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Heri Prabowo
Departemen Teknik Pertambangan, Fakultas Teknik, Universitas Negeri Padang
Agriculture, Biological Sciences & Forestry Astronomy Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Earth & Planetary Sciences Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mathematics Mechanical Engineering

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Menghitung Debit Air Limpasan di PT. Kalimantan Prima Persada Jobsite PELH Desa Kebur, Kecamatan Merapi Barat, Kabupaten Lahat, Provinsi Sumatera Selatan Rijalnur Hidayatullah; Heri Prabowo
Journals Mining Engineering : Bina Tambang Vol 8, No 3 (2023): Journals Mining Engineering: Bina Tambang
Publisher : Departemen Teknik Pertambangan FT UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/bt.v8i3.126017

Abstract

PT. Kalimantan Prima Persada Jobsite PELH is mining company operating in the field of coal mining contractors. Mining system carried out by PT. Kalimantan Prima Persada Jobsite PELH use the open pit mining method, during rainy season, problem that is often found is water. Water that comes from above the ground surface (runoff water) and water that is below the ground surface (ground water). Runoff water and ground water are the main things that must be considered so that they do not disturb and damage the mining location. Therefore, this report was written to find out how much runoff water enters the mining front area. The stages used in calculating runoff water discharge are calculating the catchment area area, calculating planned rainfall data using the Log Pearson III method, calculating rain intensity using the Monnonobe method, calculating runoff water discharge using the rational method. Based on calculations, the catchment area in Pit PE PT was obtained. Kalimantan Prima Persada Jobsite PELH is 13,821 Ha or 0.13821 km2, the average daily maximum rainfall in the last 10 years is 547.4 mm/day, arranged rainfalll is 696.13 mm/day, intensity of rain is 398.66 mm/day, and the runoff discharge is 49,626 m3/hour.
Assessment of Productivity and Compatibility of Komatsu PC 2000 Loader and Komatsu HD 785 Transport Equiptment in Overburden Stripping Activities in the North Pit of Muara Tiga Besar Mining Area at PT. Bukit Asam, Tbk. Tanjung Enim, South Sumatra Putra Alfarizi; Heri Prabowo
Journals Mining Engineering : Bina Tambang Vol 9, No 1 (2024): Journals Mining Engineering: Bina Tambang
Publisher : Departemen Teknik Pertambangan FT UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/bt.v9i1.127770

Abstract

PT. Bukit Asam, Tbk is a coal mining company with an IUP area of 14,987 Ha (PT Bukit Asam, Tbk, 2018), the mining location is located in Tanjung enim, Lawang Kidul sub-district, Muara Enim Regency, South Sumatra Province which is divided into 3 Mining Business License Areas namely: Air Laya Mine (TAL), West Bangko Mine and Muara Tiga Besar Mine. Coal mining in Muara Tiga Besar Mining area of PT Bukit Asam company. Using Komatsu PC 400 for coal getting activities, while for overburden uses Komatsu PC 2000, PC 1250 and PC 800. For transportation equipment in the form of Dump Truck HINO 500 FM 320 TI for coal getting activities and HD 785 for overburden.  The productivity value of the PC2000 digging tool for overburden is 750.02 bcm / hour, while for HD for overburden is 96.866 bcm / hour. For the MF (match factor) value on the PC 2000 with HD 785 for overburden is 0.89, meaning that there is a mismatch between the PC 2000 and HD 785 because the MF value < 1 so that there is waiting time for the PC 2000 digging tool for the HD 785 conveyance.
Calculation of Runoff Discharge in the Coal Mining Open Pit Mine Conveyance System at PT. Kalimantan Prima Persada Jobsite PELH Kebur Village, West Merapi District, Lahat Regency, South Sumatra Province Fajar Rofiescha; Rusli HAR; Heri Prabowo
Journals Mining Engineering : Bina Tambang Vol 9, No 1 (2024): Journals Mining Engineering: Bina Tambang
Publisher : Departemen Teknik Pertambangan FT UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/bt.v9i1.127562

