maptek forge sept 09

8/13/2019 Maptek Forge Sept 09

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NEWSLETTER SEPTEMBER 09

> In this issueUnderground scanning with I-SiteMine planning for underground goldServices deliver MineSuite data on time

Vulcan removes barriers to research

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DEEP DRIFTSCANNING

A project to establish a DeepUnderground Science andEngineering Lab (DUSEL) inthe former Homestake gold

mine in Lead, South Dakota,is beneting from Maptek technology and expertise.

DUSEL will support the undergroundresearch needs of major scientic studiesin particle and nuclear physics, geology,hydrology, geo-engineering, biology andbiochemistry. The dedicated access anddiverse geology at Homestake are wellsuited for studies at extreme depth.

Maptek was contracted to collect

data in support of the preliminarydesign and planning of the laboratory. The drift was mined in 1920; nogeological mapping was available forthe detailed modelling necessary.

Maptek scanned the Kirk and Oro driftsat the 300 level to allow mapping ofthe geology. Narrow connes meantthat Maptek I-Site Technical ServicesManager Scott Schiele used the Z+F5006i Imager with an M-cam cameraattachment for very close range captureof data from drift and rock outcrops.

Field work over 2 days in April 2009provided scanning and photographicdata for the 1400 ft of interest. Scanningfrom 70 setups, with 28 photographsat each location, ensured adequatecoverage of the underground structures.

Issues requiring resolution includedaccess, backsighting and registration,appropriate lighting for photography,and managing the massive volumeof data to produce useful results.

The Z+F scanner, with a fast acquisitionrate and short minimum range, collected8 million points in 1 min 4 sec, producinga 40 MB le on medium resolution. Onhigh resolution 40 million points werecollected in 3 min 20 sec for a 180 MB le.

It took about 5 minutes to automaticallycapture the 28 images post-scan, whichwere then accurately mapped onto thescan data.

When you add 70 scans and 1960photographs to 70 control points,the result is 8 GB of data.

Lighting challenges were overcome bytrial and error. Manually pointing a 24 voltsource at the photographic area requiredthe scanner motion to be followed closely.When the narrow connes meant thatthe scanner and light source were veryclose to the surface been photographed,new lighting options were developed.

Some lights gave a yellow tint, whichaffected interpretation of the truenature of the geology. An array oflights mounted on a wagon at a lowervantage point than the camera causedshadowing. Manoeuvring both wagonand scanner in the drift was not easy.

Now youve got all this data...

Scans and associated photographs wereimported into I-Site Studio and registeredinto the coordinate system. Scans werecut into 100 ft sections and modelled,creating photo-rendered triangulations thatcould be used for mapping the geology.

The 28 photographs for each scan wereused to map the colour data onto thescan, and one 360-degree photographwas produced for use when importing thedata into I-Site Studio.

IT IS ANTICIPATED THAT

MAPTEK SERVICES MIGHT BENEEDED THROUGHOUT

THE PRELIMINARY ANDFINAL DESIGN PHASES OF

THE PROJECT, AS WELL ASDURING CONSTRUCTION.

Dr Zbigniew J. HladyszSouth Dakota School of Mines

W I N 1 O F 5 C A S H P R I Z E S S I M P L Y B Y T E L L I N G U S W H A T Y O U T H I N K A B O U T F O R G E .T A K E T H E S U R V E Y :w w w .m a p t e k .c o m / f o r g e


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CONTINUED>

The rst step in registration was tomanually rotate scans around theorigin of the scanner and apply globalregistration. Scans were then automatically

rotated to a more accurate positionusing I-Site Studios matching featuresoption, which picks common featuresin scans with overlapping data.

Once the data was in the correctcoordinate system, unnecessaryobjects scanner, pipes, wagon andpeople could be ltered out. Scansof the drifts were cut in half down thecentreline, making it easier to removeunwanted points from the middle of eachsection to better view the geology.

