dewatering project pit alam 1 3

DEWATERING PIT ALAM 1 - 3

By : Engineering Dept.PT Ulimanitra – Site Muara Alam Sejahtera

MONTHLY PRODUCTION PLAN&

MINING SEQUENCESite MAS -LahatSEPTEMBER 2016

Data Curah Hujan & Durasi Jam Hujan

Tahun Januari Februari Maret April Mei Juni Juli Agustus September Oktober November Desember TOTAL Rata2 Max2003 268.00 463.00 398.00 283.50 96.00 10.00 165.00 83.00 151.00 279.00 251.00 506.00 2,953.50 246.13 506.00 2004 404.00 488.00 136.00 420.00 61.00 102.00 124.00 58.00 156.00 266.00 308.00 630.00 3,153.00 262.75 630.00 2005 524.00 399.00 497.00 443.00 259.00 215.00 145.00 160.00 218.00 305.00 329.00 89.00 3,583.00 298.58 524.00 2006 365.00 518.00 192.00 435.00 251.00 116.00 80.00 24.00 37.00 90.00 249.00 374.00 2,731.00 227.58 518.00 2007 466.00 152.50 51.00 269.00 80.00 85.50 41.00 23.80 150.50 261.50 229.00 438.00 2,247.80 187.32 466.00 2008 709.00 92.50 246.00 498.50 143.00 72.00 35.00 260.00 106.00 277.00 212.00 384.00 3,035.00 252.92 709.00 2009 405.00 339.00 293.00 317.00 37.00 144.00 69.00 137.00 155.00 248.00 276.00 472.00 2,892.00 241.00 472.00 2010 568.00 705.00 356.00 340.00 298.00 195.00 113.00 353.00 215.00 328.00 564.00 274.00 4,309.00 359.08 705.00 2011 175.30 319.90 200.90 180.60 374.80 327.40 57.60 21.30 114.50 300.10 265.20 660.70 2,998.30 249.86 660.70 2012 384.10 553.20 92.10 201.80 366.30 98.60 133.80 62.00 140.50 352.00 315.70 512.40 3,212.50 267.71 553.20 2013 572.60 324.40 472.15 300.00 425.20 161.20 283.80 111.30 168.30 371.00 275.60 509.70 3,975.25 331.27 572.60 2014 324.80 310.40 259.00 242.60 257.00 141.00 196.60 325.00 42.20 90.10 300.50 458.30 2,947.50 245.63 458.30 2015 245.10 382.90 203.30 251.20 127.50 81.00 9.50 102.20 3.30 8.20 359.50 448.30 2,222.00 185.17 448.30 2016 716.50 239.50 532.50 536.50 267.70 71.00 125.20 41.00 - - - - 2,529.90 210.83 716.50

Tahun Januari Februari Maret April Mei Juni Juli Agustus September Oktober November Desember TOTAL Rata2 Max2008 116.32 24.19 64.71 49.34 20.56 17.50 6.02 16.97 26.97 43.88 50.15 79.35 515.96 43.00 116.32 2009 65.24 51.96 55.62 48.67 9.94 19.75 15.35 11.61 16.51 20.09 33.21 67.66 415.61 34.63 67.66 2010 85.22 115.45 64.71 68.27 33.32 20.06 14.89 36.02 68.72 69.15 69.75 26.80 672.36 56.03 115.45 2011 44.00 85.00 36.50 32.50 43.30 72.00 25.00 13.90 34.20 47.10 64.82 143.80 642.12 53.51 143.80 2012 28.90 84.70 22.02 35.08 43.27 29.68 18.30 5.80 13.80 46.55 78.60 132.00 538.70 44.89 132.00 2013 108.30 116.97 61.83 79.38 72.77 9.03 67.22 14.23 47.27 44.52 73.37 110.65 805.53 67.13 116.97 2014 228.08 90.60 91.20 77.65 62.87 39.42 48.90 37.62 27.80 20.67 133.98 149.88 1,008.68 84.06 228.08 2015 83.10 132.10 95.30 98.65 35.95 25.43 25.82 51.30 18.40 19.20 100.36 275.15 960.76 80.06 275.15 2016 190.43 174.22 213.81 158.68 82.84 23.15 54.74 14.35 - - - - 912.22 76.02 213.81

