Perpustakaan Digital ITB

Mining has seen an increase in production over the past two decades, with mining methods becoming crucial in determining the effectiveness of exploration and mineral reserve production. Underground mining processes using the block caving method support production effectiveness and minimize adverse environmental impacts, but carry high safety risks. Workplace safety is an essential aspect to consider in the mining process. Geomechanical science in conducting mass monitoring and rock quality assessment is an effective method to minimize mining accidents. In principle, this method involves measuring the core that has been drilled to obtain the rock core's compressive strength value. The initial processing stage involves marking the coordinates of core sample collection at the mining site, where each core sample is classified based on lithology, followed by measurements of VpVs and Uniaxial Compressive Strength (UCS). In this study, petrographic analysis was conducted to provide information on the percentage of mineral components and to measure the mechanical and physical elasticity modulus values for each core sample. After the data was obtained, an analysis was conducted to classify the lithology based on the elastic modulus ratio of the core samples. The elastic modulus ratio for exoscarp is 752.21, classified as a high elastic modulus ratio and represents an area with the lowest potential for rock collapse compared to other areas. For limestone, the value is 590.04, classified as a medium to high elastic modulus ratio. For altered limestone, the value is 587.04, classified as a medium to high elastic modulus ratio and is an area with relatively stable rockfall potential. For marble, the value is 590.06, classified as a moderate elastic modulus ratio, and for diorite, the value is 659, classified as a moderate elastic modulus ratio, and is an area with the highest potential for rock collapse compared to other areas