Harukadol, Tunaiki (2021) Evaluasi Rancangan Geometri Peledakan Untuk Mengoptimalisasikan Hasil Peledakan Pada Penambangan Batu Andesit Di PT. Bintang Sumatera Pacific Pangkalan Koto Baru Kabupaten 50 Kota Provinsi Sumatera Barat. Skripsi thesis, Universitas Negeri Padang.
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Abstract
Blasting activities carried out by PT. Bintang Sumatera Pacific produces quite large> 60 cm (> 15%), while the bucket capacity of Hitachi Zaxis 200 digger is 1.09 m3 in size. Blasting geometry is one of the factors causing the large amount of fragmentation produced. So the blasting fragmentation analysis was carried out using the kuz-ram equation and the blasting geometry improvement was done using R.L Ash and C.J. Konya. As a result of the research the following conclusions were drawn. First, rock fragmentation from the proposed blasting geometry, the average fargmentation of the rocks that passes is <60 cm in size with split desktop software, which is 100% of 1 blasting. Second, based on calculations using the RL Ash formula for the proposed blasting geometry I, II, III, IV and calculations using the CJ Konya formula for the proposed blasting geometry V. Then the blasting geometry proposal I is selected using the RL Ash formula with a space value (S) of 2 meters, burden (B) 2 meters, depth (H) 5.5 meters, height (L) 5 meters, Stemming (T) 2 meters, Subdrilling (J) 0.5 meters, average filling column 3.5 meters. Third, the production yield obtained from one trial of proposed blasting is 5977 tonnes.
| Item Type: | Thesis (Skripsi) |
|---|---|
| Subjects: | T Technology > TN Mining engineering. Metallurgy |
| Divisions: | Fakultas Teknik > Teknik Pertambangan - S1 |
| Depositing User: | Mrs. Dina Aulia Sari |
| Date Deposited: | 03 May 2021 02:50 |
| Last Modified: | 03 May 2021 02:50 |
| URI: | http://repository.unp.ac.id/id/eprint/31354 |
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