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All Journal JIM UPB (Jurnal Ilmiah Manajemen Universitas Putera Batam) Brilliance: Research of Artificial Intelligence Jurnal Riset Teknik Pertambangan Bandung Conference Series: Mining Engineering Jurnal Pengabdian Ibnu Sina Tashdiq: Jurnal Kajian Agama dan Dakwah Jurnal Pengabdian Rekayasa Sistem ETHOS: Jurnal Penelitian dan Pengabdian kepada Masyarakat Prosiding Seminar Nasional Ilmu Sosial dan Teknologi (SNISTEK)
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Journal : Jurnal Riset Teknik Pertambangan

 1 
Perencanaan dan Pentahapan Penambangan Nikel PT. Hillconjaya Sakti Site Indrabakti Mustika Andi Maulana Yusuf; Yuliadi; Elfida Moralista
Jurnal Riset Teknik Pertambangan Volume 4, No. 2, Desember 2024, Jurnal Riset Teknik Pertambangan (JRTP)
Publisher : UPT Publikasi Ilmiah Unisba

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29313/jrtp.v4i2.5215

Abstract

Abstrak. PT Hillconjaya Sakti operates a 512-hectare nickel mining area with a 2024 production target of 2,500,000 tons/year, an increase from 1,800,000 tons/year in 2023, necessitating updates in production planning and phase scheduling. Mining designs for the Longori, Silae, and Kolaka blocks follow Indonesian regulations and use Cut of Grade values: Lot 1 Ni 1.45, Lot 2 Ni 1.30, and Lot 3 Ni 1.25. Equipment availability is 86% with 54% utilization, achieving ore extraction efficiency of 71.1% and overburden removal efficiency of 74%. Excavator productivity reaches 240.26 tons/hour for ore and 275.98 BCM/hour for overburden, while dump trucks achieve 29.1 tons/hour and 55.17 BCM/hour, respectively. Reserves are estimated at 2,520,387 tons, adjusted to 2,515,753 tons with a stripping ratio of 1.44, and the 2024 disposal capacity is set at 3,618,793 BCM, supporting the company’s scaling and operational efficiency goals. Abstract. PT Hillconjaya Sakti is a nickel mining company with a 512 ha IUP area, aiming for a 2024 production target of 2,500,000 Tons/Year, up from 1,800,000 Tons/Year in 2023. This increase will impact the production plan and mine sequencing for 2024. The research aims to determine the production target, equipment productivity, reserve estimates based on the mine opening design, and mine sequencing plans.The mining designs were created in accordance with Indonesian mining regulations, including the Law No. 3 of 2020 and Ministerial Decree No. 1827 of 2018. The designs cover three mining blocks: Longori, Silae, and Kolaka, with classifications based on the company’s Cut of Grade values (Ni 1.45, Ni 1.30, and Ni 1.25). Mechanical equipment availability is 86%, with a 54% usage rate. The working efficiency for ore extraction is 71.1%, and for overburden removal, it's 74%. Productivity for ore extraction is 240.26 Tons/Hour for Backhoe and 29.1 Tons/Hour for Dump Truck. For overburden removal, productivity is 275.98 BCM/Hour for Backhoe and 55.17 BCM/Hour for Dump Truck. The estimated reserves based on the pit design are 2,520,387 tons. After completing the mine disposal plan, the reserves are reduced to 2,515,753 tons, with a stripping ratio of 1.44. The disposal capacity for 2024 is estimated at 3,618,793 BCM.
Pengaruh Geometri Dan Penggunaan bahan Peledak Di kuari Batu Andesit Terhadap Jarak Flyrock: Studi Kasus Pada Infrastruktur Kereta Cepat Jalur Jakarta-Bandung Purwakarta Jati Nugroho; Yuliadi; Yunus Ashari
Jurnal Riset Teknik Pertambangan Volume 4, No. 2, Desember 2024, Jurnal Riset Teknik Pertambangan (JRTP)
Publisher : UPT Publikasi Ilmiah Unisba

