STUDY OF THE EFFECT OF HORIZONTAL AND VERTICAL JOINT VARIATIONS ON TOPPLING FAILURE USING PHYSICAL SLOPE MODELING

• Main Author: Umam, Rofikul
• Format: Final Project
• Language: Indonesia
• Subjects: Pertambangan dan operasi berkaitan
• Online Access: https://digilib.itb.ac.id/gdl/view/36420
• Institution: Institut Teknologi Bandung

Failure on slopes can occur in various forms such as plane failure, wedge failure, toppling failure, and circular failure. The types of failure are influenced by various factors such as the geological structure and characteristics of the element material of the slope. In toppling failure, the main aspect that is very influential is how many joints in the rock layers that make up the slopes. Joints in toppling failure can be vertical joints and horizontal joints. Therefore, the presence and effect of the joint direction need to be analyzed. One method for analyzing slope stability which includes a variation of the joints parameter is to use physical modeling tested by a centrifugal device. The physical model of the slope in the centrifugal test is made by pile up slope blocks which have dimensional variations arranged in a vertical direction and horizontal direction with slope angles of 56,40 and 71,60 then given centrifugal acceleration of 0.16 g up to 1.03 g during 30 seconds. Centrifugal acceleration is intended to represent the acceleration of gravity in nature that occurs on slopes in the field. The experiment results show that the critical acceleration of the vertical joint is smaller than the critical acceleration on the horizontal joint, and the number of failure percentages in the vertical joint is greater than the number of horizontal joint failure so the vertical joint has more influence on the failure than the horizontal joint. In addition, the slope angle of 71,60 is also more influential on failure than the angle of 56,40 and the more joints the slopes, the more prone to failure