Abstract

PT. Kalimantan Prima Persada Jobsite PELH is a company operating in the field of coal mining contractors. Mining carried out by PT. Kalimantan Prima Persada Jobsite PELH uses the open pit mining method, during the rainy season, the problem that is often found is water. Water that comes from above the ground surface (runoff water) and water that is below the ground surface (ground water). Runoff water and ground water are the main things that must be considered so that they do not disturb and damage the mining location. Therefore, this report was written to find out how much runoff water enters the mining front area. The stages used in calculating runoff water discharge are calculating the catchment area area, calculating planned rainfall data using the Log Pearson III method, calculating rain intensity using the Monnonobe method, calculating runoff water discharge using the rational method. Based on calculations, the catchment area in Pit PE PT was obtained. Kalimantan Prima Persada Jobsite PELH is 540,18 Ha or 5,40 km2, the average daily maximum rainfall in the last 10 years is 547.4 mm/day, planned rainfall is 385,140 mm/day, rain intensity is 80,87 mm/day, and the runoff discharge is 30.204,27 m3/hour. 
Effect of Water and Chemical Spray on Quality Parameters TM, Ash, and CV of E4700 Product Coal at PT Adaro Indonesia Site Kelanis, South Barito Regency, Central Kalimantan Rinaldi Suntana; Heri Prabowo
Journals Mining Engineering : Bina Tambang Vol 9, No 2 (2024): Journals Mining Engineering: Bina Tambang
Publisher : Departemen Teknik Pertambangan FT UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/bt.v9i1s.127897

Abstract

PT Adaro Indonesia is a coal producer that produces several types of coal using standard doses. However, to improve the quality of E4700 coal, the company needs to examine the effect of chemical use on coal quality. This study aims to determine the effect of the use of dust suppressant chemicals on the value of coal quality parameters, identify variables that have a significant effect on the calorific value of coal, and analyze the concentration level of chemicals that have a significant effect on changes in the value of quality parameters in E4700 coal. Based on the analysis, after spraying with chemicals, there is a change in the value of coal quality parameters. When using a chemical concentration of 25 ppm, there was a change in the value of Total Moisture by -0.62%, Ash by -0.04%, and calories (CV) by 47 cal/g. At a concentration of 35 ppm, the Total Moisture value changed by -1.58%, Ash by -0.16%, and calories (CV) by 117 cal/g. And at 50 ppm concentration, there was a change in Total Moisture value of -1.96%, Ash of -0.24%, and calories (CV) of 142 cal/g. These results indicate that the use of chemicals affects the quality of E4700 coal. This study also used multiple linear regression statistical tests to obtain the significance value of the Total Moisture variable.
Analysis of Slope Stability in the Coal Mining Area of KUD Sinamar Sakato, Jorong Sinamar, Nagari Sinamar, Asam Jujuhan, Dharmasraya, West Sumatera Dimas Agung Hermawan.HL; Yoszi Mingsi Anaperta; Heri Prabowo; Sultan Muhammad Taufik
Journals Mining Engineering : Bina Tambang Vol 9, No 1 (2024): Journals Mining Engineering: Bina Tambang
Publisher : Departemen Teknik Pertambangan FT UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/bt.v9i1.127725

Abstract

KUD Sinamar Sakato conducts mining with open pit mining method, an open pit mining will always face the problem of slope stability, if the slope formed from the excavation is not considered properly, it can lead to potential landslides. Based on observation data, KUD Sinamar Sakato has a slope with a height of 78 metres and an angle of 78o, KUD Sinamar Sakato also does not have information about the physical and mechanical properties of the slope of the Mining Pit, making it difficult for companies to conduct geotechnical studies. Based on the analysis of safety factors using slide v 6.0 software using the Morgenstern-Price method, the slopes of KUD Sinamar Sakato are unsafe in saturated conditions which have FK of 1.095, so it is necessary to make improvements to the slope geometry, the improvements made are reducing the slope of the slope to 73o and the resulting saturated FK is 1.360, the slope is in a safe condition, then the second recommendation is to add a bench without changing the angle, where the bench is added at a height of 35 metres with a bench width of 4 metres, the saturated FK is 1.361, where the slope is in a safe condition.
Analisis Keserasian Alat Gali Muat dan Angkut Batubara Dalam Produksi Overburden Di Pit Alam 1-3 Di PT. Muara Alam Sejahtera, Kabupaten Lahat, Sumatera Selatan Ari Dwi Ananda; Harizona Aulia Rahman; Heri Prabowo
Journals Mining Engineering : Bina Tambang Vol 8, No 3 (2023): Journals Mining Engineering: Bina Tambang
Publisher : Departemen Teknik Pertambangan FT UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/bt.v8i3.126005