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29313/jrtp.v4i2.5278

Abstract

Abstrak. Panghegar berada dekat dengan infrastruktur kereta cepat jalur Jakarta-Bandung dengan jarak sekitar ± 80 m. Infrastruktur dari kereta cepat tersebut merupakan obyek vital nasional yang menyangkut hajat hidup orang banyak, kepentingan negara dan sumber pendapatan negara yang bersifat strategis. Oleh karena itu dari infrastruktur Kereta Cepat Jalur Jakarta-Bandung tersebut harus dijaga kondisinya dari adanya gangguan dari luar termasuk aktivitas penambangan yang berada dekat dengan jalur kereta tersebut. Untuk menjaga kondisi objek vital nasional Kereta Cepat Jakarta-Bandung, perlu dilakukan kajian akibat dampak negatif peledakan (flyrock). Sehingga dari penelitian ini ditujukan untuk mengetahui jarak lemparan terjauh, geometri yang berpengaruh terhadap lemparan flyrock dan prediksi lemparan flyrock dari peledakan yang dilakukan. Untuk mengetahui hasil tersebut digunakan pendekatan dengan analisis regresi dan korelasi serta menggunakan beberapa prediksi empiris. Dari penelitian ini dapat dilihat bahwa parameter yang paling berpengaruh terhadap jarak lemparan flyrock yaitu powder factor dengan nilai koefisien korelasi sebesar 0,943 dan stemming dengan nilai koefisien korelasi sebesar -0,9. Prediksi empiris yang dapat digunakan pada CV Panghegar yaitu oleh Shakeri, 2022 dengan hasil standar deviasi 5,57 mendekati hasil lemparan aktual flyrock. Dengan demikian dampak negatif kegiatan peledakan (flyrock) tidak berpengaruh atau menganggu infrastruktur jalur kereta cepat.   Abstract. CV Panghegar is located approximately ±80 meters from the Jakarta-Bandung High-Speed Train Line, a vital national infrastructure critical to public welfare, state interests, and revenue. To ensure the safety of this infrastructure from potential impacts of nearby mining activities, particularly blasting, a study was conducted to assess the maximum flyrock throw distance, geometric factors influencing flyrock behavior, and predictive methods for flyrock throws. The study utilized regression and correlation analysis, revealing that powder factor (correlation coefficient 0.943) and stemming (correlation coefficient -0.9) are the most influential parameters affecting flyrock throw distance. Among various empirical models, the Shakeri (2022) method was identified as the most accurate for application in CV Panghegar, with a standard deviation of 5.57 closely matching observed flyrock data. The results confirm that the negative impacts of blasting activities, specifically flyrock, do not pose a threat to or interfere with the Jakarta-Bandung High-Speed Train Line infrastructure, thereby ensuring its safety and operational stability.
Pengaruh Flyrock Hasil Peledakan terhadap Sarana Prasarana Bendungan Tiga Dihaji Khoerunnisa Prihatini; Yuliadi; Dwihandoyo Marmer
Jurnal Riset Teknik Pertambangan Volume 5, No. 1, Juli 2025, Jurnal Riset Teknik Pertambangan (JRTP)
Publisher : UPT Publikasi Ilmiah Unisba

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29313/jrtp.v5i1.6604

Abstract

Abstrak.Pada proyek pemberian batuan di lokasi Fasum Gunung Siki, dalam rangka pembangunan Bendungan Tigadihaji, kegiatan peledakan dilakukan untuk memecah batuan andesit. Lokasi peledakan berjarak kurang dari 118 meter dari konstruksi bendungan, sehingga perlu dilakukan kajian untuk mengantisipasi dampak negatif berupa flyrock lemparan batuan yang dapat merusak struktur bendungan. Analisis difokuskan pada prediksi jarak lemparan terjauh flyrock dan pemberian rekomendasi geometri peledakan yang optimal untuk meminimalkan risiko tersebut. Data yang digunakan meliputi parameter geometri peledakan seperti burden, spacing, diameter lubang, kedalaman lubang ledak, serta jenis dan jumlah bahan peledak. Data ini kemudian dianalisis dengan menggunakan teori dan metode prediksi dari Richard and Moore, Ebrahim Gashemi, Zhou, Jamei, dan Shakeri. Hasil prediksi menunjukkan jarak terjauh flyrock sebesar 10,06 meter, yang masih berada dalam batas aman terhadap jarak bendungan. Rekomendasi teknis untuk peledakan adalah menggunakan diameter lubang 200 mm dengan perhitungan berdasarkan Scale Depth of Burial (SDOB). Metode Richard and Moore dipilih karena memberikan hasil prediksi yang paling mendekati kondisi aktual di lapangan, sehingga dapat dijadikan acuan dalam pengendalian risiko flyrock pada proyek ini. Abstract. At the Fasum Gunung Siki site for the Tigadihaji Dam Project, blasting operations were conducted to fragment andesite rock. The blasting location is approximately less than 118 meters from the dam construction site, making it crucial to study the negative effects of blasting, especially flyrock—the rock fragments thrown during blasting. The study aims to determine the maximum throw distance of flyrock and provide recommendations on optimal blasting geometry to minimize its occurrence. Parameters analyzed include blasting geometry such as burden, spacing, stemming, borehole diameter, borehole depth, and explosive charge. These data were processed using theoretical models developed by Richard and Moore, Ebrahim Gashemi, Zhou, Jamei, and Shakeri to predict flyrock throw distances. Statistical methods including linear regression and standard deviation were applied to assess flyrock parameters and deviations. The farthest flyrock distance recorded was 10.06 meters, which is considered safe relative to the dam’s location. The recommendation is to use a borehole diameter of 200 mm, based on Scale Depth of Burial (SDOB) calculations. Among the prediction methods, Richard and Moore’s equation was preferred as it closely matched actual field conditions. This approach helps ensure the safety of the dam by effectively managing flyrock risks during blasting.
Prediksi Airblast Akibat Kegiatan Peledakan Overburden Batubara Afriyani; Yuliadi; Elfida Moralista
Jurnal Riset Teknik Pertambangan Volume 5, No. 1, Juli 2025, Jurnal Riset Teknik Pertambangan (JRTP)
Publisher : UPT Publikasi Ilmiah Unisba