Rata-rata 9 Thn + Up 20% (Digunakan untuk acuan 2017)Plan 2017 Januari Februari Maret April Mei Juni Juli Agustus September Oktober November Desember AVERAGE

Curah Hujan/Month 547.97 410.32 324.71 376.46 285.18 165.20 127.74 172.39 131.44 268.31 335.70 498.89 303.69 Curah Hujan/Hari 18.27 13.68 10.82 12.55 9.51 5.51 4.26 5.75 4.38 8.94 11.19 16.63 10.12 Durasi Hujan/Month 126.61 116.69 94.09 86.43 53.98 34.14 36.83 26.91 38.05 46.67 90.64 147.79 74.90 Durasi Hujan/Hari 4.22 3.89 3.14 2.88 1.80 1.14 1.23 0.90 1.27 1.56 3.02 4.93 2.50

DIS

HU

T M

ERA

PI

BA

RA

T P

T.M

AS

ACTUAL CURAH HUJAN AREA SITE PT.MUARA ALAM SEJAHTERASUMBER

DIN

AS

KEH

UTA

NA

N

MER

API

BA

RA

T K

AB

LA

HA

T

ACTUAL JAM HUJAN AREA SITE PT.MUARA ALAM SEJAHTERASUMBER

PT.M

AS

habibie_w:Jan s.d Mar 2014 Data IMWKApril s.d Des 2014 Data PSGTahun 2015 Data PSGTahun 2016 Data PSG

habibie_w:Jan s.d Mar 2014 Data IMWKApril s.d Des 2014 Data PSGTahun 2015 Data PSGTahun 2016 Data PSG

EXTREME FALL

ACTUAL FIELD CONDITION

Area RL Water Volume Water Area

Water Surface Pipe Outlet (m3) (m2)Block 2-3 Pit Alam 1-3 18 65 43,000.0 41,760.0

TOTAL HEAD 55

Elev. +65 m

Elev. +18 m

KeteranganElevasi Suction Elevasi Pompa ke air 16

Elevasi Discharge Ketinggian Permukaan air 18Panjang Suction Panjang tiap pompa 6

Panjang Discharge Panjang semua pipe 220Friction Rubber Hose gesekan 0.025

Friction HDPE gesekan tiap hdpe 0.0905Head Loss Fitting 1

Total Head : Head Static + Head DinamikHead Statik : Elevasi Suction (Q) + Elevasi Discharge (B)

Head Dinamik : Head LossRubber Suction + Head Loss HDPE + Head Loss FittingHead Loss Rubber Suction : Friction Rubber Hosek x Panjang Suction (P)

Head Loss HDPE Pipe : Friction HDPE x Panjang Discharge (A)

Head static 34Head Loss rubber Suction 0.15

Head Loss HDPE Pipe 19.91Head Loss Fitting 1

Head Dinamik 21.06Total Head 55.06











Section Sump UN - East EOM

160901

Plan Q4 PT MAS

Gradien 60 %

RL + 18Permukaan

Air

RL + 65

TOTAL HEAD MULTIFLO CF48

Section Sump UN – PSG - West EOM

160901

Plan Q4 PT MAS

Gradien 60 %

RL + 80

TOTAL HEAD MULTIFLO MultiFlo MF100

RL + 10Permukaan

Air











Monorobe equation :

R24 = Rainfall in 24 hourst = time (hour)m = rainfall coeficient, for Indonesia is 2/ 3

