Optimization of Limestone Production Based on Geological Structure Conditions for Blasting Geometry Design
The research location is in Sumber Arum, a village in Kerek District, Tuban Regency, East Java. The object of this study includes the state of the geological structure around the mining site and its effect on blasting activities. The purpose of this study is to obtain a blasting geometry design that is suitable for the geological structure conditions at the mining site so that the resulting blasting fragmentation has a uniform size to increase the amount of company production. The method used in this study is to combine data from measurements and observations in the field with blasting design theory. From these data, further analysis and trial blasting activities are conducted and the results obtained from the actual blasting plan with the proposed blasting plan are compared. The calculation results of the blasting geometry design obtained the proposed blasting geometry values, including the burden of 2.5 meters, the spacing of 3 meters, the stemming of 1.75 meters, the subdrilling of 0.5 meters, the shot hole depth of 6.5 meters, and the direction of the explosion of 6.5 meters that is located at point N37ÂºE. Based on the application, the blasting fragmentation with a size of â‰¤ 80 cm is evenly distributed, with a percentage of 99.44% of the total fragmentation resulting from blasting. The amount of limestone produced in one year is 20.138.946 tons.
Keywords: blasting geometry, production, limestone, geological structure
Adebola, J.M., Ajayi, O.D., dan Elijah, P., 2016, Rock Fragmentation Prediction Using Kuz-Ram Model, journal of environment and earth science, Vol. 6, No. 5, hal 110-115
Anonim, 2015, Laporan dan Arsip Perusahaan PT. United Tractors Semen Gresik
Ash, R.L., 1963, The Mechanics of Rock Breakage, Part I, II, III, and IV. Pit and Quarry, v.56, No. 2, August 1963, pp. 98-112; No. 3, September 1963, pp. 118-123; No. 4, October 1963, pp. 126-131; No. 5, November 1963, oo. 109-111, 114-118
Cunningham, C.V.B., 1983, The Kuz-Ram Model for Prediction of Fragmentation From Blasting. Proceedings of First International Symposium on Rock Fragmentation by Blasting. Lulea, 439-454.
Ghadafi, M.A., Komar, S., dan Sudarmono, D., 2014, Kajian Teknis Geometri Peledakan Berdasarkan Analisis Blastability dan Digging Rate Alat Gali Muat, Jurnal Ilmu Teknik, Vol. 2, No. 3, Oktober 2014
Herman, Widodo, S., Nurwaskito, A., 2015, Analisis Pengaruh Kedalaman Lubang Ledak, Burden dan Spacing Terhadap Perolehan Fragmentasi Batugamping, , Jurnal Geomine, Vol. 03, No. 1, Desember 2015, hal. 184-188
Koesnaryo S., 2001, Rancangan Peledakan Batuan, Jurusan Teknik Pertambangan, Fakultas Teknologi Mineral UPN â€œVeteranâ€ Yogyakarta.
Safarudin, Purwanto, dan Djamaluddin, 2016, Analisis Pengaruh Geometri Peledakan Terhadap Fragmentasi dan Digging Time Material Blasting, Jurnal JPE (Jurnal Penelitian Enjiniring), Vol. 20, No. 2, November 2016, hal. 54-62
Susanti, R., dan Cahyadi, T.A., 2011, Kajian Teknis Operasi Peledakan untuk Meningkatkan Nilai Perolehan Hasil Peledakan di Tambang Batubara Kab. Kutai Kartanegara Provinsi Kalimantan Timur. Proceding Seminar Nasional Kebumian FTM 2011 UPN, pp. 2.69- 2.76 ISSN 978-602-19765-0-0
Waloeyo, D.P., dan Assegaff, F.R., 2015, Aplikasi Struktur Geologi Untuk Optimalisasi Blasted Materials di Kuari Batugamping PT. UTSG. Laporan Akhir Penelitian Mandiri, Institut Teknologi Adhitama Surabaya, 42 hal. Diakses di https://www.scribd.com/document369633805/
Authors who publish articles inÂ Jurnal Geologi dan Sumberdaya Mineral (JGSM.Geologi) agree to the following terms:
- Authors retain copyright of the article and grant the journal right of first publication with the work simultaneously licensed under aÂ CC-BY-NC or The Creative Commons Attributionâ€“ShareAlike License.
- Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgment of its initial publication in this journal.
- Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access)