PROJECT REPORT ON DEVELOPMENT OF SOFTWARE FOR BLAST VIBRATION ANALYSIS
IN PARTIAL FULFILLMENT OF THE REQUIREMENTS OF THE DEGREE OF BACHELOR OF ENGINEERING IN

MINNING ENGINEERING

By DINABANDHU BAG Under the Guidance of

Prof. N.K.Patnaik and Prof. Pradeep Sharma National Institute of Technology Rourkela

1994

Ground vibration from blasting is an undesirable but inevitable side effect of the use of explosives. High intensity of ground vibration can induce extensive structural damage and cause human psychological discomfort. The PPV has been widely accepted as a measure to assess the damage potential of blasting. This project deals with the significance of the dominant frequency content of the blast waves. The frequency range of waves against the power associated gives a bettwr picture of the blast vibration analysis. The input data of the blast event utilized in this project was collected by blasting carried out in a meteliaferrous mines.

ACKNOWLEDGEMENTS

I am thankful to all those who directly or indirectly helped me complete this project. I am grateful to the mining organization, who made us available their blast vibration data. I am thankful to my project supervisor Prof. N.K.Patnaik and Pradeep Sharma who provided me the necessary guidance and inspired me to learn from them to finish this analysis successfully.

a open cast metalliferous mines.

TABLE OF CONTENTS NUMBER 1 2 3 4 5 6 7 CONTENTS DESCRIPTION INTRODUCTION BLAST WAVES AND VIBRATION ANALYSIS FREQUENCY SPECTRA DFT AND ALGORITHM PROGRAM OUTPUT AND DATA ANALYSIS BIBILIOGRAPHY PAGE 5 11 21 23 31 34 35

Is essential.