EVALUASI GEOMETRI JALAN ANGKUT PADA PENGUPASAN OVERBURDEN MENUJU DISPOSAL DI PIT MAHAYUNG 1 PADA PT BUKIT ASAM Tbk SUMATERA SELATAN

Abstract

Road geometry in the transportation of overburden material in mines refers to the design and construction of roads used to move non-valuable materials from mining areas to designated disposal or storage areas. This involves considerations such as slope, road width and road curvature to ensure efficiency and safety in the transportation process. On mining roads, damage to the road body is often found, such as potholes and the road surface is not smooth. This is caused by several parts of the road experiencing subsidence and the presence of stagnant air on the haul road. Apart from these problems, the relatively narrow condition of the road results in queues for the transport equipment used, and there are several parts of the road that have a steep slope. In this research the author discusses road geometry including: observing straight roads, width at bends, grade, superelevation and cross fall for all geometric segments into 20 segments, of which there are 10 segments in straight road conditions and 10 segments in open road conditions. Every geometric parameter of the haul road observed does not have a good standard, therefore improvements need to be made so that the Overburden transport material can run well and smoothly so that the production target can be achieved. The results of the calculation of the productivity of transportation equipment which have been obtained from theoretical calculations for the HD 785 transportation equipment with hull number 4220 are 308.96 Bcm/month, and for the productivity of the HD 785 transportation equipment with hull number 4238 it is 313.35 Bcm/month. So these results have not been able to reach the monthly production targets set by the research team. This has an impact on the geometry of the mining roads in the research because at the research location there are still several segment haul roads that do not meet the standards.