STUDY OF TOPPLING FAILURE MECHANISM ON OPEN CAST SLOPE MODEL WITH CENTRIFUGAL TEST

• Main Author: SRI LESTARI (NIM : 12114032), WAHYUNI
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/31537
• Institution: Institut Teknologi Bandung

Mining activities of mineral and coal in Indonesia implemented open pit method, consists of excavation and stacking that will always have problems of slope stability. Blasting activities, vibration from equipments, and earthquakes will greatly affect the stability of the stope and the result will be slope failure. One type of slope failures is toppling failure. One of a way to analyze slope stability is to do a physical modeling in the laboratory. One of physical modeling used to represent the variables that occured in the field is centrifugal test. <br /> <br /> There are three physical models of slope that will be tested using centrifuge test: overall slope model, open pit slope model, and open cast slope model. Every slope model has angle of 53.13o, horizontal joint spacing fixed at 12 cm, and vertical joint spacing fixed at 6 cm. Those models will be given centrifugal acceleration of 0g, 0.26g, 0.67g, and 1.5g for 15 seconds. <br /> <br /> The result of the test shows the model of the slope affects the slope stability, critical acceleration, and the volume of failures. The lowest volume of failure of the three is open pit model, while the highest volume of failure is the open cast model, and volume of failure the overall slope model falls between the two.