版權(quán)說明：本文檔由用戶提供并上傳，收益歸屬內(nèi)容提供方，若內(nèi)容存在侵權(quán)，請進行舉報或認(rèn)領(lǐng)
文檔簡介
SUBLEVELCAVINGCONTENTSSLCDESIGNCONCEPTSDRAWTHEORYSLCDESIGNLAYOUTDEBATEDesignrulesDrawiskingCriticalissuestobeansweredbeforegeotechnicaldesign:
-Howmuchdevelopmentforhowmuchrecovery? -Howmuchsupportforhowmuchrecovery? -SLC/blockcavetonnagecut-off? -SLCsustainingdevelopmentrateforreqtonnage? -hardorsoftcavingenvironment?1000msoftcavegeotechnicalcut-offInter-activedrawbecomesharderatdepthRecoveryharderatdepthWastegradebecomebetteratdepth(muckpilesalting)Norightorwrong,justprobabilitiesofsucessSLCBALANCECONCEPTSupportDrawBlastingProductionDrawtheoryHowthebrokengroundisdrawn/flowsDrawpointspacing’storeducedilution/increaserecoveryStillnotwellunderstoodPhysicalmodels/bunkers-Kvapli&Jenike1960’sMathematic/numericalplasticflow–Pariseau1960’sFullscalemarkertests–Kvapli,Just&Janelid1960’sPhysicalmodelsLaubscher,Tayloretc-1970-1980’sKvapilcurvesrevisited/Laubscher-Bull&2000ICS2001-presentPhysicalmodelsPFCRingmarkertrialsYENGE1980“theflowofcavedorecannotbedescribedsatisfactorybytheoriesdevelopedfortheflowofothergranularmaterialssuchassandpowderandserialgrains“DrawtheoryBestwehavegottodayWewillneversolvematerialvariabilityWemaygetcloserDesign’smustbetemperwith
-Commonsense -ExperienceTwodesigntheories
-kvapil -LaubscherFlowofmaterialBasicdrawtheoryEllipsoidareasEliposideformationMainpointsTwozones -DRAWOREXTRACTION
ellipsoid(MATERIALREMOVED) -Limitellipsoid(materialmovement/loosens)
Drawzone -Koperzoneincenter -shearzoneatthesidesPoints: -materialmovesfasterincentre -Finermaterialslimmerdrawzone -coarsermaterialwidedrawzone -drawzonewidthrelatedtomaterial/drawpointsizeSLCDesignClassificationMRMRbased2classes:Softcaves<class3Hardcaves>class3SUPPORTDESIGNSLCDESIGNLayoutsbasedondrawandblastingreqAbovereqdrawpointsclosetogetherWiderdrawpointsViolatesthelayoutstressrulesOperationaldepthlimitsoftcavesGreatersupportHardcavesbrowinstabilitySUSTAININGDEVELOPLEMENTDesignLayoutsbasedondrawKvapliLaubscherDrawinteractionSublevelheightDrawpointspacingFlatwidedrawpointsbacksLowerdriftheightsSublevelheigth: -Development -DrillingaccuracyDraw-interactionFLATBACKSLowdriftheight/ringangleKvapilLayoutdesignonbins/observationsprecisedeterminationofspacingCorrectionwithextractionelipsoid/IDZAppliescorrectionsfordriftbackprofile/oreUsesgraphsandformulaDeterminesSublevelheightDriftspacingDiggingdepth/burdencorrectionofsimmingofellipsoidforheigthKvapilDriftwidth,determinedfromgroundconditions
