Evaluation of blasting activities to achieve rock fragmentation targets ≤ 50 cm at PT. Lotus SG Lestari.

Syiffa Lutfi Fitri, Supriyadi Supriyadi, M Bambang Soegeng

Abstract


The study aims to optimize blasting geometry in order to obtain optimal fragmentation where the preccentage of boulders is less than 15%. The study method is carried out by providing recommendations for blasting geometry based on the theory of R.L. Ash and C.J.Konya and analysis were carried out based on the Kuz-Ram equation and software split desktop in determining rock fragmentation in order to obtain an optimal blasting geometry plan. As a result, the blasting geometry of R.L. Ash has been more effective and efficient to apply. This indicated by the boulder of fragmentation is produced 14%.


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Publisher Mining Engineering Department, Faculty Science and Technology, Syarif Hidayatullah Jakarta State Islamic University,
 
Jl. Ir. H. Juanda No. 95, Ciputat, Jakarta 15412, Indonesia, Telp. 021-7492855, Fax. 021-7493351, website: http://journal.uinjkt.ac.id/index.php/jipl, e-mail: jipl.journal@uinjkt.ac.id