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A Study on the Effectiveness of a Guide Hole on Crack Growth Control in Blasting  

Lee, Hee-Gwang (전북대학교 자원.에너지공학과)
Kim, Seung-Kon (전북대학교 자원.에너지공학과)
Cho, Sang-Ho (전북대학교 자원.에너지공학과)
Publication Information
Tunnel and Underground Space / v.20, no.2, 2010 , pp. 125-130 More about this Journal
Abstract
Model blast experiments of mortar blocks were performed to investigate the effect of the guide hole on crack growth. The mortar block specimens have a blast charge hole and 8 guide holes. Two of circular guide hole, notched guide hole, diamond shaped guide hole and diamond shaped guide holder are installed around 110 mm, 165 mm and 220 mm apart from the charge hole for each specimen. From the blast experiments, it was revealed that all the guide hole used in this study were effective for controlling the crack growth at the fracture control.
Keywords
Model blast experiments; Guide hole; Dynamic fracture process analysis code; Effectiveness of the fracture control;
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Times Cited By KSCI : 2  (Citation Analysis)
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