SLOPE STABILITY ANALYSIS OF QUARTZ SAND FROM TIN ORE TAILING USING PARTICLE FLOW CODE METHOD

• Main Author: Teng, William
• Format: Theses
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/75186
• Institution: Institut Teknologi Bandung

Tailing is a residue that is not a target mineral and is usually considered less valuable. Tailing materials from the processing plant will be placed in an area called a tailings storage facility (TSF). However, tailing may contain materials or minerals that are valuable. For example, tailing from tin mining contains quartz. TSF mining can be done to exploit materials that have the potential for reuse. In the process of quartz tailing mine operation, slopes will form in the excavation boundary area. Slopes formed of loose material have a higher risk of instability. In this study, slope stability will be analyzed using the PFC method. The input parameters of the PFC method are grain size distribution and material microparameters obtained from calibration results between macro parameters obtained from laboratory test results with macro parameters that obtained from UCS simulation using PFC2D software. The simulation was carried out on a slope model obtained from the recommendation of the Hoek & Bray (1981) graph with a height of 25 meters and a variable slope. The modeling results show that slopes with angles of 26o-39o experience instability and do not show any sign of instability at slope angles of 24o. In addition, from the model simulation, it was obtained that models with a gentler slope angle experienced a smaller displacement compared to models with steeper slope angles. From this study, it can be concluded that the greater the slope angle will result in greater displacement and instability.