司家营铁矿境界优化与地表约束的影响-分析

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1、万方数据东北大学硕士学位论文AbstractBoundaryoptimizationoftheSijiayingironmineandtheinfluenceofthesurfaceconstraintsAbstractIntheprocessofopenpitmining，thedeterminationofultimateboundaryinproductionofthemineplaysaveryimportantposition．Theultimateboundaryisanimportantlinkinopenminingdesigna

2、ndanimportantbasisinopenmineproductiondecision．Whendeterminingtheultimateboundaryneedscomprehensiveconsideringvariousfactors，suchasminingresourcereservesandore-bodyoccurrencecondition，miningtechnicalcondition，themarketpriceoftheminerals，oreproductioncostandSOonavarietyofcompl

3、icatedfactorsinfluencingtheminingdesignscheme．Andthesefactorshavedirectimpactonmininginvestmentandproductionefficiency,SOthehi曲efficientandpracticaldesignmethods，optimizethefinalstateisminingenterprisesinevitablechoice．Thisthesispresentsamethodforultimateboundaryoptimization-

4、"movingconeelimination”．Thisalgorithmforopen-pitmetalminebasedonablockmodeloforegradeandstripratio．Inthismethod，alargestpossiblepitisfirstgeneratedand，then，startingfromthispitaniteratingconescanningprocessisusedtoeliminatethenon—profitconesorconeswithstripratiosgreaterthanthe

5、break—evenstripratio．Theoptimumpitisobtainedwhennosuchconescanbefoundinaroundofscanning，Intheprocessofexclusion，mustensurethatnoviolationslopeangleofgeometricconstraint，namely,aftereachpartofarealmruledoutfromresiduallevelofhelpslopeangleisnotgreaterthanthegivenfinalslopeangl

6、e．Thealgorithmcaneasilyhandledifferentdirectionandareahasdifferentslopeangle，throughcombineconicalshellvertexinplacedinthecenterofthelowestlevelofeachgradeoforeblockmodelmodule，CanbeRerhandletheconeoverlapoftheadverseimpactoftheoptimizationresults．Basedonthisoptimizationmetho

7、d，thisthesisdefinesthelargestgeometricboundarydelineating，methodofthestructureofthecone，movingconeeliminationideaandalgorithm．ThisthesistakesSijiayingironmineasanexample，usingthemovingconeeliminationandrelevanttheoreticalknowledgewhichresearchanddevelopmentbyProfessorWangQing

8、．．V．万方数据东北大学硕士学位论文AbstractWhenstartaultimateBoundaryoptimization，wen