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EVALUATION OF BLAST-INDUCED DAMAGE EFFECTS ON UNDERGROUND
Abstract
Peak particle velocity is the most important criterion for analyzing dangers resulted from ground vibration. According to the investigations, this parameter can independently indicate the possible damage and is proportional to it. Up to now, investigators have proposed many different formulas to calculate this parameter, but none of them are applicable for all areas and based upon regional conditions such as geological, technical, geotechnical, rock mechanical and so on, only one of these equations can be adopted. Karoun3 Project is located in southwest of Iran, in an area with Asmary and Pabdeh formations. Peak particle velocity criterion is used to predict blast effects on the structures of this project. For this purpose, some blasts are carried out and in each blasting sequence, peak particle velocity, charge weight per delay and distance from blast centre have been measured. In the next step, two equations for prediction of peak particle velocity are developed using curve fitting. The optimum drilling and blasting patterns can be designed using these equations.
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References2
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