4360:2004 method for risk management. The results of the study indicated that the total number of potential hazards identified in the four work areas was 11, each with its respective risk value. The highest risk level reached 300, classified as priority 1, involving the hazard of mining traffic in the Anoa North Ground Training area (Mines HSOR Department) and the Enggano Coal and Sulfur Storage area. The recommended risk controls for each work area include elimination, engineering control, administration, and personal protective equipment (PPE).
Analysis of Decreased Limestone Production on the Effect of Rainfall with the Linear Regression Method Aditya, Muhammad Tri; Susilo, Helik; Fanani, Yazid
West Science Interdisciplinary Studies Vol. 1 No. 10 (2023): West Science Interdisciplinary Studies
Publisher : Westscience Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58812/wsis.v1i10.334

Abstract

Limestone mining is a quarry system mining . Its production is influenced by weather factors, especially rainfall. This study aimed at determining the mathematical model wich is able to correlate the influence of rainfall on production of limestone. In addition, it analyzed the correlation between rainfall and limestone production using linear regression method. There are four important steps in this research. The first step is to collect data production and production factors. The second step is to process the data into a mathematical model using linear regression. The third step is to test the result of the mathematical model with the statistical test method. Then the fourth step is to analyze the mathematical model that has met the statistical test results. The results showed that the best mathematical model was: Log P = 0.502 x LOG((JO X Pr) 1.99 x (CH)-0.001) + 0.0002. In conclusion, the effect of rainfall toward the production derivation was very low. Besides, operation hours and productivity also affected production derivation.
Petrografi dan Estimasi Sumberdaya Andesit pada WIUP Eksplorasi Daerah Rajekwesi, Kec. Kendit, Kab. Situbondo, Jawa Timur Widiatmoko, Fajar Rizki; Fanani, Yazid; Irwanto, Muhammad Agus; Suryawan, I Wayan Koko; Sari, Mega Mutiara; Putri, Ratih Hardini Kusuma
Geosapta Vol 8, No 2 (2022): JULI 2022
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/jg.v8i2.13438

Abstract

Kabupaten Situbondo memiliki banyak potensi sumber daya batuan, salah satunya adalah sumber daya berupa batuan andesit. Keterdapatan batuan andesit berasal dari produk gunungapi berjenis batuan beku yang terbentuk oleh aktivitas vulkanik intermediet dengan tipe magma andesitic. Penelitian ini dilakukan di wilayah IUP Eksplorasi Daerah Rajekwesi, Kecamatan Kendit, Kabupaten Situbondo untuk mengetahui kondisi geologi, petrografi batuan, dan volume sumberdaya dari batuan andesit yang terdapat dalam WIUP Eksplorasi. Berdasarkan hasil pemetaan geologi dan analisis petrografi menunjukkan bahwa Satuan Lava Kendit di daerah WIUP hadir seluas 100%, merupakan produk lava dari Gunungapi Ringgit, berisi batuan beku andesit dan sedikit tanah sebagai produk ubahan pelapukan dari batuan tersebut. Lebih detail lagi ditunjukkan dari hasil sampel batuan yang dianalisis menggunakan analisis petrografi terdapat kehadiran mineral plagioklas, kuarsa, feldspar dengan total komposisi 60% yang menunjukkan bahwa sampel tersebut berjenis batu andesit. Estimasi volume sumberdaya mengacu pada tiga jenis sumberdaya yaitu tereka, terunjuk, dan terukur. Berdasarkan hasil perhitungan sumberdaya didapatkan volume sumberdaya batu andesit tereka sebesar 267.555.503 Ton, terunjuk sebesar 23.129.687 Ton, dan sumberdaya terukur sebesar 1.227.962 Ton
Reclamation performance assessment at PT. Trubaindo Coal Mining in Melak field, West Kutai, East Kalimantan Province, Indonesia Gastramat, Maria Frumensia; Fanani, Yazid; Galih Cahyono, Yudho Dwi
Journal of Earth and Marine Technology (JEMT) Vol 5, No 1 (2024)
Publisher : Lembaga Penelititan dan Pengabdian kepada Masyarakat - Institut Teknologi Adhi Tama Suraba

