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http://dx.doi.org/10.7474/TUS.2011.21.3.235

Numerical Study on the Effectiveness of Guide Holes on the Fracture Plane Control in Smooth Blasting  

Kim, Hyon-Soo (전북대학교 자원.에너지공학과)
Kim, Seung-Kon (전북대학교 자원.에너지공학과)
Song, Young-Su (전북대학교 자원.에너지공학과)
Kim, Kwang-Yeom (한국건설기술원)
Cho, Sang-Ho (전북대학교 자원.에너지공학과)
Publication Information
Tunnel and Underground Space / v.21, no.3, 2011 , pp. 235-243 More about this Journal
Abstract
In this study, a control blast method, which utilizes crack guide holes, is suggested to achieve smooth fracture plane and minimize blast damage zone (BDZ) in smooth blasting. In order to verify the effectiveness of crack guide holes on the fracture plane control in blasting, fracture process analyses which consider regular smooth blasting and guide hole smooth blasting had been conducted and the fracture planes resulting from the analyses had been compared. The analyses models considered the ignition of the blast holes using detonation cords and each guide hole placed between blast holes. From the results, the smooth blasting utilizing guide holes showed lower fracture plane roughness than regular smooth blasting method in the hole spacing range between 20 to 40cm.
Keywords
Smooth blasting; Crack guide hole; Fracture plane control; Blast damage zone (BDZ);
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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