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http://dx.doi.org/10.22704/ksee.2021.39.3.024

A Case Study of GTX A Tunnel Station Blasting with Electronic Detonator  

Hwang, Nam-Sun ((주)한화/글로벌/전자뇌관 TF)
Kim, Kyung-Hyun ((주)한화/글로벌/전자뇌관 TF)
Kim, Jeoung-Hwan ((주)한화/글로벌/전자뇌관 TF)
Seong, Yoo-Hyeon ((주)한화/글로벌/전자뇌관 TF)
Lee, Chang-Won (삼정E&C 기술사사무소)
Publication Information
Explosives and Blasting / v.39, no.3, 2021 , pp. 24-34 More about this Journal
Abstract
Electronic detonators are widely used in various construction sites due to accurate delay time. Including the cases with exceeded noise and vibration from site using electric/non-electric detonator, electronic detonators are used to improve blast fragmentation or to reduce the cost of secondary partial blasting. Furthermore, the number of cases using electronic detonators are increased for reduction of the cost and construction period by maximizing operations efficiency. This case study is about applying electronic detonators on large section station, tunnel construction site which is the part of urban area GTX A project. Although it was initially planned to utilize non-electric detonators, damage was inflicted on safety-thing. We have considered blasting method using electronic detonators as solution of this problem. By applying electronic detonators, we not only satisfied environmental regulations but also prevented nearby safety-thing from getting damaged. In addition, we were able to shorten the construction period than the initial plan by conducting single simultaneous blasting on large section station, in order to ensure safe and efficient construction.
Keywords
Electronic detonator; Construction site; Noise; Vibration; Secondary partial blasting; Fragmentation; Environmental regulation;
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