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Journal : PROMINE

Pengaruh Struktur Kekar Terhadap Kestabilan Lereng Di PT. Energi Batubara Lestari Kalimantan Selatan Yudho Dwi Galih C; Arrina Khanifa
PROMINE Vol 7 No 1 (2019): PROMINE
Publisher : Jurusan Teknik Pertambangan, Fakultas Teknik, Universitas Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1599.03 KB) | DOI: 10.33019/promine.v7i1.1407

Abstract

PT. Energi Batubara Lestari ( EBL ) merupakan tambang batubara yang menggunakan sistemtambang terbuka, sehingga membutuhkan keamanan lereng untuk terciptanya lingkunganpenambangan yang aman dan kondusif. Penelitian ini bertujuan untuk menganalisis kemantapanlereng, dalam penelitian ini digunakan metode kesetimbangan batas. Keadaan geologi yang terdapatpada PT. EBL terdapat kekar, litologi pasir, pasir lepas, lempung dan batubara, kekar mempengaruhikestabilan lereng karena semakin banyak celah, air yang masuk akan semakin mudahmempengaruhi batuan yang lapuk sehingga mengalami kelongsoran. Kajian kemantapan lereng padasisi highwall sisi A-A’ mendapatkan nilai FK 1.851, sisi highwall sisi B-B’ didapatkan FK 1.676 dan sisihighwall sisi C-C’didapatkan FK 1.54 menandakan bahwa lereng highwall dalam kondisi aman. Danpada sisi lowwall sisi A-A’ didapatkan nilai FK 1.198 , pada sisi lowwall sisi B-B’ didapatkan nilai FK0.94, dan sisi lowwall sisi C-C’ didapatkan nilai FK 1.27, menandakan bahwa pada lereng lowwalldalam konidi kritis. Untuk membuat suatu lereng yang stabil atau aman dilakukan desain geometrilereng pada daerah lowwall dengan merubah tinggi dan overall slope sehingga didapatkan hasil FKantara lain : sisi desain A-A’ lereng lowwall 1.478, sisi desain B-B’ lereng lowwall 1.447 sedangkan sisidesain C-C’ lereng lowwall 1.497.
Analisis Kebutuhan Airflow Budget Di Level Extraction Pada Tambang Bawah Tanah Di Area Deep Mill Level Zone (Dmlz) PT. Freeport Indonesia Timika Papua Yudho Dwi Galih Cahyono; Avellyn Shinthya Sari; Billi Hanok Wambukomo
PROMINE Vol 9 No 1 (2021): PROMINE
Publisher : Jurusan Teknik Pertambangan, Fakultas Teknik, Universitas Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33019/promine.v9i1.2272

Abstract

Freeport Indonesia (PTFI) is a mining company that is an affiliate of Freeport-McMoran Copper & Gold Inc. (FCX) and PT Indonesia Asahan Aluminum (Persero) (Inalum). As of 2019, the Government of Indonesia has taken over 51.23% of shares (41.23% Inalum, 10% Regional Government of Papua). The research methods used in this activity are observational and comparative methods. In analyzing the calculation factors of design budget criteria. The data obtained will be used to compare direct field observation data with monthly report data from the company and equalize it with the air standard for underground mine ventilation based on the Decree of the Minister of Mines and Energy No. 1827 K / 30 / MEM / 2018. Calculation of airflow budget for the equipment used In the calculation and processing of airflow budget data is the R1600 LHD loader, the results of the Utilization Factor for 1 year are obtained by regulation of the Government of PT. Freeport itself uses in accordance with the regulations, namely 0.067 multiplied by 208Kw from the R 1600 LHD tool, obtaining an average 0.302 Maximum 0.482 Minimum 0.033 With a total air supply into the DMLZ mine of 1338 m3 / s, this is very sufficient from the results of the total air demand based on the airflow buget design in accordance where is 1095.6 m3 / s. In underground mining, DMLZ is in accordance with the regulation of the Decree of the Minister of Energy and Mineral Resources of the Republic of Indonesia Number 1827 K / 30 / MEM / 2018
Kajian Produktivitas Alat untuk Mengoptimalkan Hasil Produksi Overburden di PT. Karebet Mas Indonesia Site Kutai Energi Kalimantan Timur Fairus Atika Redanto Putri; Yudho Dwi Galih Cahyono; Serin Rabin
PROMINE Vol 9 No 2 (2021): PROMINE
Publisher : Jurusan Teknik Pertambangan, Fakultas Sains dan Teknik, Universitas Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33019/promine.v9i2.2865