-MRMRclass4max4.5m(better3.8m) -MRMRClass3>max6.0mApplydriftcorrectionDeterminesublevelheigthDeterminewidthofextractionellipsoidDeterminedepthofextractionellipsoidDeterminedriftcenterspacingDriftcorrectionEllipsoidwidthDigwidthCavegradingKvapligradings110%extractionClass1,80%(ore)<30%wasteClass2,75%(ore)<35%wasteClass3,65%(ore(<45%wasteReferas70/30or60/40Dilutionentryabout40%materialdrawnRemarksOldsystemExactnumberCloserspacingHasbeenchallengedICSmaysuggestthatthismaynotbewrongCloserdrawpointspacingGradingoftypesofdrawReductionofdrawpointsizewithdrawheigth18mthecut-offLaubscherBin&observationsShabanieIsolateddrawzonediameterconceptIDZ=LimitellipsoidIncreasedinteraction/spacingduetoaboveDrawpointspacing=IDZxinteractionfactorLaubscherbinsDrawpointwidthsDilutionentrygraphsDilutionentrygraphLaubscherIDZconceptInteractionfactor?NodirectuseMainblockcavingRequiresskillUsefragmentationsizeRangeofdrawpointspacingsMissingdataBullandPage2000,SLCdesignrationaleNewmodelofbehaviorOldbintheorylayoutscausedmethodproblemsEmbracedYenge’sstatementExcessivedilution&lowrecoveryAboveledtoSLCbeingunpopularRecentevidenceshowedbetterrecoveriesDrawbehaviorwassimilartoblockcavingLayoutswerebasedonLaubscherviewAdvancedtheconceptofIsolated/interactivedraw14.5mdrawpointspacingRecoveryimprovements: -moreinteractivelayouts -StrictapplicationofdrawstandardsInteractive/isolateddrawDrawstandardsBullRulesorcommandments
-Alignmentoffaces(3-5faces) -Uniformdrawofblastedmaterial -Goodblastingstandards -Goodroadways/support -Bogacrossfullwidthofface
DrawstandardsBullRulesorcommandments
-Alignmentoffaces(3-5faces) -Uniformdrawofblastedmaterial -Goodblastingstandards -Goodroadways/support -Bogacrossfullwidthofface
DrawstandardsBullRulesorcommandments
-Alignmentoffaces(3-5faces) -Uniformdrawofblastedmaterial -Goodblastingstandards -Goodroadways/support -BogacrossfullwidthoffaceCumulativedilutiion15-24%(40%)Metalrecoveries90-100%Dilutionentrypoint50%(20%)
Bull&pageChallengedDoesnotworkCriticsisunfairDesignphilosophyissuesDowedesignmine’swithhumansystemerrorGreyarearegardingthe14.5mdrawpoint(Massmin200546Fig8):
-8mto10mapartinteractivedraw -10mto18mgrayarea(nocommentdegreasingeffectiveness) -18misolateddrawconditionsInteractionofinteractionfactorsnotclearSLCClassificationMRMRbased2classes:Softcaves<class3Hardcaves>class3SUPPORTDESIGNSLCClassificationMRMRbased2classes:Softcaves<class3Hardcaves>class3SUPPORTDESIGNDRAWPOINTSPACINGDS=IDZxINTERACTIONFACTORInteractionfactorsRangefrom1.2to1.6Blockcavesnomuckpileconfinement=1.5Recentlayouts4caves(25m)Dilution30%extraction76to98%Class4Drawpoints4.5to6mwideSpacingbetween11to14.5m85to98%extraction=IFof1.2to1.376to85%extraction=1.3to1.514.5m=1.613.5=1.5Bull&page>12mdrawpointspacing?Questions: -whatinteractionfactorused? -howsensitivetodrawcontrolstandard? -Probabilityofachievingtheabove?