Abstract

Excavation equipment is loaded by excavators and transported by coal dump trucks from the mining front to the stockpile and transportation of overburden to the disposal. Smooth production must of course be supported by the type of excavator with the appropriate bucket capacity of the dump truck used so that there is no queue so that coal production is in accordance with the plan and is more efficient for using production equipment and affects costs later. Coal excavation-loading equipment production on Hitachi ZX350 LC excavator in one month amounted to 95.984 tons / month. And the production of Dongfeng Tianlong KC 4 × 6 dump truck conveyance in one month is 14.953 tons / month.The production of overburden excavation tools on the XCMG XE-1250 excavator in one month amounted to 194.548,73 Bcm / month. And the production of LGMG CMT 106 conveyance in one month amounted to 21.843,5 Bcm / month. To make the match factor value = 1.00 or close to 1.00, it is better to reduce it to 9 conveyance tools (dump trucks) only (obtained value = 1.01) for the overburden loading and unloading travel process to the disposal area. And for coal equipment loading and unloading travel, namely the addition of conveyance tools (dump trucks) is needed to be 6 dump trucks (obtained value 0.93) in order to achieve compatibility of excavation-loading tools so that transportation and efficient use of tools.
pH Neutralization of Acid Mine Drainage Using Open Limestone Channel with Addition of Fly Ash and Silica Sand on Laboratory Scale Testing Rizky Ananda; Rusli HAR; Heri Prabowo; Harizona Aulia Rahman
Journals Mining Engineering : Bina Tambang Vol 9, No 1 (2024): Journals Mining Engineering: Bina Tambang
Publisher : Departemen Teknik Pertambangan FT UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/bt.v9i1.127590

Abstract

This research aims to neutralize the pH of acid mine drainage using a passive open limestone channel method using limestone as a neutralizing agent, which is then modified by adding other test materials such as fly ash and silica sand. This test will be carried out through three repetitions which will later be called the AA-0 Combination, AA-1 Combination, and AA-3 Combination. The pH value of the acid mine drainage before the test was 3.75 and after the test was carried out, the final pH combination AA-0 was 7.39; The final pH of the AA-1 combination was 7.3; and AA-2 Combination The final pH is 7.21.
Pengaruh Penggunaan Blower & Es Batu Pada Alat Simulasi Ventilasi Tambang Bawah Tanah Dalam Upaya Penurunan Suhu Untuk Skala Laboratorium Wuni Aprila; Bambang Heriyadi; Heri Prabowo; Jukepsa Andas
Journals Mining Engineering : Bina Tambang Vol 8, No 3 (2023): Journals Mining Engineering: Bina Tambang
Publisher : Departemen Teknik Pertambangan FT UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/bt.v8i3.126020

