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A Case Study of Combining NDC Blasting Method and Wide Space Blasting Method to Increase Blast Efficiency  

No, Sang-Lim (GS건설(주) 기술본부)
Noh, Seung-Hwan (GS건설(주) 기술본부)
Lee, Sang-Pil (GS건설(주) 기술본부)
Lee, Hoon-Yeon (GS건설(주) 기술본부)
Lee, Tai-Ro ((주)성보지오텍)
Publication Information
Tunnel and Underground Space / v.16, no.5, 2006 , pp. 387-393 More about this Journal
Abstract
This paper introduces the combination of two blasting methods applied to reduce blast-vibration and increase blast efficiency. NDC (New Deck Charge) blasting method using air deck effect with separation tube made of paper was effective to reduce blast-vibration, while blast efficiency was decreased a little in the bottom of a blasthole. Wide Space blasting method has an advantage to control the fragmentation and to increase blast efficiency over conventional blasting methods. In this study new blasting method combining NDC blasting method and Wide Space blasting method was applied to the field, it was confirmed to reduce blast-vibration and increase blast efficiency. It is expected to make useful blasting method to cover the public complaints and to shorten construction time by accumulating blasting data using new method with various conditions.
Keywords
NDC blasting; Wide space blasting; Blast-vibration; Blast efficiency;
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  • Reference
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