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All Journal Jurnal Geocelebes PROMINE KURVATEK International Journal of Hydrological and Environmental for Sustainability Prosiding Seminar Nasional Rekayasa Teknologi Industri dan Informasi ReTII Globe: Publikasi Ilmu Teknik, Teknologi Kebumian, Ilmu Perkapalan JURNAL TEKNOLOGI MINERAL FT UNMUL
Novandri Kusuma Wardana
Institut Teknologi Nasional Yogyakarta
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 Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Physics Social Sciences Transportation

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Analisis Produktivitas Alat Gali Muat dan Alat Angkut Pada Pengupasan Lapisan Tanah Penutup (Overburden) Di PT. Cahaya Riau Mandiri Kabupaten Lahat Provinsi Sumatera Selatan Lase, Agus Sudarman; Purnoma, Hendro; Wardana, Novandri Kusuma
JURNAL TEKNOLOGI MINERAL FT UNMUL Vol 12, No 1 (2024): Jurnal Teknologi Mineral FT UNMUL Juni 2024
Publisher : Universitas Mulawarman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30872/jtm.v12i1.14338

Abstract

PT. Cahaya Riau Mandiri merupakan suatu perusahaan yang bergerak dibidang pertambangan batubara yang beroperasi di Kabupaten Lahat Provinsi Sumatera Selatan dengan sistem tambang terbuka. PT. Cahaya Riau Mandiri memiliki target produksi sebesar 70. 000 ton/bulan dalam satu shift. Tujuan penelitian ini untuk mengetahui produksi aktual alat gali muat dan alat angkut, faktor keserasian pada penambagan batubara, mengetahui hambatan-hambatan waktu kerja efektif, mengatasi hambatan kerja yang dapat dihindari sehingga loss time dapat berkurang dan produksi yang dihasilkan dapat tercapai sesuai target perusahaan. Metode yang digunakan dalam penelitian ini adalah kuantitatif dan tahapan dalam penyusunan penulisan ini dimulai dari studi literatur, observasi lapangan, pengambilan data dilapangan, pengolahan data, analisis data, pembahasan serta kesimpulan dan saran. Berdasarkan penelitian dan perhitungan yang telah dilakukan didapatkan produksi aktual alat gali muat excavator Liugong CLG952E sebesar 46. 522, 30 ton/bulan dan alat angkut dump truck Iveco 682 44. 525, 25 ton/bulan dengan faktor keserasian sebesar 0, 56. Strategi yang dapat dilakukan dalam meningkatkan produksi adalah memperbaiki hambatan kerja, faktor pengisian, keserasian alat dan waktu edar dengan menggunakan dasar acuan kerja dari perusahaan. Setelah melakukan perbaikan- perbaikan hambatan kerja alat gali muat excavator Liugong CLG952E dan alat angkut dump truck Iveco 682, produksi alat gali muat excavator Liugong CLG952E meningkat dari 46. 522, 30 ton/bulan menjadi 70. 068,54 ton/bulan dan alat angkut dump truck Iveco 682 meningkat dari 44. 525, 25 ton/bulan menjadi 70. 048, 21 ton/bulan.Kata Kunci: Hambatan, Efisiensi, Keserasian dan Produksi
Analysis of Ground Vibration Levels Due to the Blasting Process at PT. Bumi Suksesindo Nofry Hence Tarumasely; Novandri Kusuma Wardana; Rizqi Prastowo
JURNAL GEOCELEBES Vol. 8 No. 1: April 2024
Publisher : Departemen Geofisika, FMIPA - Universitas Hasanuddin, Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20956/geocelebes.v8i1.32853

Abstract

Ground vibration is one of the effects of the blasting process; when the ground vibration reaches the highest level, it will disturb comfort and even cause damage to the surrounding building structure. This research aims to determine the magnitude of ground vibrations in Pit A and Pit C, as well as determine the relationship between Peak Particle Velocity (PPV) and scaled Distance, and determine the maximum explosive charge weight per delay based on the SNI 7571: 2010 reference. Actual ground vibration measurement data during research based on PPV theory and the actual PPV power regression relationship with scaled distance was used to obtain a ground vibration prediction formula to be a reference for determining the amount of explosive filling per delay. The ground vibration produced in the blasting process is hoped not to exceed the safe threshold. Prediction of the ground vibration formula at 100 m to 1500 m according to the US Bureau of Mines where the Mean Squared Error (MSE) value is 0.54, the MSE value from the Langefors-Kihlstrom equation is 1.85 while the MSE value from the Ambersays-Hendorn equation is 0.31 with the slightest deviation is very good to use as a reference for predicting ground vibrations with the predicted PPV formula. Hence, the maximum explosive charge with a PPV limit of 2 mm/s is 2.452 kg, a PPV limit of 3 mm/s is 11.332 kg, and a PPV limit of 5 mm/s is 23.040 kg. The factors that influence ground vibration are the Distance from the blasting location to the measurement location and the maximum number of explosives per delay, so the results taken from this research are that blasting in Pit A and Pit C is still categorized as safe for infrastructure and community housing.
Co-Authors A.A Inung Arie Adnyano, A.A Inung Arie Agustian, Wewen Agustinus Isjudarto Anggi Hermawan Bayurohman Pangacella Putra Bram Lanjaya Bungalan, Elsy Thiansy Demanson Ornansah Sinaga Dian Eka Aryanti Erry Sumarjono Fadilah Gilang Prasetyo Faisol Mukarom Hery Widijanto Jannah, Salsabila Raudlotul Junior, Prince Robert Lase, Agus Sudarman Mahardika, Yudi Mataheru, Juan Aknes Muhammad Bahtiyar Rosyadi Nofry Hence Tarumasely Pangestu, Wahyu Yudha Partama Misdiyanta Purnoma, Hendro Putri Nadya, Adinda R. Andy Erwin Wijaya Rizqi Prastowo Rochsyid Anggara Supandi Trynovianti Putri Malik Veno Sholitha Yudi Yudi Dwi Kurniawan