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A Study on the Derivation of Powder factor for Tunnel Blast Design Based on Blastability Evaluation  

Lim Kyung-Ho (도담 E&C)
Kim Joon-Youp (도담 E&C)
Lim Dae-Kyu (대영발파엔지니어링)
Shin Young-Chul (대영발파엔지니어링)
Publication Information
Explosives and Blasting / v.23, no.3, 2005 , pp. 75-82 More about this Journal
Abstract
Many blasting engineers develope their own approach to define how to blast different rockmass properties. The problem is that most of these approaches haven't been formalized in any systematic manner and they depend mainly on casual observation of local conditions by an experienced blaster. In this paper blastability index developed by Lilly is adopted to induce powder factor for blast design considering local conditions. With this approach blastability scheme can be considered joint properties as well as rockmass represented local conditions. This approach is also expected to supplement the shortcomings of existing blast design approaches.
Keywords
blastability index; powder factor; fracture domain; tunnel blast design;
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  • Reference
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