Rock mass-based blasting geometry evaluation using Kuz-Ram and split desktop for limestone fragmentation

Jurnal Riset Tindakan Indonesia September 17, 2026 Volume 11, Number 2 4 authors

Abstract

This study aims evaluated limestone blasting geometry under massive and blocky rock-mass conditions and developed geometry adjustments to improve fragmentation control. Thirteen production blasts conducted at PT Semen Padang during April–May 2025 were analyzed quantitatively. Fragmentation was predicted using Kuz-Ram and verified against field fragmentation measured using Split Desktop 2.0.1, with X50 and boulders ≥50 cm as evaluation criteria. Actual boulder percentages for massive rock were 67.47% and 69.00% using Kuz-Ram and Split Desktop, respectively, whereas blocky rock yielded 44.89% and 56.00%. Kuz-Ram evaluation of the proposed geometry reduced X50 from 78.05 to 31.29 cm in massive rock and from 46.41 to 26.56 cm in blocky rock. These findings indicate that rock-mass-specific geometry adjustments can improve predicted fragmentation; however, field validation is required before operational implementation.

Authors

  1. Prisdwiki Aldhatan

    Universitas Negeri Padang

  2. Jukepsa Andas

    Universitas Negeri Padang

  3. Rudy Anarta

    Universitas Negeri Padang

  4. Refky Adi Nata

    Universitas Negeri Padang

Keywords

Blasting geometryLimestone fragmentationKuz-ramSplit desktopRock mass characteristics

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