Abstract

Increased temperatures in Underground Mines can cause uncomfortable working conditions and negatively impact workers' health. If there is a temperature or increase in temperature that exceeds the standards determined by the Decree of the Director General of Minerals and Coal, Ministry of Mineral Resources and Mineral Resources No. 185.K/30DJB/2019, it is important to identify efforts to reduce the temperature in the work environment. This research wants to reveal the effect of using ice cubes to reduce the temperature which is simulated in an underground mine ventilation simulation tool in the laboratory, then the results obtained will be implemented in field conditions and the results will be correlated with needs in the field. The data taken to obtain results using a simulation tool in the laboratory was done using 2 experiments, where experiment 1 used 2 kg of ice cubes, at dry temperatures it could not reduce 1°C while at wet temperatures it could reduce ±1°C. Then in experiment 2 using 5kg ice cubes, the results showed that the dry temperature could decrease by ± 1°C and the wet temperature could decrease by ± 2°C. For humidity when using ice cubes there is not much change, only around ±5% but still remains within the threshold value.The correlation results when placed in the field from simulation tools in the laboratory are that in experiment 1 it requires 25 kg of ice cubes to reduce 1°C in wet temperature only, and in experiment 2 it requires 61 kg of ice cubes to reduce 1°C in dry temperature and 2°C at wet temperatures.To obtain correlation results, they are placed in field conditions in accordance with established standards, for Tunnel A location requires 183 kg of ice cubes, Tunnel B 244 kg of ice cubes, Tunnel A to Tunnel B as much as 183 kg of ice cubes, Branch 1 Tunnel 2 had 244 kg of ice cubes and Branch 2 Tunnel B had 305 ice cubes.
Analisis Klasifikasi Massa Batuan dengan Metode Rock Mass Rating dan Slope Mass Rating untuk Kestabilan Lereng pada Pit Utara PT Alam Semesta Sukses Batubara Anggi Saputra; Heri Prabowo
Journals Mining Engineering : Bina Tambang Vol 10, No 1 (2025): Journals Mining Engineering: Bina Tambang (On Progress)
Publisher : Departemen Teknik Pertambangan FT UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/bt.v9i3.130435

Abstract

Penambangan dapat dilakukan dengan tambang tertutup dan terbuka, sistem penambangan terbuka membutuhkan analisis lereng yang efektif untuk diterapkan. Metode yang dapat dipakai yaitu dengan metode geomekanika dan analisis tingkat kestabilan sebuah lereng. Metode geomekanika ini meliputi data Rock Mass Rating (RMR) dan Slope Mass Rating (SMR) yang bisa ditentukan dengan perhitungan data pemboran dan juga dari uji laboratorium. Penelitian ini berguna pada saat mendeskripsikan kondisi, klasifikasi dan kestabilan lereng. Berdasarkan hasil perhitungan RMR yang dilakukan yaitu lereng 1 dengan bobot RMR yaitu 62 poin kelas II. Pada lereng 2 dengan bobot RMR yaitu 72 poin, kelas II. Pada lereng 3 didapatkan nilai bobot total dari RMR yaitu 73 poin kelas II. Lereng 1, 2 dan 3 sama dengan deskripsi batuan baik, nilai kohesi dari kelas massa batuannya yaitu berada pada interval 300-400 kPa, dan sudut geser dalam interval 35⁰-45⁰. Berdasarkan hasil perhitungan SMR yang dilakukan yaitu pada lereng 1 nilai SMR yaitu 55,7 poin, kelas III dengan deskripsi normal, masih tergolong stabil sebagian, longsoran potensialnya baji dan kekar, kemudian stabilisasi secara sistematis. Pada lereng 2 nilai SMR yaitu 65,7 poin, kelas II dengan deskripsi baik, masih tergolong stabil, longsoran potensialnya blok batuan, dan stabilisasi secara okasional. Pada lereng 3 didapatkan nilai SMR yaitu 73,9 poin, kelas II deskripsi sama dengan lereng sebelumnya.
Analisis Perubahan Parameter Kualitas Batubara Seam 300 CR3 di Channel-Pit dan Stockpile Menggunakan Path Analysis di PT Kuansing Inti Makmur, Desa Tanjung Belit, Kecamatan Jujuhan, Kabupaten Muaro Bungo, Provinsi Jambi Thessania Sherry Ariani Zebua; Fadhilah Fadhilah; Heri Prabowo
Journals Mining Engineering : Bina Tambang Vol 10, No 1 (2025): Journals Mining Engineering: Bina Tambang (On Progress)
Publisher : Departemen Teknik Pertambangan FT UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/bt.v9i3.130656

