Study of Rockburst Damage Potential Using Microseismic Data on Limestone in Production Level of Block Caving Mine XYZ

• Main Author: DARUADJI PRAGNYONO (NIM : 12114094), SATRIO
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/30844
• Institution: Institut Teknologi Bandung

The underground mining system associated with high stress becomes the future for the mining world. One of the main concerns in this mining system is its association with dynamic rock mass failure, often called mining induced seismicity resulting from failure in a rock mass (Hedley, 1992). A high stress condition causes the rock to failure, resulting in great damage to the opening, which can be indicated as rockburst (Ortlepp, 1997). XYZ mine is an underground mining with Block caving mining method which has lithology of limestone. The occurrence of rockburst on the XYZ mine has the potential for damage to existing panels. Potential damage due to rockburst can be calculated through the calculation of PPV and EVP. The objectives of this study were to determine the value of PPV (Peak Particle Velocity), determine the value of EVP (Excavation Vulnerability Potential), and the potential damage due to rockburst (RDP) on the limestone using graphic relationship between PPV and EVP. The results of this study indicate that limestones have varying PPV values depending on the magnitude and distance of the source to each panel. EVP value on panel drift and drawpoint is equal to 64.86 and at intersection equal to 186.49. The presence of both PPV and EVP values shows the damage scale on the drift panel and the drawpoint will show the damage scale R1 with PPV 0 - 0.733 m / s, R2 scale with PPV 0.733 - 2 m / s, R3 scale with PPV 2 - 2,617 m / s, R4 with PPV 2,617 - 3,529 m / s, and R5 scale with PPV 3,529 - 6 m / s. While the intersection will show the damage scale R1 with PPV 0 - 0.264 m / s, scale R2 with PPV 0.264 - 0.4 m / s, R3 scale with PPV 0.4 - 0.911 m / s, R4 scale with PPV 0.911 - 1.264 m / s, and R5 scale with PPV 1.264 - 6 m / s.