• Title/Summary/Keyword: 발파 설계

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Application of Electronic Deck Charge Blasting Method to a Vertical Shaft Excavation (수직구 굴착시 전자뇌관을 이용한 Deck-Charge 발파 시공사례)

  • Kim, Jae-Hong;Kim, Hee-Do;Lee, Jun-Won;Kim, Gab-Soo;Son, Young-Bok;Kim, Jae-Hoon
    • Explosives and Blasting
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    • v.31 no.1
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    • pp.64-75
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    • 2013

  • This case study deals with an excavation blasting carried out at "Sooseo-Pyeongtek ${\bigcirc}$-${\bigcirc}$ section construction site" in the vicinity of residential area. Originally, the sequential blasting (multi-stage blasting) using electric detonators was planed in this area. However, there was a concern that the sequential blasting method could increase the construction cost by delaying the construction period due to possible complaints from local residents. As an alternative, electronic deck blasting technique was taken in order to meet the ground vibration regulation (0.2cm/s, in apartment area) and to keep the construction schedule. The performance of the electronic deck charge blasting was two times better than the sequential blasting with electric detonators and the level of ground vibration was also within the regulatory value (0.2cm/s). In particular, it was shown that the use of electronic detonater eDevII, which was developed for tunnel, could provide more convenient and electrically safer working condition.

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