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A Case Study on the Construction of Concrete Lining in Parallel with Blasting in a Long Tunnel  

Ryu Joung-Hoon (코오롱건설 기술연구소)
An Hyung-Jun (코오롱건설 기술연구소)
You Jin-O (코오롱건설 기술연구소)
Choi Byung-Hee (한국지질자원연구원 지반안전연구부)
Publication Information
Explosives and Blasting / v.24, no.1, 2006 , pp. 39-48 More about this Journal
Abstract
The various alternatives to reduce the construction period and cost in the wide and long tunnel have been attempted recently. However, the concrete lining forming process after finishing tunnel excavation may delay construction period considering the specific conditions of the wide and long tunnel. The concrete lining is indispensible for the road tunnel. For this reason, the blasting-lining synchronizing study had been carried out to reduce construction period in the Gyea-Ryong Tunnel. Lining models were installed at four different distance conditions the floor of the tunnel. After model installation, hundreds of blasting vibration measurements and concrete material tests were performed to calculate the safe distance between blasting point and concrete lining form. The study also introduces a method which can obtain the better ability of construction by improving working environment with the ventilation and the relocation of tunnel equipments in the working places.
Keywords
allowable peak vibration level; lining model; safe distance; parallel construction;
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  • Reference
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