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Analysis of In-situ Rock Conditions for Fragmentation Prediction in Bench Blasting  

최용근 ((주)지오제니컨설턴트)
이정인 (서울대학교)
이정상 ((주)지오제니컨설턴트)
김장순 ((주)지오제니컨설턴트)
Publication Information
Tunnel and Underground Space / v.14, no.5, 2004 , pp. 353-362 More about this Journal
Abstract
Prediction of fragmentation in bench blasting is one of the most important factors to establish the production plan. It is widely accepted that fragmentation could be accurately predicted using the Kuz-Ram model in bench blasting. Nevertheless, the model has an ambiguous or subjective aspect in evaluating the model parameters such as joint condition, rock strength, density, burden, explosive strength and spacing. This study proposes a new method to evaluate the parameters of Kuz-Ram model, and the predicted mean fragment sizes using the proposed method are examined by comparing the measured sizes in the field. The results show that the predictions using Kuz-Ram model with the proposed method coincide with field measurements, but Kuz-Ram model does not reflect the in-situ rock condition and hence needs to be improved.
Keywords
Fragmentation; Bench blasting; Kuz-Ram Model;
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