THE EFFECT OF THE SPACE OF EXCELLENT TEETH ON THE SPECIFIC ENERGY OF EXCUREMENT IN GYPSUM MATERIALS USING A LABORATORY SCALE DRAG PICK

• Main Author: Gautama, Bima
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/69314
• Institution: Institut Teknologi Bandung

Excavation in mining activities is generally divided into two parts, namely continuous and discontinuous. Equipment that is often used in continuous systems is non-conventional digging machines, such as bucket wheel excavators (BWE) in open pit mines and roadheaders in underground mines. The main type of digging gear used in these tools is generally a drag pick. Factors that influence the selection of this digging tool include rock factors and the characteristics of the digging tools. One of the characteristics of a digging tool that is very influential in the excavation process is the suitability of the spacing of the teeth used. This study was conducted to determine the effect of spacing on excavated teeth on rock intersecting. In this study, we will look for the optimum spacing in terms of the cutting force and the specific energy obtained. To determine this relationship, a cross section test will be carried out using a Linear Cutting Machine (LCM) and a drag pick digging tooth with a width of 4 cm and a back clearance angle of 0o. This test will also be carried out on gypsum samples with a compressive strength of 7.11 MPa. Experiments were carried out using a drag pick with variations in the spacing of 45 mm, 50 mm, 55 mm, and 60 mm. The depth of the test will be carried out at the same depth of 10 mm. From the test results, it is found that there is a relationship between the excavation space and the specific energy. From the research, it can be concluded that the most optimum (low) specific energy in gypsum material is found in the 55 mm spacing between the excavated teeth, which is 0.597 MJ/m3 with the average method and 0.601 MJ/m3 using the discrete method.