Modelling could then begin...

A minimum separation of 0.8 ft wasapplied to reduce 8 million points to150,000. Triangulations were mergedand fused with the 100-foot sectionsto create one continuous surface.

The photographs were then renderedonto this surface, matching the pointsfrom the scans to the imagery.

The model was then imported into

Maptek Vulcan software. Vulcan bringstogether the 3D photo-rendered model,old geology maps, drillholes and othergeological data into the one environmentfor advanced geotechnical analysis.

I-Site Studio is the most advancedsoftware for processing, managingand modelling the point cloud dataacquired from laser scanning.

While the 64-bit processing power ofI-Site Studio proved equal to the task ofhandling the massive datasets from theDUSEL project, some enhancementswere needed to ensure usable results.

One innovation is a new option toallow the viewing and manipulation ofmedium resolution scans; this providesa manageable le size, while retainingthe high resolution data for detailed

analysis of specic areas of interest. This streamlined the le load and zoomfunctions without losing any detailfor in-depth geological analysis.

LASER SCANNERS PROVIDETHE REQUIRED COVERAGE

AND RESOLUTION FORUNDERGROUND AND SURFACESCANNING. MAPTEK PROVIDESTHE BEST INTEGRATION OFTHE SCANNED DATA WITH 3DCAD GEOTECHNICAL TOOLS.

MAPTEKFORGE

SEPT09

LASER SCANNING SERVICESWHEN YOU NEED THEM Maptek I-Site Services Manager, Scott Schiele manoeuvred the scanner and wagon in theconnes of the Homestake drifts.

Thanks to Dr Zbigniew J. HladyszSouth Dakota School of Mines

The DUSEL project is funded bythe National Science Foundation.Construction on the two deepest labsis planned to start by 2012.

Homestake is the deepest minein North America with rooms at8000 ft (2438 m). It is well-suited forexperiments requiring extremely lowcosmogenic backgrounds.

The Yates Formation has wellcharacterised strong rock that cansupport deep, large cavities to hostvery large detectors for proton decayand neutrinos from different natural

sources. Geoscientists and engineerswill be able to research the behaviourof subsurface rock, minerals, waterand energy sources.

DUSEL BACKGROUND


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S E P T 0 9

YAMANA GOESFOR GOLDFazenda Brasileiro, anunderground gold mine

belonging to Yamana GoldInc., has been using Maptek Vulcan software since 1997.

The mine is situated in the Barrocasmunicipality, Bahia, about 200 kmfrom Salvador, Brazil. Currently, all thegeological modelling and mine plans forexcavation are carried out with Vulcan.

Once the indicated resource has beendened, access ramps are designedusing development tools in Vulcansunderground menu, with a 5.0 m x 5.5 mdrive dimension and 15% gradient.

The inclination of the ramp follows thedirection of the orebody, and maintainsa 15 m buffer distance from the hostrock. Where the geometry of theorebody undulates, the ramp designcan be adjusted easily to suit equipmentspecications and the dimension of drives.

Resource denition is carried out byinterpreting mineralised contacts withinthe orebody. The access ramp to the

cross-cuts is designed in a longitudinaldirection, so that when it intersects theorebody, development mining will be moreproductive, mining ore instead of waste.

Sub-levels are developed every 15 muntil the ore drives are established tocommence production mining, whichinvolves drilling and blasting.

The orebody is very irregular anddiscontinuous, often described as largescale pockets. The mining method usessub-level stoping between ore drives.

The mine is intensely mechanised,applying international best practiceoperational and work safety standards

to underground mining. Work at the mineis scheduled in 3 shifts of 8 hours a day,7 days a week, and 360 days a year, withuninterrupted changeover.

Drilling on the declines and cross-cuts isaccomplished with twin-boom jumbo rigs.

