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8/17/2019 Case Study - MineSched at Sebuku
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Case Study Application of MineSched at Sebuku
April 2007
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Straits Asia Resources:
Part of the Straits group of companies.
Recently listed on Singapore Stock Exchange
Operates Sebuku oal Mine in South !alimantan
Objectives of this Presentation:
". #escribe the geology$ conditions and mining methods at
Sebuku%. #iscuss the implementation of MineSched and ho& it is
used in planning and Scheduling at Sebuku
Introduction
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Location and History
O' a&arded "(()
oal mining commenced #ecember "((* +irst Shipment ,anuary "((-
Mining ontractor ukit Makmur Mandiri
/tama 0/MA1
Plant ontractor 2eightons ontracting
3ndonesia 0231
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45km from north to south$"6km at &idest point.
7opography:
8series of hills to east.
8fresh&ater s&s to &est.
'estern coast is bordered by
mangro9e forests.
/p to %66$ most coal mined
from the relati9ely shallo& pits
to the south. Remaining kno&n reser9es are
in and to the &est of the 7anah
Putih pit.
Pulau Sebuku
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Production
Coal Production
Resources and Reserves
3ncreasing production$
resources and reser9es.
Resource con9ertible upon
land use redesignation.
Hi! volatile bitu"inous coal# As!$ %#&' Sulp!ur$ 0#7' Calori(ic )alue$ *+&00 ,ad- .otal /oisture$ 1'
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eoloy 3 Cross Section
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eoloy 7anah Putih pit is located in
fresh&ater s&:
2o&er than high tide le9el58%6m o9erlying mud
Significant ;E8S' oriented
normal fault system &ith
displacement up to 46m.
#ip 5 to "6 degrees to &est
Strata consists of &eak
mudstone and shale &ith
interbedded coal seams.
4ault
Pit Li"it
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# /inin /et!od 3 5und
Peri"eter 5und
/anrove S6a"p
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2# /inin /et!od 3 /ud
/ud Cell
/ud 4ace
5und
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/inin /et!od 8aste
/ud /inin$ 9ier positioned on
!ard (loor and pulls "ud do6n#
:;uip"ent
PC210 e H9?*1 trucks 0
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?# /inin /et!od Coal
8as!
5ypass 3 Hi! As!
5ypass 3 Lo6 As!
:;uip"ent
PC?00 e
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/inin /et!od Pit 9e6aterin
Su"p and Pu"ps
Settlin Pond and Li"in
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/ine Plannin
Constraints that determine mining and dumping strategy:
". 'estern limit is not an economic limit 0land use designation1
%. 2ikelihood of future extensions to &estern permits
4. 'orking Space in Pit and expanding production
). Management of Pit 'ater
5. Expose multiple seams for blending
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/ine Plannin Stratey
Pit di9ided into Strips 0*6m1and locks 0up to )66m1
Open up pit along the strike
7erraced mine faced exposing
different seams.
Main access road and ramps topit floor.
Mud and upper interburden
dumped to out of pit dumps.
#ump o9erburden in8pit bet&een
ramps as the pit progresses. Ad9ance face at lo&est area
during dry season and install
pumping infrastructure.
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O5 9u"p
Lo 6er Sea" In ter b
urden
/ud Cell
/ud
@pper Sea"
Strip Strip BStrip
*6m
/ine Plannin Stratey
.oe o( du"p o((set (ro" "ine (ace
to assist 6ater "anae"ent#
/ud cells constructed 6ell back (ro""ine (ace to "ini"ise risk o( (ailure#
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Processin and S!ippin
Coal /inin
RO/ S>P
5P Crus!er 8as! Plant
Port S>P
5are Loader
=56> =56>
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Surpac )ision used for geological modeling?$
sur9eying and mine planning.
ompany standard @ used at all Straits sites.
Ease of use.
onsistency bet&een sites.
Adapted for use in a stratigraphic deposit.
/ine Plannin and eoloy
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eoloical /odel
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/ine Plannin and Sc!edulin
C!allenes at Sebuku$
Pit getting deeper &ith production expansion.2imited room in pit.
2arge number of &aste and coal fleets.
#iscipline in Mining Practice
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# Pit 9esin
2# enerate Reserves
Sc!edule 8aste /inin
?# Sc!edule Coal /inin
1# Coal 8as! and Production
*# Ra"p and 9u"p 9esin
7# /aterial 5alance
=# Co""unicate Plan
Process 3 5e(ore /ineSc!ed
Surpac
Spreads!eet
Spreads!eet
Spreads!eet
Spreads!eet
Surpac
Spreads!eet
Seam #7Ms$ mining limits.
RO/ para"eters+
dilution+ recovery etc#
'aste mining euipment
and producti9ities.
oal mining euipment
and producti9ities.
'ash plant capacity$ yield.
7opography$ dump slopes$design gradients and &idths.
S&ell$ haulage profiles.
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Process 3 5e(ore /ineSc!ed
9isadvantaes of Spreadsheet System: ;o graphical 9alidation of results. Braphical representation of results time consuming and
tedious to generate. ;o automatic spatial precedence. ;o 4rd party support.
Advantaes of Spreadsheet System:
+lexibility
Ease of /se Easy integration &ith do&nstream systems
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Process 3 8it! /ineSc!ed
# Pit 9esin
2# enerate Reserves
Sc!edule 8aste /inin
?# Sc!edule Coal /inin
1# Coal 8as! and Production
*# Ra"p and 9u"p 9esin
7# /aterial 5alance
=# Co""unicate Plan
Surpac
Spreads!eet
Spreads!eet
Surpac
Spreads!eet
st stae /ineSc!ed i"ple"entation#
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Sc!edulin Inputs
# Pit 9esin 0Mining 2ocations1
2# 5lock /odel 0ROM model1 8aste :;uip"ent
?# /inin Se;uence
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Sc!edulin Outputs
". Reports: 8 oal Exposed Schedule 0Cualities18 'aste Mining Reports
%. Bantt hart
4. Animations
). EOP Surfaces
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Sc!edulin Outputs
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Sc!edulin Outputs
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4uture Opportunities
# Pit 9esin
2# Sc!edule 8aste /inin
Sc!edule Coal /inin
?# Coal 8as! and Production
1# Ra"p and 9u"p 9esin
*# /aterial 5alance
7# Co""unicate Plan
Surpac
/ineSc!ed
/ineSc!ed
Surpac
/ineSc!ed
/ineSc!ed 0ROM Model1
# Coal /inin+ 6as!in
and stockpiles#
2# /aterial 5alance