Study on Optimization of Blast Design for Improving Fragmentation in Jeju Basalt Rock Area
MetadataShow full item record
Recently on Jeju island there has been a lot of development and construction. However random distribution of porous basalt and clinker seam generated from volcanic activities often interrupt and greatly reduce efficiency of blasting necessary for construction. Three test blasts were operated to solve the inefficiency problem and results indicated that a powder factor of 0.40~0.45 kg/cm3 is necessary to increase the efficiency of blasting. Also the blasting scheme should be concerned whether clinker seams exists in excavation levels or not.
Showing items related by title, author, creator and subject.
Near-field blast vibration monitoring and analysis for prediction of blast damage in sublevel open stopingFleetwood, Kelly Gene (2010)The work presented in this thesis investigates near-field blast vibration monitoring, analysis, interpretation and blast damage prediction in sublevel open stoping geometries. As part of the investigation, seven stopes ...
Quantification of rock mass disturbance using rock-mass property, rock characterization and blast characterization in underground hard-rockSharifzadeh, Mostafa; Pal, M. (2014)The rock-mass disturbance due to engineering activities is an important factor to estimate strength and deformability of rock-mass. Blasting practice in underground hard-rock mining is very common and so as disturbance ...
Hao, Hong; Li, Z.; Shi, Y. (2016)Some structures, both military and civilian, might experience explosive loads during their service life. Owing to high uncertainties in blast load predictions and structural parameters, accurate assessment of the performances ...