Estimation particle velocity on the basis of blast event measurements for an infrastructure excavation located nearby Istanbul

Abstract

The ground motion produced by detonation of an explosive charge is of a great importance regarding to vibration control and prevention of damages of nearby either above ground or buried structures. Therefore environmental problems arisen from ground vibration and air blast have been faced and discussed frequently in various industries such as mining, construction, quarry etc, where blasting is an unavoidable operation. Peak particle velocity together with frequency is still an important and useful predictor for design of cautious blasting in order to minimize the environmental issues. This paper presents the result of ground vibration measurements induced by bench blasting carried out at the excavation activity for construction of an organised industrial region (TOSB) located nearby Istanbul. Within the scope of this study, in order to predict peak particle velocity level for this' site that granite encountered as major rock unit, bench blasting operations were carried out and ground vibration components were measured for all blasting events, during bench blast optimisation studies over a long period. At the end of a statistical analysis of 149 data sets, an empirical relationship between peak particle velocity and scaled distance, which gives the 50% line and the upper bound 95% prediction limit, was established with reasonable correlation and suggested to evaluate the vibration impact both past and future blasting for this site.