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Investigation of Excavation Disturbed Zone Around a Tunnel by Blasting  

Kwon, Sang-Ki (한국원자력연구원)
Cho, Won-Jin (한국원자력연구원)
Publication Information
Explosives and Blasting / v.25, no.1, 2007 , pp. 15-29 More about this Journal
Abstract
In situ and laboratory tests were carried out for investigating the Excavation Disturbed Zone(EDZ) generated from blasting at the KAERI Underground Research Tunnel(KURT), which is for the researches related to High-level radioactive waste disposal program. It was found that the EDZ was generated more than In from the laboratory rock tests and in situ experiments. RQD of the rock mass within $0{\sim}2(m)$, where the blasting impact was significant, was 17% lower than in the deeper zones without a serious blasting impact. It was also estimated that the deformability of rock mass was reduced about 40% after the blasting.
Keywords
EDZ; KURT; HLW disposal; Goodman jack test; RQD;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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