(30%) -Gainscomparedtoisolateddrawlayout -recovery/dilution,sustaindev.CAPEXNotwrongProbabilistic/riskforrecoveryGoodanswersnotopinionrequired13mlayoutspacing=recoveryvsCAPEXfordevINCO/STOBIEIsolateddrawsituation200225mx25mlayoutsHustruid/LKABlargesublevelsbadfordilutionReducecostswidelyspaceddrawpointsandsublevelsIsthisbadNoInsitugradeoftheringCut-offofshut-offgradeDrawinteractionisasecondaryissueMuckpilesaltingovertimeWhattoyoucalldilutionCONFUSED?DifferenceapproachesNotwrongHowdowedesignasublevelcave?WhatapproachshouldbeusedApproacheconomicnotgeotechnicalUselayoutthatgivesbestreturnIssues: -projectcapital/sustainingdevvsrecovery -Canyoudeveloplayoutforinteraction -Greyareapossiblebyrisky -sizeofcavevsSustainsubleveldev11mton/yrcave26kmsdev/yr15mx15mlayout11mton/yrcave16kmdev/yr18mx30mlayoutWillpillarsbestableatdepthWaste/dilutionWhatiswaste?RockLowgradeoreHighgradeorenotrecoveredMaterialoutsidetheringprofileSaltingincreaseswithdepthDrawenvironment
ore+wasteWastecapWastesaltedwithorefromaboveSLC
wasteheavilysaltedwithoresaltingClassicSLCdrawtheoryIsolateddraw&bull/page
isolateddrawButcher
溫馨提示
- 1. 本站所有資源如無特殊說明，都需要本地電腦安裝OFFICE2007和PDF閱讀器。圖紙軟件為CAD,CAXA,PROE,UG,SolidWorks等.壓縮文件請下載最新的WinRAR軟件解壓。
- 2. 本站的文檔不包含任何第三方提供的附件圖紙等，如果需要附件，請聯(lián)系上傳者。文件的所有權(quán)益歸上傳用戶所有。
- 3. 本站RAR壓縮包中若帶圖紙，網(wǎng)頁內(nèi)容里面會有圖紙預(yù)覽，若沒有圖紙預(yù)覽就沒有圖紙。
- 4. 未經(jīng)權(quán)益所有人同意不得將文件中的內(nèi)容挪作商業(yè)或盈利用途。
- 5. 人人文庫網(wǎng)僅提供信息存儲空間，僅對用戶上傳內(nèi)容的表現(xiàn)方式做保護處理，對用戶上傳分享的文檔內(nèi)容本身不做任何修改或編輯，并不能對任何下載內(nèi)容負(fù)責(zé)。
- 6. 下載文件中如有侵權(quán)或不適當(dāng)內(nèi)容，請與我們聯(lián)系，我們立即糾正。
- 7. 本站不保證下載資源的準(zhǔn)確性、安全性和完整性, 同時也不承擔(dān)用戶因使用這些下載資源對自己和他人造成任何形式的傷害或損失。
最新文檔
- 流水施工課程設(shè)計
- 2024年文化藝術(shù)品交易牌照出租及鑒定服務(wù)合同3篇
- 幼兒課程設(shè)計與組織
- 塑形課程設(shè)計分享
- 2024年民事離婚合同范本：財產(chǎn)分配及債務(wù)處理一
- 2024年海洋工程設(shè)備采購與系統(tǒng)集成服務(wù)合同2篇
- 2024-2025學(xué)年人教部編版九年級上語文寒假作業(yè)（四）
- 2024-2025學(xué)年魯教新版九年級(上)化學(xué)寒假作業(yè)(二)
- 石油 工業(yè)基礎(chǔ)課程設(shè)計
- 2024年版住宅小區(qū)用地租賃協(xié)議
- 統(tǒng)編版（2024版）七年級上冊歷史：期末復(fù)習(xí)課件
- 國開（陜西）2024年《中國制造之高端裝備》形考作業(yè)1-4答案
- 工會新聞寫作培訓(xùn)課題
- 醫(yī)療行業(yè)銷售內(nèi)勤工作匯報
- 統(tǒng)計年報和定報培訓(xùn)
- 浙江省杭州市西湖區(qū)2023-2024學(xué)年九年級上學(xué)期期末考試語文試卷+
- 物流行業(yè)物流供應(yīng)鏈金融服務(wù)方案
- 兼職客服簽約合同范例
- 浙江省杭州市2023-2024學(xué)年高二上學(xué)期期末學(xué)業(yè)水平測試政治試題 含解析
- 【初中地理】《世界的聚落》課件-2024-2025學(xué)年湘教版地理七年級上冊
- 2鍋爐爐膛內(nèi)腳手架搭設(shè)及拆除施工方案
評論
0/150
提交評論