BLASTING VIBRATION ANALYSIS OF HIGWALL SLOPE STABILITY IN TUTUPAN MINING, PT. ADARO INDONESIA

• Main Author: TURNIP (NIM : 12106037 PROGRAM); , TONNI
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/19578
• Institution: Institut Teknologi Bandung

Peak Particle Acceleration (PPA) is produced because of blasting operation, it can not be direct used as a seismic factor on slope stability analysis. Use of Peak <br /> <br /> <br /> Particle Acceleration as a seismic factor, it will produce low safety factor and will not appropriate from the fact at site (Wong, H. N & Pang, P.L.R, 1995). <br /> <br /> <br /> Use of acceleration consider dominant frequency of blasting vibration which be at interval 5 – 200 Hz, whereas the dominant frequency of earthquake vibration <br /> <br /> <br /> which be at interval 0,1 – 2 Hz (Scott et.al., 1996). Therefore, on this research, acceleration value that are used as seismic factor are filtered at 0,1 – 2 Hz, or another mean, acceleration values as seismic factor are obtained from peak particle acceleration at peak particle displacement (PPD). <br /> <br /> <br /> Therefore, to find out the ground vibration effect of slope stability, critical acceleration calculation for highwall slope Section 10, 10A, 11 and 11A, Mining <br /> <br /> <br /> Tutupan, PT. Adaro Indonesia can be done with empirical approach and slope stability analysis at limit equilibrium. Result of calculation refers that critical <br /> <br /> <br /> acceleration for each section has variation which depend on high and slope inclination.