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A laboratory scale of physical modeling of slope failure generated by centrifugal acceleration with several water content scenarios
Wicaksana Y.a, Kramadibrata S.a, Wattimena R.K.a
a Laboratory of Geomechanics and Mine Equipment, Institut Teknologi Bandung, Indonesia
[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]© 2014 by Japanese Committee for Rock Mechanics.Slope stability is one of the most important factors in the surface mining operation. Factors that affect slope stability are shear strength, rainfall, ground water, geological structures, seismicity due to blasting and earthquake. Those parameters should be carefully considered, otherwise, the risk of slope failure will increase. It is well known that slope failure risk consists of probability and consequence of the slope failure and expressed as the multiplication of these two factors. A laboratory scale experimentation to study slope failure mechanism and consequence was performed by using centrifuge which was built in house by the Laboratory of Geomechanics & Mining Equipment of ITB in Indonesia. Small scale experimentation has a lot of advantages to determine failure mechanisms, namely, easily-controllable test conditions, adjustable slope geometry and material used. The material used in this study was clayey-silt with geometry of 15 cm high and 35° of slope angle. Centrifugal acceleration with the maximum of 3.81g was applied to the slope model with the variation of water content of 0%, 5%, 10% and 15%. By spinning the centrifuge at the different levels of acceleration and water contents, the slope failure mechanism and collapsed slope model were investigated. Generally, the applied centrifugal acceleration to initiate the slope failure gets larger when the water content of the slope model increases. To measure the consequence, four cameras were attached to capture the slope condition during the test. Photogrammetry technique was used to digitize the pre-failure and post-failure slope surface condition which can be overlaid to determine the failure mechanism and to measure the volume of collapsed slope model. The general relationship model among slope height, water content, cohesion, gravitational and centrifugal acceleration was proposed.[/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]Centrifugal acceleration,Failure mechanism,Geological structures,Mining operations,Physical model,Relationship model,Slope conditions,Test condition[/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]Centrifuge,Failure mechanism,Physical modeling,Slope stability,Water content[/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][/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]