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31284/j.jemt.2024.v5i1.5984

Abstract

Trubaindo Coal Mining Ltd. was established on March 13, 1990, as a subsidiary of Banpu Company. Based in Thailand, Banpu operates within the coal mining industry. Mining activities can have adverse effects, including habitat disruption for flora and fauna, morphological alterations, and reduced soil productivity. To mitigate these impacts, reclamation activities are essential. In compliance with PERMENHUT Number P.60/Menhut-II/2009 and the Minister of Energy and Mineral Resources Decree No. 1827 K/30/MEM/Year 2018, assessing the success of reclamation efforts is a critical step. This study aims to assess and evaluate reclamation activities conducted during the production operation phase at Trubaindo Coal Mining Ltd., focusing on land areas within Pit 3000 BK-04 NB and Pit 4500/P6200 BK03-04 SB1. The research employed a quantitative descriptive method, which included observations on land preparation, revegetation efforts, and final land stabilization. The findings revealed reclamation success rates of 87.3 and 83.1, indicating that the reclamation efforts were generally acceptable but required further improvements. Recommendations include soil pH correction, enhancement of drainage channels, and effective management of weeds, pests, and plant diseases.
Assessment of Drainage Efficiency in the Backfill Disposal Area of East Air Laya Mine Field at PT. Bukit Asam; A case study from Tanjung Enim, South Sumatera, Indonesia Suci, Fitri Indah Dwi; Fanani, Yazid; Cahyono, Yudho Dwi Galih
Journal of Earth and Marine Technology (JEMT) Vol 5, No 1 (2024)
Publisher : Lembaga Penelititan dan Pengabdian kepada Masyarakat - Institut Teknologi Adhi Tama Suraba

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31284/j.jemt.2024.v5i1.5942

Abstract

This research undertakes a thorough evaluation of the drainage systems in the disposal areas at PT. Bukit Asam during the October 2023 sequence, with the objective of understanding the factors that influence the capacity and efficiency of disposal mounds, the density of materials used, the geometric structure of disposal sites, and the design dimensions of open drainage channels. Utilizing the trapezium volume formula, the study meticulously calculated the planned disposal volumes at various elevations—2,289,155 Bank Cubic Meters (BCM) at 36 meters, 1,004,112 BCM at 42 meters, and 669,892 BCM at 48 meters—comparing these against an actual obtained volume of 1,799,111.4 BCM. The substantial variance between the planned and actual volumes highlights the critical challenges in achieving predictive accuracy in disposal management. Further assessments were conducted using the Dynamic Cone Penetrometer (DCP) with a 60-degree cone to determine the density and sub-grade California Bearing Ratio (CBR) of the barrier materials, which were found to be suitable for road construction, falling under sub-grade C classification. Moreover, the Gumbel method was applied to devise the dimensions of a trapezoidal open channel, designed to facilitate a drainage capacity of 100,432.996 cubic meters per hour over a length of 3000 meters. The channel dimensions included a bottom width of 1.1 meters, a top width of 2.3 meters, a depth of 2.4 meters, and a 45-degree slope, with a Manning’s coefficient (n) of 0.03. This detailed inquiry not only provides vital insights into the operational adjustments required for effective drainage but also promotes the adoption of sustainable and safe disposal management practices in the mining industry. The findings from this study serve as a pivotal reference for future improvements in the design and management of mine waste disposal systems
Optimized Drainage System Design for Andesite Mining at PT. Rolas Nusantara Tambang, Kejayan, East Java Melang, Antonius Longan; Sari, Avellyn Shinthya; Fanani, Yazid
Journal of Earth and Marine Technology (JEMT) Vol 4, No 1 (2023)
Publisher : Lembaga Penelititan dan Pengabdian kepada Masyarakat - Institut Teknologi Adhi Tama Suraba