ANFO explosive is detonated by a non-electrical retardation system. All drilling isplanned using Vulcans Ring Design tools,allowing fast projection and plotting, andproviding a report with all the informationnecessary for its execution. Drilling inthe stopes is carried out in fan patterns,designed in Vulcan.

Mucking out the drawpoint andtransporting the material to the shaft iscarried out by 10 t LHDs and articulatedoff-road 30 t trucks. In the stopes, theLHDs are operated by remote control. Thetransported material is hoisted up to thesurface via the shaft. The shaft is 5.5 min diameter and 400 m deep. There aretwo 13 t skips, with cable guidelines and1000 HP frictional tow-car.

Re-evaluation of the mining parametersand procedure is undertaken alongsidedrill & blast and extraction. The dilutionand recovery data is calculated bycomparing what was designed againstwhat was accomplished; information isobtained from the wireframe shapes. Aretrospective analysis of the projects in

Vulcan aims to establish parameters forreconciliation.

Using Vulcan in the Fazenda Brasileirooperation simplies the processes ofindicated resource calculation, minedesign, and drill & blast design. The fastand accurate methods allow the FazendaBrasileiro team more time to spend onanalysing their plans.

Thanks to Fabio Ferreira de Oliveira Mine Planning

Yamana Gold 01 Stope development with extraction drive02 Long section view of decline with ore passes03 Typical drill & blast plan04 Production shaft 05 Mined stopes

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MAPTEKMINESUITESERVICESMaptek was able to deliverurgently required data fromits MineSuite productioninformation system to meetdeadlines for BHP Billiton.

A BHP Billiton Manganese BusinessIntelligence initiative was investigatinghaul cycle and time usage shift datafor their GEMCO Business Unit, onremote Groote Eylandt off the coastof the Northern Territory, Australia.

There was a tight deadline on gettinga standard dataset back to the South

African based development team.

GEMCO has been using MineSuite forproduction recording and reporting

for 7 years. Because some key staffwere on leave, GEMCO called Maptekto help meet their deadlines.

Maptek technical services staff were ableto connect remotely to MineSuite, exportthe data and report information about thehaul cycle within hours.

The time usage analysis took a little longer. All the requested data was available inMineSuites historical tables, and Maptekdelivered the required information within2 days.

MineSuites comprehensive productionrecording model and open approachto gathering and providing informationacross the value chain, ensured thatGEMCO captured the data they needed.

A client focus attitude meant that Maptektechnical services staff could makethis information available to GEMCO,under unforeseen circumstances.

Thanks toGEMCO

Delivery of accurate usable data>

Backup for site personnel>

30 years experience in mining>

Global pool of skilled technical staff >

SERVICES ADVANTAGE

PROFESSIONAL SERVICES WHENYOU NEED THEM

Ruggedportablefast.

Drive your operational performanceand protability further! [email protected] arrange a demo.

MAPTEK SAVED US 3 DAYSIN SCANNING THE PIT ANDROM PAD. WE COULDNT HAVEDONE THIS WITHOUT THE I-SITESCANNER AND ROOF MOUNT.

www.maptek.com

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MAPTEKFORGE

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Designs can be easily updated to takeinto account upgraded cost or geologicaldata. Evaluation of multiple designs fromDOT and PUNO can aid in decisions onthe mining method, cut-off grade selection,and optimisation of scheduling.

DOT and PUNO work particularly wellin the Vulcan environment. Specically,barrier les to avoid the orebody, faults andold workings, can be generated readilyusing Vulcan functionality.

The team has added special featuresenabling the operator to adjust part ofthe design, keeping the rest xed. Thisis helpful when the search space is verylarge, e.g. if there are many variable

junctions in the network, or if the barriersare especially complex. The Vulcanenvironment enables the operator toquickly assess which parts of the networkneed additional optimisation or guidance tomove away from barriers.

Thanks to Dr Marcus Brazil, Dr Peter Grossman, Professor Doreen Thomas & Professor Hyam Rubinstein(Melbourne University, Australia); Emeritus Professor

David Lee (University of South Australia); & Professor NickWormald (University of Waterloo, Canada), and to the

PRIMO sponsors for support of the project.

