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ANALISIS PENGARUH GEOMETRI PELEDAKAN TERHADAP UKURAN FRAGMENTASI BATUAN PADA KEGIATAN PELEDAKAN BATUGAMPING DI PT SEMEN PADANG

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Limestone blasting activities at PT Semen Padang generally produced fragmentation that tended to fall within the fine to medium size category. The dominance of excessively fine fragments may increase dust generation and fine material loss, while also indicating inefficient utilization of blasting energy. This condition was influenced by the actual blasting geometry and rock mass conditions in the field, such as natural fractures, weak planes, and lithological differences at each blasting location. This study was conducted by measuring the actual blasting geometry in the field and analyzing the fragmentation distribution using Split Desktop and the Kuz-Ram method to compare the actual fragmentation results with the theoretical approach.The results showed that the existing blasting geometry consisted of 3 × 3 geometry at front B, 3 × 4 geometry at front C, and 4 × 5 geometry at PLB. The actual fragmentation analysis using Split Desktop showed that fragments sized ≤40 cm in the 3 × 3, 3 × 4, and 4 × 5 geometries were 62.85%, 61.29%, and 60.90%, respectively, while fragments larger than 80 cm were 0.00%, 1.21%, and 4.15%, respectively. Meanwhile, the Kuz-Ram analysis indicated that the 4 × 5 geometry produced theoretically coarser fragmentation than the 3 × 3 and 3 × 4 geometries. The variation in fragmentation results was influenced by differences in blasting geometry and rock mass conditions, where front B and front C were dominated by limestone, whereas PLB had a different lithology in the form of weathered basalt. The recommended blasting operation focuses on optimizing the powder column length and delay time, as well as improving supervision of drilling accuracy, blasting geometry, explosive charging, and stemming installation to maintain fragmentation quality in accordance with production requirements.

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Detail Information

Series Title

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Call Number

T2009972026

Publisher

Indralaya : Prodi Teknik Pertambangan, Jurusan Pertambangan dan Geologi Fakultas Teknik Universitas Sriwijaya., 2026

Collation

xvii, 96 hlm.; ilus.; tab.; 29 cm.

Language

Indonesia

ISBN/ISSN

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Classification

622.207

Content Type

Text

Media Type

-

Carrier Type

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Edition

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Subject(s)

Jurusan Pertambangan dan Geologi
Prodi Teknik Pertambangan
Peledakan dan Penggalian Tambang

Specific Detail Info

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Statement of Responsibility

MI

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