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31284/j.jemt.2023.v4i1.4793

Abstract

This study presents a systematic approach to designing a filtration system aimed at efficiently managing rainwater and surface runoff outside mining areas. Utilizing a quantitative method, the data collection predominantly involves secondary sources. The data is processed through a series of steps: rainfall projection, delineation of rainwater catchment areas, calculation of rainfall intensity and inflow rate, and determination of open channel and settling pond dimensions. The designed open channels have a trapezoidal shape with specific dimensions including a base width of 0.51 m, a side length of 0.62 m, a slope angle of 60°, and a channel depth of 0.54 m. These channels span a total length of 2.216 m. The accompanying settling ponds are rectangular with dimensions encompassing a length of 31 m, a width of 11 m, a depth of 6 m, and an area of 341 m². These ponds have a volume capacity of 2,046 m³, achieving an impressive 90.89% efficiency. Notably, maintenance of the settling pond involves periodic dredging using the Kobelco SK200 Excavator at intervals of roughly 16 years (5,817 days). Given that this maintenance duration surpasses the expected mine lifespan, no further interventions are required for the pond during the mine's operational period.
Productivity Analysis of Digging, Loading, and Hauling Equipment in Overburden Removal Activities at PT. Anugrah Borneo Sinergy in Keramat Mina field, South Kalimantan, Indonesia Taufiq, Muhammad Rusdi; Putri, Fairus Atika Redanto; Fanani, Yazid
Journal of Earth and Marine Technology (JEMT) Vol 5, No 1 (2024)
Publisher : Lembaga Penelititan dan Pengabdian kepada Masyarakat - Institut Teknologi Adhi Tama Suraba

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31284/j.jemt.2024.v5i1.6426

Abstract

This study evaluates the productivity of loading and hauling equipment at Anugrah Borneo Sinergy Ltd., explicitly focusing on compatibility between these units and identifying obstacles in overburdening material transfer activities. Employing a direct observation method at pit 1 in Keramat Mina Village, this research spanned a day shift from August 20 to September 20, 2022. Productivity measurements were taken for the Sany SY 365 H Excavator and the Hino 500 FM 260 JD Dump Truck, alongside employee interviews for supplementary data. Results indicate that the excavator's productivity varied daily, averaging 136.07 Bcm/hour, while the dump truck averaged 56.19 Bcm/hour over the same period, both below the target of 170 Bcm/hour. Initial compatibility assessment yielded a match factor of 0.83, which improved to 1.18 after optimizing cycle times. Simulating the compatibility with an additional hauler resulted in a perfect match factor of 1. Key obstacles included extended waiting and haul times, inefficiency, and an imbalance in the number of loaders versus haulers. Recommendations to enhance productivity involve optimizing loading efficiency and reducing haul, return and wait times. Post-optimization, productivity improved significantly, reaching 163.28 Bcm/hour for loaders and 88.29 Bcm/hour for haulers, thus meeting production goals. Adding another hauling unit could sustain these improvements by achieving optimal equipment compatibility.
Triangulation Method for Limestone Estimation in CV. Atang Village, Jemparing: Insights from Long Ikis, Paser District, East Kalimantan Syahid, Alwi; Fanani, Yazid; Cahyono, Yudho Dwi Galih
Journal of Earth and Marine Technology (JEMT) Vol 4, No 1 (2023)
Publisher : Lembaga Penelititan dan Pengabdian kepada Masyarakat - Institut Teknologi Adhi Tama Suraba

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31284/j.jemt.2023.v4i1.4822

Abstract

The Atang Are Abadi Firm is a limestone mining company that has carried out further exploration activities to determine the volume, density, and continuity of grades in the exploration area. The exploration activities conducted core drilling at 17 drilling points, a distance of less than 250 meters, and an area of 19.36 ha. This research determined the geological domain of limestone layers with parameters of CaO content greater than 53% through a triangulation (triangle) method. Meanwhile, the cut-and-fill method was used for resource and reserve calculations. The resource acquisition in limestone layers with a content of more than 53% reached 25,682,831.9 BCM, and the acquisition of reserves in limestone layers with a content of more than 53% had 6,788,073.56 BCM. The estimation results of limestone resources and reserves obtained based on the Indonesian National Standard 4726: 2019 are included in the classification of measured limestone resources and proven limestone reserves.
Estimasi Sumberdaya Andesit Menggunakan Metode Cross Section Pada Blok Eksplorasi Di PT. Bumi Kejayan Desa Benerwejo, Kecamatan Kejayan, Kabupaten Pasuruan, Provinsi Jawa Timur Susanto, Muhammad Nizarudin Agus; Yuwanto, Sapto Heru; Fanani, Yazid
Prosiding Seminar Nasional Sains dan Teknologi Terapan 2024: Menjembatani Energi Berkelanjutan dan Ekonomi Hijau melalui Transformasi Riset dan Teknologi T
Publisher : Institut Teknologi Adhi Tama Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

