ANALYSIS OF DETERMINATION OF CRITICAL DISPLACEMENT VALUE ON SOFT MATERIAL SLOPE DUE TO BLASTING VIBRATION WITH NEWMARK DISPLACEMENT ANALYSIS
Blasting slopes cause vibrations that can affect slope stability. Slope stability can be determined by calculating the value of the factor of safety. The stability of the slope due to blasting can be seen from the amount of permanent displacement that occurs on the slope. The calculation of the disp...
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| Format: | Final Project |
| Language: | Indonesia |
| Online Access: | https://digilib.itb.ac.id/gdl/view/67362 |
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| Institution: | Institut Teknologi Bandung |
| Language: | Indonesia |
| Summary: | Blasting slopes cause vibrations that can affect slope stability. Slope stability can be determined by calculating the value of the factor of safety. The stability of the slope due to blasting can be seen from the amount of permanent displacement that occurs on the slope. The calculation of the displacement value can reduce the FK value. Therefore, slope stability analysis was carried out using numerical modeling using Slide2 software with the boundary equilibrium method to obtain dynamic FK values and Critical Displacement values using Newmark Displacement Analysis. Analysis was also carried out using the Strength Reduction Factor (SRF) method by reducing cohesion and internal shear angle. The greater the SRF, the greater the displacement value until the value is constant (collapse). The critical displacement is determined from the intersection of the two power regressions on the displacement graph with respect to the SRF. The results showed that Silty Clay material has a critical displacement value of 17 mm. Clayey Silt material has a critical displacement value of 17 mm. Silty Sand material has a critical displacement value of 17 mm. In general, the critical displacement value on soft material slopes is 17 mm. |
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