Statistic : GUMBELL DISTRIBUTION :Xavg = 10.123 ∑Ymi = 21.7448Standard deviation (S) = 4.655 Ym avg = 0.5436 ( Y40 avg)

Sy = 1.1559

Rainfall(mm/day)

1 18.272 13.683 10.824 12.555 9.516 5.517 4.268 5.759 4.38

10 8.9411 11.1912 16.63

Extrem Rainfall*

No Data

STDEV 4.66Avg 10.12

No. T YT XT (mm) IT (mm/hr)1 5 1.4999 13.9747 9.31652 10 2.2504 16.9971 11.33143 15 2.6738 18.7023 12.46824 20 2.9702 19.8962 13.26425 25 3.1985 20.8159 13.87736 30 3.3843 21.5641 14.37607 35 3.5409 22.1947 14.79658 40 3.6762 22.7399 15.15999 45 3.7954 23.2200 15.480010 50 3.9019 23.6489 15.765911 55 3.9982 24.0365 16.024312 60 4.0860 24.3900 16.260013 65 4.1666 24.7150 16.476714 70 4.2413 25.0157 16.677215 75 4.3108 25.2955 16.863716 80 4.3757 25.5572 17.038117 85 4.4367 25.8028 17.201918 90 4.4942 26.0344 17.356219 95 4.5486 26.2533 17.502220 100 4.6001 26.4610 17.6406

SOLUTION & ANALYSIS

ACTUAL FIELD CONDITION

Water Volume Water AreaWater Surface Pipe Outlet (m3) (m2)

Block 2 -3 18 65 43,000.0 41,760.0

Area RL

PUMP REQUIREMENTAssumptions : Pump hour = 18 hours/day

liter/sec cu.mtr/hourMultiFlo CF 48 62 225 78Slurry Pump 65 215 62Note : 1 liter/ sec = 3.6 cu.mtr/ hour * Obtained from pump curve

Estimate flowrate efficiency (%)*Pump

CA = 70,14 HaFlowrate Volume for 1 hour

( m2) (km2) (m3/sec) (m3)Block 2 - 3 701,400.00 0.70 3.10 11,144.74

Area Catchment Area

PROJECTED FLOWRATEExtrem Rain Times Plan 3 timesRun-off coefficient 0.9 Gradien > 15 %Projected Rainfall Int. 17.6 mm/hr

IF NO RAINS OCCURRED DURING PUMPINGWater Volume Pump Flowrate

(m3) (m3/hr) Hours DaysBlock 2 -3 43,000.0 225 191 11.94 MultiFlo CF 48

Area Time Required Actual Pump Type

IF RAINS OCCURRED WITH 1 HR PEAKSTORM 3 TIMES DURING PUMPINGWater Volume Rain Vol 1 hr Flowrate

(m3) 3 times (m3/hr) Hours DaysBlock 2-3 43,000 33,434 225 339.71 18.87 Multi Flo CF 48

33,000

Area Time Required Actual Pump Type

SOLUTION & ANALYSIS

4.844762985.8925656396.4837270456.8976431067.2164670777.4758393777.6944887397.8834856168.0499213388.1986127928.3329818678.4555470338.5682158128.67246769

8.7694733278.8601749448.9453421499.0256116869.10151636

9.173506498

Project Flow Rate Run Off - River

Project Flow RateCatchment

Plan Joint Sump UN - PSG

Note :- MultiFlo CF48 Recommended for Total Head 55 m ->

actual Field Condition Section Highwall to KPL UN = 2 Unit / 1 Unit CF48 & 1 Unit MF100

- MultiFlo MF100 Recommended for Total Head > 75 m = Joint Sump PSG – UN Case Project

- Gradient Dinamic & Static Total Head +- 60 % from Wall = Optimum Pump Graphic

- Pump HL 200 M Recommended but High Cost & Capacity KPL PT MAS ?

