Case Study Application of MineSched MineSched at Sebuku Sebuku
April 2007
Introduction Straits Asia Resources: Resources:
Part of the Straits group of companies.
Recently listed on Singapore Stock Exchange
Operates Sebuku oal Mine in South !alimantan
Objectives of Objectives of this Presentation: ". #escribe the the geology$ geology$ conditions conditions and mining methods methods at Sebuku %. #iscuss the implementation implementation of MineSched MineSched and ho& it is used in planning and Scheduling at Sebuku
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
Pulau Sebuku
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.
Production Coal Production
3ncreasing production$ resources and reser9es. Resource con9ertible upon land use redesignation.
Resources and Reserves
Hi! volatile bitu"inous coal#
As!$ Sulp!ur$ Calori(ic )alue$ .otal /oisture$
%#&' 0#7' *+&00 ,ad1'
eoloy 3 Cross Section
4ault
eoloy
7anah Putih pit is located in fresh&ater s&: 2o&er
than high tide le9el 58%6m o9erlying mud
Pit Li"it
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.
# /inin /et!od 3 5und /anrove S6a"p
Peri"eter 5und
2# /inin /et!od 3 /ud
/ud Cell
5und
/ud 4ace
&# /inin /et!od 8aste /ud /inin$ 9ier positioned on !ard (loor and pulls "ud do6n#
:;uip"ent PC210 e
H9?*1 trucks 0<45 operating units1
?# /inin /et!od Coal :;uip"ent PC?00 e
8as! 5ypass 3 Hi! As! 5ypass 3 Lo6 As!
/inin /et!od Pit 9e6aterin Settlin Pond and Li"in
Su"p and Pu"ps
/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
/ine Plannin Stratey Pit
di9ided into Strips 0*6m1 and locks 0up to )66m1
Open
up pit along the strike
7erraced
mine faced exposing different seams.
Main
access road and ramps to pit 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.
/ine Plannin Stratey /ud cells constructed 6ell back (ro" "ine (ace to "ini"ise risk o( (ailure#
Strip /ud
a" @pper Se
Strip B
Strip
/ud Cell
*6m
O5 9u"p
ter burden In " a e S Lo 6er
.oe o( du"p o((set (ro" "ine (ace to assist 6ater "anae"ent#
Processin and S!ippin Coal /inin
RO/ S>P
8as! Plant
5P Crus!er
=56>
=56>
Port S>P
5are Loader
/ine Plannin and eoloy 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.
eoloical /odel
/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
Process 3 5e(ore /ineSc!ed [email protected] Seam #7Ms$ mining limits.
# Pit 9esin
RO/ para"eters+ dilution+ recovery etc#
2# enerate Reserves
Spreads!eet
'aste mining euipment and producti9ities.
&# Sc!edule 8aste /inin
Spreads!eet
oal mining euipment and producti9ities.
?# Sc!edule Coal /inin
Spreads!eet
'ash plant capacity$ yield.
1# Coal 8as! and Production
Spreads!eet
7opography$ dump slopes$ design gradients and &idths.
*# Ra"p and 9u"p 9esin
S&ell$ haulage profiles.
7# /aterial 5alance
=# Co""unicate Plan
Surpac
Surpac
Spreads!eet
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
Process 3 8it! /ineSc!ed # Pit 9esin
Surpac
2# enerate Reserves
st stae /ineSc!ed i"ple"entation# &# Sc!edule 8aste /inin
?# Sc!edule Coal /inin
Spreads!eet
1# Coal 8as! and Production
Spreads!eet
*# Ra"p and 9u"p 9esin
7# /aterial 5alance
=# Co""unicate Plan
Surpac
Spreads!eet
Sc!edulin Inputs # 2# &# ?#
Pit 9esin 0Mining 2ocations1 5lock /odel 0ROM model1 8aste :;uip"ent /inin Se;uence
Sc!edulin Outputs ". Reports:
8 oal Exposed Schedule 0Cualities1 8 'aste Mining Reports
%. Bantt hart 4. Animations ). EOP Surfaces
Sc!edulin Outputs
Sc!edulin Outputs
4uture Opportunities # Pit 9esin
Surpac
2# Sc!edule 8aste /inin
/ineSc!ed
&# Sc!edule Coal /inin
/ineSc!ed
0ROM Model1
# Coal /inin+ 6as!in and stockpiles# ?# Coal 8as! and Production
1# Ra"p and 9u"p 9esin
*# /aterial 5alance
7# Co""unicate Plan
/ineSc!ed
Surpac
/ineSc!ed
2# /aterial 5alance