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ACCESSOPTIMISATIONFOR MINE

PLANNINGGood mine planning isfundamental to maximisingthe value of a mine. A networkdesign team from 3 universitieshas been developing accessoptimisation software for morethan 10 years, based on newmathematical algorithms.

Vulcan is used to visualisecomplex orebodies and createbarrier les.

The access optimisation software

has been proven by case studies>

facilitates minimisation of both>development and haulage costs

enables cost savings of up to 10%>over the life of the mine

The team developed DOT (DeclineOptimisation Tool), allowing a miningengineer to design an optimal network ofdeclines, satisfying mine constraints andoperational requirements while minimisingdevelopment and haulage costs.

A related software product, PUNO (PlanarUnderground Network Optimiser), designsan optimal layout of level development thatminimises the haulage and developmentcosts for ore extraction on each level. It isalso able to manage the requirements ofdifferent mining methods.

Traditional decline design for mine accessand haulage relied on the engineersexperience and skill. Often only 1 or 2options were tested in order to limit thedetailed repetitive work. Moreover, theemphasis was on minimising developmentcosts rather than the combination ofdevelopment and haulage over the life ofthe mine.

The new software tools allow an engineerto quickly and effectively test multiple

options to determine the optimal declineand level layout designs, thus minimisingthe nal combination of development andhaulage costs.

DECLINE OPTIMISATION TOOLDOT aids mine planning engineers todesign a near-optimal network of navigabledeclines in an underground mine, servicinga given set of access and haulage pointsassociated with an orebody.

DOT nds a network of decline paths1avoiding user-specied no-go regions.

DOT takes into account operational2constraints such as gradient, turningcircle, straight sections at junctions.

DOT will also determine near-optimal3locations for breakouts of subsidiarydeclines in the network, given thenetwork topology.

DOT can automatically select the4best choice of breakout points, wheremultiple options are available.

DOT returns centreline strings of5the optimal decline, and a summaryreport showing selected points withdevelopment and haulage costs.

PLANAR UG NETWORK OPTIMISERPUNO connects access point(s) ona crosscut or decline to a network oframps and tunnels for level development.Specied points on the stopes areconnected to footwall or hanging walldrives and vent raises, with subsidiaryventilation networks, as required by themining method.

As with DOT, PUNO constructs a leastcost network, taking into accountdevelopment and haulage costs. PUNOproduces a convenient template for minedesigners to add details such as loadingand passing bays.

PUNO can be given a selection of1access points from the cross-cutsor on declines. It will then generate adesign for each such access point.

Running DOT and PUNO in2conjunction, the total cost of leveldevelopment and network of declinescan be computed for a range ofaccess points. Additional savings canbe found by approaching the ore zonefrom different directions.

DOT AND PUNO HAVE BEEN PROVEN BY FIELD-TESTINGFOR LOCAL AND INTERNATIONAL MINING COMPANIES....

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Recent PRIMO case study, showing DOT forthe decline and PUNO for the level layouts

Part of the AMIRA project, PRIMOseeks to integrate optimal stope design,infrastructure design and schedulingfor underground mines. The DOTand PUNO tools have been furtherdeveloped as part of this project.


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NEW CUSTOMERS VULCANLEIGHTON CONTRACTORS haspurchased Vulcan for the Duralie open cutcoal mine near Gloucester, New SouthWales. Vulcan will be used for geologicalmodelling, mine design, drill & blast designand survey.

ORO SILVER RESOURCES LTD, located in Vancouver, British Columbia,purchased Vulcan GeoStatModellerto develop their sites in Mexico. Sistercompany, ORO GOLD RESOURCESLTD, purchased Vulcan Enviewer andOpen Pit MineModeller to further developopen pit opportunities.