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29313/jrtp.v5i1.6723

Abstract

Abstract. PT Cipta Kridatama Binuang Mitra Bersama Blok Dua (CK-BMBBD) merupakan perusahaan pertambangan batubara yang melakukan pemberaian dengan metode peledakan. Kegiatan ini berpotensi menimbulkan dampak negatif seperti airblast, ground vibration, dan flying rock. Penelitian ini fokus pada airblast, yaitu gelombang kejut dari ledakan bahan peledak. Airblast dapat membahayakan kesehatan manusia jika melebihi ambang batas, sehingga perlu diteliti. Tujuan penelitian adalah mengetahui nilai airblast, persamaan multiple linear regression, serta metode prediksi paling valid berdasarkan koefisien korelasi. Metodologi yang digunakan adalah metode teoritis (USBM dan McKenzie), multiple linear regression, dan artificial neural network (ANN). Data yang digunakan meliputi airblast dalam desibel, maksimum charge, dan jarak pengukuran. Analisis dilakukan menggunakan statistik untuk mengevaluasi hubungan hasil prediksi dan data aktual. Pengukuran dibandingkan dengan SNI 7570 tahun 2023 yang menetapkan ambang batas 110 dB. Regulasi ini mengatur penggunaan bahan peledak agar sesuai standar. Hasil menunjukkan nilai airblast 45 dB(A) – 77 dB(A), masih aman karena di bawah ambang batas. Prediksi menggunakan ANN menghasilkan nilai R² sebesar 0,9221, menunjukkan hubungan sangat valid antara hasil prediksi dan data aktual. Abstract. PT Cipta Kridatama Binuang Mitra Bersama Blok Dua (CK-BMBBD) is a mining company engaged in coal commodities. The company conducts clearing using the blasting method. Blasting activities may cause negative impacts such as airblast, ground vibration, and flying rock. This research focuses on airblast that occurs due to blasting activities. Airblast is a shock wave produced by the explosion of explosives. Airblast can pose health risks if it exceeds the threshold value, therefore research is necessary. This study aims to determine airblast values, formulate a multiple linear regression equation, and identify the most valid prediction method based on the correlation coefficient. The methodologies used are theoretical methods (USBM and McKenzie), multiple linear regression, and artificial neural network (ANN). The data used include airblast in decibels, maximum charge, and measurement distance. Statistical analysis is applied to evaluate the relationship between predicted and actual airblast data. Airblast measurements were compared to the standard reference, SNI 7570 of 2023, which sets a threshold of 110 dB. This regulation governs the use of explosives to ensure compliance with regulatory standards. The results showed airblast values ranging from 45 dB(A) to 77 dB(A), indicating safety. ANN prediction yielded an R² value of 0.9221, showing very strong validity.
Co-Authors Afriyani Andi Maulana Yusuf Arista, Anggia Aziz Al-Haq, Saepul Baldan Al-Kautsar, Muhammad Br Purba, Neni Marlina Chaerunisa Azzahra Dinola Dwihandoyo Marmer Dzil Ikram, Fadhli E Janrosl, Viola Syukrina Ekastini Elfida Moralista Fahri Al Hakim, Sudrajat Fathkul Qorrib Hafizh Murtadho Hamdan, Fahri Hidayatullah, Krispian Fathan Iqbal Ismail Iswandaru Jati Nugroho Julkarnain, M. Juniardi Akhir Putra Khoerunnisa Prihatini Mardinata, Erwin Melizani Muftiasari Muhammad Afif Zahrandika Muhammad Hilal Fadilah Noor Fauzi Isniarno Noufal Abhinaya Nuryadi, Halid Oktavia, Siska Atmawan Poniman Prabowo, Jerry Dwifajar Prima, Argo Putra Purba, Neni Marlina BR Rodianto, Rodianto Salsabiela, Aghrid Sitorus, David Humala Sofya, Nora Dery Tipa, Handra Yunus Ashari Zaenal Zetli, Sri