Abstract

Masalah yang kerap muncul terkait kualitas batubara yaitu terdapat perubahan pada nilai kalori batubara saat dilakukan pengujian pada sampel batubara di front penambangan dan stockpile. Oleh karena itu perlu dilakukan pengendalian kualitas batubara (coal quality control) mulai dari penambangan, penumpukan di stockpile, hingga tahap pengiriman kepada konsumen. Penelitian ini bertujuan untuk menganalisis perubahan yang terjadi pada parameter kualitas batubara seam 300 CR3 di channel pit dan stockpile PT. Kuansing Inti Makmur. Parameter kualitas batubara yang digunakan pada penelitian ini adalah total moisture, ash content, total sulfur, dan  nilai kalori. Pada penelitian ini menggunakan metode statistik seperti statistik deskriptif untuk mengetahui gambaran umum dari parameter kualitas batubara seam 300 CR3 dan statistik inferensi seperti analisis regresi linear dan analisis jalur (path analysis) untuk mengetahui perubahan pada parameter kualitas batubara di channel pit dan stockpile beserta pengaruh total moisture, ash content, total sulfur terhadap nilai kalori batubara. Adapun hasil penelitian ini diperoleh parameter ash content sangat dominan berpengaruh terhadap nilai kalori dengan koefisien beta sebesar 0,996, 0,976, and 0,937, total moisture dengan pengaruh sedang terhadap nilai kalori dengan koefisien beta sebesar 0,671, 0,261, and 0,212. Dan total sulfur memiliki pengaruh yang terkecil terhadap nilai kalori dengan koefisien beta sebesar 0,003, 0,124, and 0,037. Berdasarkan analisis yang telah di lakukan, faktor-faktor yang dapat mempengaruhi perubahan pada nilai parameter kualitas batubara adalah proses kegiatan penambangan, proses pengangkutan batubara, material pengotor pada proses loading, material basement stockpile,dan cuaca dan iklim.  Berdasarkan hasil tersebut maka dilakukan beberapa upaya untuk menjaga kualitas batubara seperti penyiraman jalan angkut secara rutin, penerapan prinsip FIFO (First In First Out), pemisahan batubara terbakar dengan menggunakan alat berat, pengaturan aliran air pada stockpile, memastikan unit yang bekerja dalam keadaan bersih, perketat selective mining dan tetap menjaga kebersihan stockpile.
Co-Authors Alfa Candra Yarsila Alifa Alifa Amrina, Elita Anggi Saputra Ansosry Ansosry Ari Dwi Ananda Arief Dwi Purnomo aufa fikri abdillah Aulia Mutiara C Bambang Heriyadi Benti Jul Sosantri Clara Febriani Dedi Yulhendra Dian Kurnia Dimas Agung Hermawan.HL Eka Retno Sari Eric Sandeir Fachrur Isgianda Fadhilah Fadhilah Fadhilah Fadhilah Fajar Rofiescha Fakhri Afif Rifa&#039;i Fathi Aulia Dhanio Zuhri Fikriansyah Ersyad Fitri Rahma Yenni Gary Aprio Gilang Oktafi Hendri Hafiz Zakwan Harizona Aulia Rahman Hendra Hendra Heru Premana Ilal Fajri Setiawan Jukepsa Andas Lulu Dwi Oktari M Adli Fikri M. Ravil Akbar Elfiantra Maulana Assidikkey Iqra Monica Fadhillah Afrina Wati Muhamadinda Debeno Habibie Muhammad Abbil Raihan Muhammad Dian Muhammad Fikri Muhammad Yazi&#039;d Muhammd Thoriq Mulya Gusman Mutia Zara Nurul Anisa Ardianti Osmaini Sutra Haryati Putra Alfarizi Rahmad Thry Arswendo Rahul Hutmi Raimon Kopa Riandy Kurniawan RIDHO FADHIL HERNAWAN Rijalnur Hidayatullah Riki Rinaldo Riko Maiyudi Rinaldi Suntana Riri Rahmahwati Joni Risma Erwi Gusvita Rizki Agusta Yusra Rizky Ananda Rudi Anarta Rudy Anarta Rully Septian Rusli HAR Saldy, Tri Gamela Sultan Muhammad Taufik Sumarya Sumarya Tamrin Kasim Thessania Sherry Ariani Zebua Wina Partiwi Wuni Aprila Yoszi Mingsi Anaperta Yunas ril Yunasril Yunasril