ANALYSIS OF HEIGHT DIFFERENCE BETWEEN UNDERCUT AND PRODUCTION LEVELS IN BLOCK CAVING METHOD TO INDUCED STRESS AT PRODUCTION LEVEL USING FINITE ELEMENT METHOD

• Main Author: ALFA K. A. NAINGGOLAN, SAMUEL
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/30790
• Institution: Institut Teknologi Bandung

Block caving method is a method commonly used in large scale ore production activities in the world. One of the factors that affect the efficiency of ore extraction is the stability at the production level caused by the induced stress. One of the things that affects the induced stress at the production level is the height difference between the undercut level and the production level. <br /> <br /> The study of block caving design guidance has been empirically conducted by Laubscher (1994) and Butcher (1999). This study aims to quantify some of the guidelines provided by Butcher (1999) to avoid damage to production levels. The parameter discussed in this study is the difference in distance between the undercut level and the production level. <br /> <br /> The results show that the higher the height difference between the undercut level and the production level will result in the decrease in the value of maximum induced stress at the production level. The maximum induced stress at distance of 10 meters to 15 meters decreased by 5%, at a distance of 15 meters to 20 meters decreased by 3%, while at a distance of 20 meters to 25 meters decreased by 1%.