- KPL PSG Capacity for 2 Pump Require PSG & UN = 581 bcm/hour PSG Pump + 225 & 981 bcm/hour UN Pump. (Block 6 -7 ) ?

- Target Slurry Pump Debit Capacity 200 – 225 bcm/hour for Slurry Area

- Slurry Sample 35 % Solid & 65 % Water- Time Schedulle Pump Multiflo MF100 Delivery is

December 2016- Joint Sump PSG – UN block 6 -7 by Overflow / Ground

Canal

PUMPING PLANParameters : Target Pumping (hours) and Estimate Flowrate

IF NO RAINS OCCURRED DURING PUMPINGWater Volume Pump Estimate Flowrate Pump

(m3) (days) (hours) Plan liter/sec cu.mtr/hour RequiredMultiFlo CF 48 62 225 3.9 Recommended

Multiflo MF100 255 918 1.0 Recommended

Block 6 - 7 33,000 2 36 Multiflo MF100 255 918 1.0 Recommended

HL 200 M 375 1,350 0.7 Recommended, High Cost

IF RAINS OCCURRED WITH 1 HR PEAKSTORM 3 TIMES DURING PUMPINGWater Volume Rain Vol 1 hr Pump Pump Remarks

(m3) 3 times (days) (hours) Plan liter/sec cu.mtr/hour RequiredMultiFlo CF 48 62 225 4.2 RecommendedMultiflo MF100 255 918 1.0 RecommendedMultiflo MF100 255 918 0.4 RecommendedHL 200 M 375 1,350 0.3 Recommended, High Cost

Estimate Flowrate Area Target Pumping

RemarksArea Target Pumping

Block 2-3 43,000 3 49

Block 2-3 43,000 33,434 5 81

Block 6 - 7 33,000 33,434 9 162

Slurry Pump Plan - Actual

Mine Schedulling Three Monthly Rolling Plan (End of Oktober 2016)

KPL PIT

Water Sump

Slurry Sump

Water Sump

Joint Sump PSG - UN

Water Flow

Seam B1

Slurry PumpMultiFlo CF48

Proposed Road

Note : - Proposed Road Side

Wall maximum Grade 6 %

- 1 Unit Pump MultiFlo CF48 Available

- Slurry Pump Continue to KPL Perusda Debit Range 250 – 300 bcm/hour with Percent Solid 50% - 50%

- Overhaul Distance Front Low Wall Status UN – MAS

- Water Flow Block 5 – 7 to Block PSG 8

- Joint Sump Elevation +5

Water Sump

Joint Sump PSG - UN

Seam B1

Slurry PumpMultiFlo CF48

Water Sump

Water Flow Slurry

Sump

KPL PIT

Road

Mine Schedulling Three Monthly Rolling Plan (End of November 2016)

Note : - 1 Unit Pump

MultiFlo CF48 Available to KPL PIT

- Slurry Pump Continue to KPL Perusda Debit Range 250 – 300 bcm/hour with Percent Solid 60% - 40%

- Overhaul Distance Front Low Wall Status UN – MAS



Joint Sump PSG - UN

Seam B1Water Flow

KPL PIT

MultiFlo MF100

To KPL PIT PSG

Mine Schedulling Three Monthly Rolling Plan (End of December 2016)

Note : - 1 Unit Pump

MultiFlo MF100 Available to Block 8 – 9 (4th Week Dec 2016)

- Water Flow & Joint Sump Blck PSG 8 - 9

- Coal Getting Seam A1, A2 & B1



- Request HDPE Quantity = 300 m (50 Pipe @ 6 m)

To KPL PIT PSG

Cảm ơn bạnधन्यवाद谢谢

СпасибоTerima Kasih

ขอบคณุ

Created By : Engineering Dept.

PT Ulimanitra Site Lahat

MONTHLY PRODUCTION PLAN&

MINING SEQUENCESite MAS -LahatSEPTEMBER 2016

dewatering project pit alam 1 3

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