Technical design of mining sequences to support production targets

Mining planning starts with calculating mining reserves, making a graphical analysis to find out the Stripping Ratio limits, and making a mining sequence design in accordance with the production target. Then, making a forecast of the need for mechanical equipment and finally create a mining scheduling by software. Based on the existing pit at the boundary of Sequence and the southern limit of the Stripping Ratio area in 2023 it is obtained that as 12 units for loading and 24-30 units for hauling. 1 unit of hauling equipment for overburden and 3 units of hauling equipments for coal. Pit design can be planned to be 4 quarterly. It can be known the estimated total coal reserves are 4,066,102 MT, Overburden 5,336,787 CCM, with a stripping ratio of 1.34 bcm/ton with an open pit area of 40.93 Ha. Design of disposal located in the northern area. Design of Pit with an average distance of 1200 Meter. The total disposal capacity based on design is 5,651,877 CCM with an area of 35.25 Ha. This condition can accommodate the entire 2023 Pit area.