Abstract

Overburden and coal mining must go hand in hand and in line, because high overburden productivity will affect coal production results. This study aims to calculate, analyze productivity and determine recommendations for increasing production. This research uses a combined research method and a mathematical pattern. The company has a productivity target of 220.5 m3/hour, with the actual conditions obtained for digging and loading equipment that has reached the target of 279.9238 BCM/hour, but the transportation equipment has not reached the target of 80.9048 LCM/hour. There are various factors that have not achieved the production target, among others, low work efficiency, quite long transportation and return times during transportation equipment circulation times, as well as mismatched compatibility factors that cause long waiting times for transportation equipment. After optimization with the addition of 1 unit of excavator with the same type, optimization of the transportation equipment cycle time and optimization of the work efficiency of the transportation equipment, an increase in productivity was obtained in each conveyance, so that after optimizing the productivity target of transportation equipment was achieved by 222 ,4045 LCM/Hour.
Co-Authors Adhe Gusti Hotman Agus Budianto Agustinus Ghebree Tola Suryatmodjo Aldy Elriq Syahputra aldy maulana Alfian Maulana Andyel Chaeza Adya Enggiarta Anggraini, Illa Firda Anok, Klotilda Delfiana Aprilia Dwi Astuti Aprilia Dwi Astuti, Aprilia Dwi Ariyanto, Kevin Dave Arrina Khanifa Atawolo, Yuliano Eldianto Aulia, Firman Avellyn Shinthya Sari Bahar, Hendra Billi Hanok Wambukomo Bryan Caesar Mahaputra Beko Cahyadi Kamal Hidayatulloh Da Costa, Jose Ogelivio Agapito Dahniel Mahmud Dandi Gusti Ode Dewa Rizalzi Abdillah Dewi, Melly Shintia Dhymas Wahyu Tri Saputra Dias, Evie Noviany Dinoy, Edward Dony, Anggy Dessyana Dyah Aziz Suwitaningsih Eka Nurohman Hadi Prasetyono Erni Irmawati Erong, Filda Nanda Oktaviani Faath Ghifary Radlia Widodo Fanani, Yazid Fiqhih Hadi Saputra Firdausyanto, Afdol Firmansyah Firmansyah Firmansyah Fitra Alif Sairozi Gabriela Vionny Yama Gabriela Viony Yama Geri Wiranda Romadhan Gia Cintha Olinge Soares Grains Silvester Sapan Heni Siska Wiyanti Imelda Yuni Pratiwi Imelda Yuni Pratiwi Intan Lestari Iqbal Arif Frimansyah Jackie Angkie Johanis Aristo Rawul Kemong, Beny Jeckson Klotilda Delfiana Anok Kurniawan Abdullah Kusdarini, Esthi Lakon Utamakno Lakon Utamakno Lakon Utamakno Lakon Utamakno Leba, Elton Pe M. A. Tamanak Mabuat, Imelda Srilestari Makmara, Meilinda Marasabesy, Zukipli Maria Frumensia Gastramat Melkianus .A Tamanak Melly Ayu Saputri Moch Fahni Mahendra Muhammad Fathurrosyidi Nahklah Amiroh Risyda Chaq Nani, Dionesius Noche Lorensius Sairdekut Octaviana, Iva Nurul Patrick Andreas Guna Pradana, Denis Rocky Putri, Fairus Atika Redanto R J Kakisina R. H. K. Putri Rabin, Serin Ramadhani, Eka Rizky Ratih Hardini Kusuma Putri Regita Cahyani Samal Rinaldhie Guntur Dharmansyah Rumbiak, Viona Saleky, Dewy Belavista Sani, Yance Santosa, Fadel Haritsa Putra Seftian Mahendra Serin Rabin Sigit Allobunga Silva, Avelar I. N. Dc. E. Supriyanto, Adi Sutiray, Joseph Alexon Dwine Sylvesiana Ayunida Sasti Tampaty, Yohanes Gilbert Theo Berhitu Theo Berhitu Titirloloby, Aloysius Wahono, Jeremy Gievani Wahyu Saputra Wakim, Adi Paulus Wendy Muhammad Ibnu Faridh Zuhri, Syarifudin Zuhrotus Sa'adah