MITSUBISHI DEVELOPMENT PL has purchased Vulcan for reviewing jointventure operations, as well as for training

staff in Tokyo, Japan, in visualisationcapability. Mitsubishi has thermal coal,iron ore and uranium interests.

RODEO CREEK GOLD, a whollyowned subsidiary of Great Basin Gold,has purchased Vulcan for its Hollister Minein Nevada. Rodeo Creek will use Vulcanfor production resource modelling andreporting.

VALE AUSTRALIA PTY LTD hasacquired coal assets in Australia to

strengthen its global business. Vulcan isbeing used for projects in Mackay and theBroadlea mine in Queensland.

VENTUREX RESOURCES LIMITED is renting Vulcan GeoModeller for modellingand resource evaluation of the EvelynProspect in the Pilbara Region of Western

Australia.

I-SITEBARRICK GOLD CORPORATION- PUEBLO VIEJO PROJECT, in theDominican Republic, has purchased anI-Site 4400LR scanner, a mobile vehiclemount and a second I-Site Studio licence.Barrick will use the I-Site system for end ofmonth surveys and extraction volumes asthe Pueblo Viejo Mine nears production.

BHP BILLITON MITSUBISHI ALLIANCE [BMA] has purchased anI-Site 4400LR laser scanner and vehiclemount system for the Gregory-Crinummine near Emerald in Queensland. Themain applications will be end of monthsurvey and stockpile reconciliation, aswell as geological highwall mapping.

MCARTHUR RIVER MINING, whichproduces a single grade bulk zinc-lead-silver concentrate for global markets, haspurchased an I-Site 4400LR laser scanner

for surveying stockpiles and end of monthpickups in the open pit. MRM is whollyowned by Xstrata plc, and is located900 km southeast of Darwin in AustraliasNorthern Territory.

OZ MINERALS has purchased an I-Site4400LR laser scanner and vehicle mountsystem for the new Prominent Hill copper-gold mine in northern South Australia.

The main applications for I-Site will be pit,ROM and stockpile surveys. The mine wascommissioned in February 2009, with rst

sales of concentrate in April 2009.

QUARRY TECH INC. , in New Brunfels, Texas, has purchased I-Site Studiosoftware for processing laser scan datafor stockpile volume measurement.

Maptek Forge newsletter is published quarterly. You can receive it by mail,emailed pdf or emailed link to the Maptek website.

Email [email protected] to subscribe or advise changes to contact details. Articles may be reproduced with acknowledgement.

2009 Maptek

Maptek, Vulcan, I-Site, and MineSuite are registered and unregisteredtrademarks of Maptek Pty Ltd; Maptek Computacin Chile Ltda; MaptekComputacin Chile Ltda, Sucursal Per; Maptek S de RL de CV; MaptekInformtica do Brasil Ltda; and KRJA Systems, Inc. Registered marksare registered in one or more of the following countries: Australia, Brazil,Canada, Chile, Greece, Mexico, Peru, Russia, Spain, UK and USA.

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September 21-24Exposibram 2009Belo Horizonte, Minas Gerais, Brazil

October 6-9 APCOM Vancouver, BC, Canada

October 14-17

Mining Indonesia 2009Jakarta, IndonesiaBooth 5511, Australian Pavilion

October 28-31 XXVIII Convencin Internacional de MineraWorld Trade Center, Veracruz, MexicoStands 634 and 653

November 10-11 Austmine Adelaide, South Australia

November 18-20Mine Haulage ConferenceBrisbane, Queensland, AustraliaBooth and technical presentation

February 8-10 SPAR 2010 - Houston, Texas, USA

February 21-24 SME - Phoenix, Arizona, USA

March 7-10 PDAC, Toronto, Ontario, Canada

VISIT THE MAPTEK BOOTH

2010

Maptek staff at the Australian Institute of MineSurveyors Conference in Perth, August 2009www. maptek .com

maptek forge sept 09

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