Mine Planning ConceptEquipment operation/ production Parameters.Design CriteriaScheduling Methodologies.

EQUIPMENT OPERATION/ PRODUCTION PARAMETERSOperation ParametersProduction Parameters

EQUIPMENT OPERATION PARAMETERS

EQUIPMENT PRODUCTION PARAMETERS

EQUIPMENT OPERATION/ PRODUCTION PARAMETERSSupport Equipment : PC200, Dozer, Wheel Dozer and Grader, see Performance Hand book KOMATSU and CATERPILLAR.Ancillaries Equipment: Pump etc, see EOM Spec.

Design CriteriaPIT.ROAD.DISPOSAL/Stockpile .SUMP, Drainage.Drill/Blast Design.

Design Criteria- PITMine Engineering Concept of Pit Slope design objectives: Economically to maximize reserve extraction with reasonable probability of slope may fail.Mine Geotechnical Advance Concept (metal mining): Maximize slope angles while managing impact on stability by:Maintenance of Stability.Preventing failures that will effect over all operation.Assessment of Risk vs Benefit.Slope design criteria: Stable and safe while working closed to wall (operation).

Design Criteria- PITSlope Design Parameters:Probability of failure and failure mode.Over All slope angle.Total bench height and single bench height.Single slope angle (Bench face angle).Catch bench width.

Typical pit design geometry

Design Criteria- PIT

Design Criteria-Road

Design Criteria-RoadJalan di Pit

Jalan Utama

DIAGRAM JARAK PANDANG28

Design Criteria-Road

DISPOSAL/Stockpile .

DISPOSAL/Stockpile .

SUMP & Drainage.SUMP definition/objectives:Collecting point of in pit surface run off from in pit catchments area.Placing at the lowest point of in the pit based on period of one cycle of rain season.Sump size = Quantity of surface run off - Capacity of 1 day continuous pumping - free board (1-2m).Control Box= Lowest point in the sump for placing suction hose cage and sediment containment.

SUMP & Drainage.In pit Drainage : Collecting and conveying surface run off to the sump/temp sump.Gradient = +3%, less than 1% sedimentation, greater than 5% erosion.Located: Along road side, along toe of working bench.Size and structure: Depend on volume and velocity of water.Design life time based on rain storm cycle.

SUMP & Drainage.Out pit drainage (fresh water): Collecting and conveying jungle surface run off from entering pit/working area.Out pit drainage (impacted water): Collecting and conveying impacted water from active working area into settling pond.

Drill/Blast Design.Objective design :Loosening enough material for maximum dig ability.Inventory of material to be mine.Vertical advancement of pit development.Minimize instability of pit wall.

MINING TERMINOLOGYSPACINGBENCH HEIGHT > 2 X B maxBENCHHEIGHTCOLUMNCHARGETOTALCHARGEHOLEDEPTHBURDENaSUB DRILLINGGEOMETRI PELEDAKANMENURUT : R.L. ASHSTEMMINGBOTTOMCHARGE

SCHEDULING METHODOLOGIESObjectives:To maximize net present value of extraction of mining commodity.To achieve estate of mining.

SCHEDULING METHODOLOGIESHOW:STRIPS = Opening size for activity Loading/Hauling and drilling blasting for inventory as required. Strips in strike direction of coal reserves.BLOCKS = Length of strip for one bench height at predetermined gradient of road at strike direction. Blocks in dip direction of coal reserves.ELEVATION = Vertical distance from surface topography to coal reserve, base on bench height definition (0 elevation reference).

SCHEDULING METHODOLOGIESSTEP#1: Define first area to be mine out for starting in pit dump.Define minimum vertical distance between topography and bottom of coal seam.Starting point at bottom of coal seam define top of entry point at topography surface.Design and construct ramp from surface to bottom of coal seam to direction of disposal location.Define volume of block to be mine out first from top of ramp to bottom of ramp.Define ex pit disposal size base on LCM volume of block first mine out.

SCHEDULING METHODOLOGIESSTEP#2: Define scheduling rule to achieve maximum Net present Value.Maximum Delta elevation between Block in one strip.Maximum Delta elevation between Strip in one block

SCHEDULING METHODOLOGIESSTEP#3: Generate reserve Reporting Table based on Strips, Blocks and elevation.Strips were off set perpendicular from high wall at distance (wide) to accommodate Loading/Hauling and drilling blasting.Blocks were off set perpendicular from side wall at distance (length) to accommodate ramp for one bench.Bench Elevation was set based on Pit bench geometry.

SCHEDULING METHODOLOGIESSTEP#4:Allocate equipment capacity per period (weekly), based on scheduling rule to maximize coal exposed (Using scheduler or spreadsheet).Start with available inventory to mine, allocate loading and hauling equipment.Provide inventory trough drill/blast activity to direction of mining (Strip, block, elevation).Reporting quantity of coal exposed per period

SCHEDULING METHODOLOGIESSTEP#5: Digitize pit face position per period base on scheduler/spreadsheet information.STEP#6: Define most economic access by overlay face position from first period to the next period.STEP#7: Digitize disposal face position per period based on allocated material and most economic access for truck haulage (Haul longer or higher and when add trucks).STEP#8:Asses in pit drainage direction to sump and out pit drainage. Control out pit surface run off entering working face and control in pit surface run off water level below working level trough pumping as necessary.

DIMENSI KERJA ALAT MUAT :adalah standar parameter untuk menentukan ketinggian dan lebar jenjang kerja sesuai dengan besar kecilnya alat muat sehingga operasional dapat berjalan dengan benar dan aman, adapun penentuannya adalah sebagai berikut

DIMENSI KERJA ALAT MUAT :adalah standar parameter untuk menentukan ketinggian dan lebar jenjang kerja sesuai dengan besar kecilnya alat muat sehingga operasional dapat berjalan dengan benar dan aman,Produktivitas Alat Muat Material Overburden adalah standart parameter untuk pedoman para pengawas operasional