PT. Bumi Kejayan merupakan perusahaan yang bergerak di bidang pertambangan batu andesit yang berlokasi di Desa Benerwejo, Kecamatan Kejayan, Kabupaten Pasuruan, Provinsi Jawa Timur dengan luas areal IUP 40,01 Ha. PT. Bumi Kejayan melakukan kegiatan eksplorasi di dalam areal IUP dengan luasan blok eskplorasi 8,6 Ha, sehingga sebelum dilakukan kegiatan penambangan perlu di lakukan perhitungan estimasi sumberdaya. Tujuan dilakukan perhitungan estimasi sumberdaya pada Blok Eksplorasi PT. bumi Kejayan untuk mengetahui kualitas serta kuantitas batu andesit pada Blok Eksplorasi. Dalam penelitian ini metode yang digunakan untuk mengestimasi sumberdaya yaitu metode Cross Section dengan penerapan pedoman perubahan bertahap (rule of gradual change), Analisis sebaran batu andesit menggunakan data geolistrik. Volume estimasi sumberdaya diperoleh dengan menggunakan bantuan perangkat lunak surpac 6.6.2. Berdasarkan hasil Analisa dan pembahasan, estimasi sumberdaya pada blok eskplorasi PT. Bumi Kejayan termasuk dalam klasifikasi sumberdaya terukur dan diketahui di bawah permukaan blok eskplorasi terdapat 3 lapisan litologi yaitu top soil, breksi dan 2 lapisan andesit masing – masing lapisan litologi di estmasi menggunakan metode cross section dengan jarak antara sayatan penampang sejauh 50 meter sehingga diperoleh 9 section dan didapatkan jumlah volume top soil 108,694.63 m3, breksi 1,496,323.73 m3, andesit 01 68,861.60 m3 dan andesit 02 diperoleh volume sebesar 1,168,595.00 m3.
Co-Authors Agung Wicaksono Ahmad Fawaidun Nahdliyin Al Fakih, Salahudin Aldy Elriq Syahputra Alwi Syahid Andres Kevi Paki Anip Dwi Saputro, Anip Dwi Aprilia Dwi Astuti Aprilia Dwi Astuti, Aprilia Dwi Arief Rahman Yusuf Avellyn Shinthya Sari Avellyn Shintia Sari Azis, Muhammad Jundi Haikal Bahar, Hendra Berhitu, Theo Destinaba, Rilianisa Devananda Donny Rusdian Pratama Donny Rusdian Pratama eko purnomo Eko Purnomo Faishol Amir Faishol Amir, Faishol Fajar Rizki Widiatmoko Fajar Rizki Widiatmoko Fajar Rizki Widiatmoko Fajar Rizki Widiatmoko Fika Karunia Filda Oktaviani Erong Galih Cahyono, Yudho Dwi Gastramat, Maria Frumensia Grains Silvester Sapan Hardi Wahono Helik Susilo Hertika, Fety Fitriana Irmawati, Erni Irwanto, Muhammad Agus Jone, Yohanes Lakon Utamakno Mahardhani, Ardhana Januar Mahindra, Fahni Mega Mutiara Sari Melang, Antonius Longan Miftahul Rahman Muchamad Kurniawan, Muchamad Muhammad Agus Irwanto Muhammad Jundi Haikal Azis Muhammad Tri Aditya Nahdliyin, Ahmad Fawaidun Nazario Gomez Noche Lorensius Sairdekut Paki, Andres Kevi Pratama, Donny Rusdian Putri, Fairus Atika Redanto Putri, Ratih Hardini Kusuma Ratih Hardini Kusuma Putri Reky Sasauw Restu Mufanti, Restu Rilianisa Destinaba Rino Firsa Putra Syahanda Rosidha, Laela Sairdekut, Noche Lorensius Salahudin Al Fakih Salahudin Al Fakih Salsabila, Unik Hanifah Sapan, Grains Silvester Sapto Heru Yuwanto Sari, Avellyn Shintia Sari, Era Nitika Sari, Mega Mutiara Sasauw, Reky Simela Talaohu Simela Talaohu Siti Agustini, Siti Suci, Fitri Indah Dwi Suryawan, I Wayan Koko Susanto, Muhammad Nizarudin Agus Syahanda, Rino Firsa Putra Syahid, Alwi Syamsul Arifin Talaohu, Simela Taufiq, Muhammad Rusdi Theo Berhitu Titirloloby, Aloysius Usman Usman Usman Usman Utamakno, Lakon Vincent, Vittorio Wachid, Aldi Wahono, Hardi Widiatmoko, Fajar Rizki Yohanes Jone Yohanes Jone Yudho Dwi Galih Cahyono Yuliana Nur