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All Journal Journal Transformation of Mandalika Jurnal Riset Teknik Pertambangan INTAN Jurnal Penelitian Tambang Prosiding Seminar Nasional Rekayasa Teknologi Industri dan Informasi ReTII Globe: Publikasi Ilmu Teknik, Teknologi Kebumian, Ilmu Perkapalan JURNAL TEKNOLOGI MINERAL FT UNMUL Konstruksi: Publikasi Ilmu Teknik, Perencanaan Tata Ruang dan Teknik Sipil Manufaktur: Publikasi Sub Rumpun Ilmu Keteknikan Industri Venus: Jurnal Publikasi Rumpun Ilmu Teknik
Tommy Trides
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Aerospace Engineering Agriculture, Biological Sciences & Forestry Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mechanical Engineering Medicine & Pharmacology Physics Transportation

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Analisis Jarak Lemparan Flyrock Terhadap Radius Aman Alat 150 Meter Di Pit 40 Sentuk PT Multi Harapan Utama, Kecamatan Loa Kulu, Kabupaten Kutai Kartanegara, Kalimantan Timur: Analisis Jarak Lemparan Flyrock Desi Permatasari; Tommy Trides; Shalaho Dina Devy; Revia Oktaviani
Retii 2024: Prosiding Seminar Nasional ReTII ke-19 (Edisi Penelitian)
Publisher : Institut Teknologi Nasional Yogyakarta

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Abstract

Flyrock adalah fragmentasi batuan yang terlempar ke segala arah akibat dari kegiatan peledakan. Ukuran flyrock yang cukup besar dan melewati batas aman yang ditentukan akan menimbulkan kerusakan bagi alat, bangunan sekitar, maupun cidera pada manusia. Oleh karena itu, penelitian ini dilakukan untuk mengetahui jarak flyrock maksimum, parameter yang paling berpengaruh serta evaluasi dari parameter terbesar penyebab flyrock. Untuk memprediksi lemparan flyrock teoritis menggunakan teori Richard & Moore dan Ebrahim Ghasemi. Hasil penelitian didapatkan jarak flyrock maksimum berdasarkan perhitungan aktual yaitu 119,42 meter, berdasarkan perhitungan teoritis menurut Richard & Moore mekanisme face burst yaitu 241,42 meter, mekanisme cratering yaitu 105,51 meter dan teori Ebrahim Ghasemi yaitu 83,03 meter. Teori Ebrahim Ghasemi memiliki keakuratan paling tinggi di antara metode lainnya dengan nilai RMSE sebesar 23,58 meter dan MAPE sebesar 36,53%. Faktor terbesar penyebab jauhnya lemparan flyrock yaitu powder factor, sehingga dilakukan analisis untuk mendapatkan jarak lemparan flyrock maksimum 75 meter agar radius aman alat 150 meter, maka penggunaan powder factor maksimum yang digunakan yaitu 0,24 kg/m3.
Analisis Kemampugaruan Batuan Berdasarkan Metode Seismic Pada Penambangan Batupasir Provinsi Kalimantan Timur : Analisis Kemampugaruan Batuan Bayu Indra Dermawan; Agus Winarno; Shalaho Dina Devy; Tommy Trides; Revia Oktaviani
Retii 2024: Prosiding Seminar Nasional ReTII ke-19 (Edisi Penelitian)
Publisher : Institut Teknologi Nasional Yogyakarta

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Abstract

In mining activities, high risk is one of the main aspects that must be anticipated, especially regarding the geomechanical complexity of the rocks being excavated. Selecting the right excavation method can greatly impact operational efficiency and safety. In this context, direct digging, ripping, and blasting are the three main options, tailored to the characteristics of the rock.To determine the most suitable method, a rock rippability study is essential. This study can be conducted using direct or indirect methods. In this research, the seismic method was used to assess rock strength based on the seismic wave velocity, which was recorded at 1437.80 m/s. This value serves as a reference for selecting appropriate equipment for ripping activities.Given these characteristics, the recommended equipment for ripping is the D8T/D8R dozer from Caterpillar or the D275A/D275AX dozer from Komatsu. This equipment choice is based on its capability to handle rocks with strength levels reflected by the measured seismic wave velocity.
Studi Pengaruh Geometri Peledakan terhadap Biaya Pemboran dan Biaya Peledakan pada PT Unggul Dinamika Utama Kabupaten Kutai Timur Provinsi Kalimantan Timur Berliani Wahyu Ningrum; Tommy Trides; Rety Winonazada; Revia Oktaviani; Lucia Litha Respati
Venus: Jurnal Publikasi Rumpun Ilmu Teknik  Vol. 3 No. 5 (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.v3i5.1158

Abstract

This study aims to analyze the effect of blasting geometry on drilling and blasting costs in mining operations at PT Unggul Dinamika Utama, Kutai Timur Regency, East Kalimantan Province. The research focuses on comparing two operational areas, namely PIT Tempudo 6 and PIT East, which apply different blasting geometries: a burden of 7 m and spacing of 8 m at PIT Tempudo 6, and a burden of 8 m and spacing of 9 m at PIT East. The research method involved collecting primary data from actual field drilling and blasting activities, as well as secondary data from the company. The parameters analyzed included blasting geometry, explosive consumption, and operational costs of drilling and blasting. The results show that the total drilling cost at PIT Tempudo 6 was Rp. 215,689,696, while at PIT East it was Rp. 162,177,899. The total blasting cost at PIT Tempudo 6 reached Rp. 3,023,066,977.60, while at PIT East it was Rp. 1,780,839,602.80. Thus, the total operational cost of blasting activities at PIT Tempudo 6 amounted to Rp. 3,238,756,673.60, and at PIT East amounted to Rp. 1,943,017,501.80. It can be concluded that differences in blasting geometry significantly affect operational cost efficiency. Larger burden and spacing values lead to more efficient costs by reducing the number of drill holes and explosive consumption per blasted rock volume.
Co-Authors Agus Winarno Al Mulyadi Albertus J Pontus Albertus Juvensius Albertus Juvensius Pontus Albertus Pontus Aldicho Alfiandy Suhendik Amarullah Amarullah Andreas Marojahan Gurning Ardhan Ismail Arya Mu’min Wally Bayu Indra Dermawan Benny Christian BB Berliani Wahyu Ningrum Bunga Bunga Desi Permatasari Eghi Eghi Eka Ely Febrianty Evon Seplika Kadang Fadli Fadli Farah Dinna Febryantho Pasiakan Fery Ferdiansyah Gideon Samari Suno Harjuni Harjuni Hasan Henny Magdalena Ibnu Syafi’i Rhamadany Juan, Juan Kasbillah Koeshadi Sasmito Lucia Litha Respati Marlinus Matius Lollong Muhammad Ashar Alias Suara Muhammad Hafidz MUHAMMAD ILHAM Muhammad Rahul Shidiq Muhammad Rayhan Fhadillah Musmulyanas Mus Nirwana Putri Nurhidayatullah Am Ondo Immanuel Samosir Orfinada Sultan Danilof Rafael Bonardy Gultom Renaldy Kyfen Kapoyos Rety Winonazada Revia Oktaviani Revia Oktaviani Roberto Firson Pappang Ruslan Patur Sakdillah S Sakdillah Sakdillah Setiawan Tandi Shalaho Dina Devi Shalaho Dina Devy Siti Asmasari Sri Wahyuni Tommy Aria Pradana Widya Indriani windhu Nugroho Yoga Achmad Rynaldy