2-s2.0-85084680936

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[vc_row][vc_column][vc_row_inner][vc_column_inner][vc_separator css=”.vc_custom_1624529070653{padding-top: 30px !important;padding-bottom: 30px !important;}”][/vc_column_inner][/vc_row_inner][vc_row_inner layout=”boxed”][vc_column_inner width=”3/4″ css=”.vc_custom_1624695412187{border-right-width: 1px !important;border-right-color: #dddddd !important;border-right-style: solid !important;border-radius: 1px !important;}”][vc_empty_space][megatron_heading title=”Abstract” size=”size-sm” text_align=”text-left”][vc_column_text]© 2020 ISRM.In this paper, analysis of dynamic stability is carried out for highwall and lowwall slopes in an open cut coal mine in Indonesia. An explicit-based finite difference program called Fast Lagrangian Analysis of Continua (FLAC) is used to perform the static and dynamic simulations of the mine slopes to monitor various problems during the seismic excitation from the blast wave, including the maximum permanent deformation, the peak particle acceleration (PPA), and the peak particle velocity (PPV). Two stability criteria are used to evaluate the dynamic stability of the slopes due to blasting: (1) the maximum permanent deformation and (2) the dynamic factor of safety (FoS). The results of dynamic simulations in FLAC suggest that the blast pattern should be designed so that it will not exceed the predicted PPV = 18 mm/s and PPA = 0.04 g for the highwall slope and the predicted PPV = 34 mm/s and PPA = 0.08 g for the lowwall slope. In addition, unlike the PPA, the maximum permanent displacement is not that sensitive to the stability of the mine slopes under dynamic loading.[/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”Author keywords” size=”size-sm” text_align=”text-left”][vc_column_text]Dynamic loadings,Fast Lagrangian analysis of continuum,Particle acceleration,Peak particle velocities,Permanent deformations,Permanent displacements,Seismic excitations,Stability of the slopes[/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”Indexed keywords” size=”size-sm” text_align=”text-left”][vc_column_text][/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”Funding details” size=”size-sm” text_align=”text-left”][vc_column_text]The authors gratefully acknowledge the research grant from the Research Program for the Community Service of Institut Teknologi Bandung, fiscal year 2018 (PM-ITB-2018). The authors also thank PT. Adimitra Baratama Nusantara (ABN) for allowing this research to be undertaken at the ABN mine site. In addition, this research would not have been done without a helpful collaboration from PT. Cipta Kridatama, who was the first to address this research topic.[/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”DOI” size=”size-sm” text_align=”text-left”][vc_column_text][/vc_column_text][/vc_column_inner][vc_column_inner width=”1/4″][vc_column_text]Widget Plumx[/vc_column_text][/vc_column_inner][/vc_row_inner][/vc_column][/vc_row][vc_row][vc_column][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][/vc_column][/vc_row]