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http://dx.doi.org/10.14481/jkges.2015.16.9.23

Analysis on the Characteristics of Rock Blasting-induced Vibration Based on the Analysis of Test Blasting Measurement Data  

Son, Moorak (Department of Civil Engineering, Daegu University)
Ryu, Jaeha (Expressway Design Evaluation Division, Korea Expressway Corporation)
Ahn, Sungsoo (Expressway Design Evaluation Division, Korea Expressway Corporation)
Hwang, Youngcheol (Department of Civil Engineering, Sanji University)
Park, Duhee (Department of Civil and Environmental Engineering, Hanyang University)
Moon, Duhyeong (Yongma Engineering)
Publication Information
Journal of the Korean GEO-environmental Society / v.16, no.9, 2015 , pp. 23-32 More about this Journal
Abstract
This study examined blast testing measurement data which had been obtained from 97 field sites in Korea to investigate the comprehensive characteristics of rock blasting-induced vibration focusing on the effect of excavation types (tunnel, bench) and rock types. The measurement data was from the testing sites mostly in Kangwon province and Kyungsang province and rock types were granite, gneiss, limestone, sand stone, and shale in the order of number of data. The study indicated that the blasting-induced vibration velocity was affected by the excavation types (tunnel, bench) and bench blasting induced higher velocity than tunnel blasting. In addition, the vibration velocity was also highly affected by the rock types and therefore, it can be concluded that rock types should be considered in the future to estimate a blasting-induced vibration velocity. Furthermore, the pre-existing criteria was compared with the results of this study and the comparison indicated that there was a discernable difference except for tunnel blasting results based on the square root scaling and therefore, further studies and interests, which include the effects of rock strength, joint characteristics, geological formation, excavation type, power type, measurement equipment and method, might be necessarily in relation to the estimation of blasting-induced vibration velocity in rock mass.
Keywords
Blast testing; Blasting-induced vibration; Field measurement; Rock type; Tunnel blasting; Bench blasting;
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