Konsep Dasar

Open Cut allows you to:• Mensimulasikan suatu desain tambang untuk tahapan short-term

production operations & long-term feasibility studies• Menggunakan Minescape CAD tools untuk visualise dan

• Graphically.Dengan sistem perhitungan reserve yang dapat memastikan Vol ton dan Grades, sehingga setiap komponen dapat dihitung secara akurat dengan menggunakan software selain minescape.

OPENCUT PROCESS PREVIEW

OPEN CUT PROCESS

OPENCUT PROCESS

STARTING OPEN CUT PROJECT

1. Open Design file Block2. Create New layer (ex: Polygon)3. Copy duplicate polygon sheet/boundary area project to layer polygon

there are 2 ways to make boundary polygon; first using poly sheet togenerate batter block over all of the area project; and the second using

contour oratio and this way means only this area will be generate block4. Copy duplicate subcrop of lower seam that to be mined5. Create 2 line parallel with subcrop line which cover project area ( this line

will be used as reference to the generate strip)6. Create 2 line which across the first line ( this line will be used as

reference to generate block)7. Create Side definition for High wall, side wall and low wall using :

Minescape explorer Spec Create Spec category : Side8. Tag each side of the polygon boundary using menu Strip_Design Tag

Design Segments (for example : high wall using hw55, side wall usingsw55 and low wall using lw30).

Side DefinitionSide Definition

Side Wall

Batter Angle

Offset

Side DefinitionSide Definition

Side

Start batter/offset

End batter/offset

1 2

34

Side

Side

Side

Batter Block

Membuat Side DefinitionMembuat Side Definition

Membuat Side DefinitionMembuat Side Definition

Side Definition

Generate StripsStrip Design Generate Strips

Block Size

B01 B34Block Naming Direction

Block Size

Strip Definition

Generate Strips

S13

S01

Strip N

aming

direction

Side Definition

Generate Strip Intersection (BatterBlock)

Strip Design Strip Intersection

Merger Batter Block

After Merging process, Delete the Smaller Batterblock

Minescape Explorer Folder Block Process Merge Batter Block

Project Solids

Strip Design Project Solids

Solids Display

Tips :Solids dapat diproyeksikan, hanya pada area yang tercover oleh surface topo (pada area crest),Dan surface floor(pada Toe area).Sehingga baiknya disimulasikan dahulu untuk total areanya

Section Solids

Graphics Section Blocks

Section Results

Reserve Solids

2nd Days

Generate Sample Solids

Reserve Sample Solids

Solids Mining Evaluation

Total Percent : 50/50x100 Tonnes

Add Percent : 50/100x100 Tonnes

Adjustment/Monitoring from ROM

Reserves Evaluate samples Mining Reserves

Accumulate Sample

Accumulate table result

Reserve Accumulate Samples

Reformat BlockReserve Reformat Sample Block

Terminologi Calculated Reserve

Rawrecmass : Raw Recoverable mass = mass – (LossVol x RD)

Dilution Volume : Dilution/seam volume*100*RD/Dilution RD

Rommass: Raw Recmass*(100+Rom moisture)/(100-Dilution Volume*(100-Dilution Moisture)/100)

Productmass: (Rommass-(mass*Dilution/100*(100-moisture)/(100-Rommoisture)))*(Yield/100*(100-moisture)/(100-product moisture))

Create SR Colour

Terdapat 2 cara dalam melakukan proses ini:1. By MXL pembuatan beberapa Spec MXLtransfer to

table data acc / Reformat Minescape Explorer Action Resgraph

2. By Microsoft Excell; Data Accumulated/Reformat exportminescape Explorer Table Genricpilih TableImport to Excell used pivot & IFminescape ExplorerImport TableAction Resgraph

Create SR Colour used MXL

Minescape xplorerMXL Files Create

Minescape xplorerTable Files Genericmade new name table open folder Table column Create

Mincom Schema

MXL SR

Minescape Explorer Table files Generic + Name of tableOpen Folder Table Column Create

MINESCAPE EXPLORER-MXL FILES-CREATECreate Table SR

Resgraphic SR Colour

1. Export reformat tables reserve into excel2. Create new column , Coal Cum, waste Cum , SR Cum, and SR_clr_cum

Blockname OB COAL SR OB_CUMM COAL_CUMM SR_CUMM SR_Max4SOLB02S03 1320.424908 81.60457611B2/C2 IF(MID(A2,4,4)=MID(A1,4,4),B2+E1,B2) IF(MID(A2,4,4)=MID(A1,4,4),C2+F1,C2) E2/F2 IF(G2>4,200,(G2*(170-110)/4)+110)SOLB02S04 638.2804306 82.0840497 7.775937 1958.705338 163.6886258 11.966044 200SOLB02S05 531.3094552 121.4999027 4.372921 2490.014793 285.1885285 8.7311183 200SOLB02S06 433.5867374 148.1173401 2.927319 2923.601531 433.3058686 6.7472004 200SOLB02S07 497.5371284 156.765728 3.173762 3421.138659 590.0715966 5.7978365 200SOLB02S08 768.4255068 215.5657768 3.564692 4189.564166 805.6373734 5.2003101 200SOLB02S09 776.312133 180.8911514 4.291598 4965.876299 986.5285249 5.0336875 200SOLB02S10 839.1555602 183.5051498 4.572926 5805.031859 1170.033675 4.9614229 200SOLB02S11 995.1402402 185.1083984 5.375986 6800.172099 1355.142073 5.018051 200SOLB02S12 779.5135734 176.3910103 4.419236 7579.685673 1531.533083 4.9490839 200SOLB02S13 546.6651012 176.7699699 3.092522 8126.350774 1708.303053 4.7569726 200SOLB02S14 682.7194424 178.019249 3.835088 8809.070216 1886.322302 4.6699709 200

Resgraphic SR ColourMINESCAPE EXPLORERACTIONSRESGRAPHICS-PROCESS

Harus diisi

Resgraph SR Cumm Result

Create Pit DesignMinescape Explorer Spec CreateBenches

Create Polygon Pit from SR Cumm

INSERT RAMP

Strip_Design Ramps insert ramps

Generate Pit Design

Pit Project

Result of generate Pit design will create new layer name asaccording to name which filled at form, for example :crest_line; toe_line; Ramp line; and Rays_line. Copy duplicateobject from those layer into one layer for example pit_1

3Rd Days

INTERSECTION PIT INTERSECTION PIT

Create Pit Floor

1. Create new layer at design file Pit Design ( for ex : pit_floor)2. Attach contour structure floor of lowest seam, and copyduplicate to layer pit_floor3. Displaying polygon_pit and relimit that contour structureusing this polygon

Make Triangle Pit Design

Model Triangles Design

Create Intersection line between topo and pit designMinescape Explorer Triangle Files process

Clip Pit Design Over topo using surface topo

Minescape Explorer Surfaces All Surfaces Process

Result after Clipping using surface topo

Create Triangle Final Pit Design

Model Triangle Design

Final Pit Result

Pit Reserve Calculation

• Reserve Sample

• Evaluate Sample ( Mining Reserve )

• Accumulate Sample

Reserve Sample Triangles

Evaluate Sample ( Mining Reserve )

Reserve Evaluate Samples Mining Reserves

Accumulate Sample

Reserve Accumulate Samples

QUESTION

EVALUATION