双鸭山铁矿北区采矿方法研究

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1、thereisallurgentneedtofindasafeandhishefficientminingmethodaccordingtogeologicalfeaturesofdeposk，existenceoforebodyandminingconditionstoachievethe”fourlowandonehilsh”(10wloss，lowdilution，lowcost，loweventhiddentroubleandm曲efficiency)goalofmining．Thispape

2、rsummarizesthegeologicalfeatures，charactersoforeandrocks，geologicalore．amounts，waterandengineeringgeologyandminingconditionsofthenorthregionofShuangyashanironmineindetail．Andweinvestigaterockmassstructuralplanes，determinepointloadstrengthandflowingparam

3、eterofloosebodyonsite，gradestabilityofrockmassaccordingtotheinvestigateddataofstructureplanesandthepointloadindex．Onthisbasis，itanalysesprocessofOrebodycavingandprincipleoflowdilutionandlosscavingaccordingtoinducedcavingtechniqueandOredrawingtheoryinsto

4、chasticflowing，SOastoputforwardvariousminingmethodstoadapttodifferentconditionsoforebody．ForthetlliCkorebody，QZJ-100Bdown-the—holedrillisusedforsinglesubleveldrillingtoinduceupperorebodydroppingnaturally，thusformingfloorpillarcavingminingmethodwithinduc

5、edcaving．ForthemediumthickOrebody,usinglowdilutionandlosssublevelcaving．Forthethinorebody，usingcombinationmethodofopenstopeandcavingwhenstabilityofsurroundingrockisbetter；usingoriginalmethod(short-holeshrinkagemethod)andboltsupportwhenstabilityofsurroun

6、dingrockisworse．Inthispaperthemethodofshotcreterockboltmeshinpreparationroadway,whichensurestheeffectiveimplementationofnewminingmethods，isalsostudied．Theseminingmethodsandsupporttechnique，whicharefRforthismine，arebeingimplementedatpresent．Theapplicatio

7、nofthesetechniqueswilleffectivelyimprovestopeproductionandsafetyproductioncondition．IIIrLj东北大学硕士学位论文Abs‘。ac‘一———————————————————————————————————————一Keywords：Stabilityofrockmass，Floorpillarcavingminingmethodwithinducedcaving，Lowdilutionand10sssublevelca

8、ving，Combinationmethodofopenstopeandcaving，Oredrawingforeavingmethod，Stopeandroadwaysupport·IV—t一'●、，k‘lq东北大学硕士学位论文独创性声明⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯．I摘要⋯⋯⋯⋯⋯⋯⋯⋯⋯．．⋯⋯⋯⋯⋯⋯⋯．⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯．⋯⋯⋯⋯⋯⋯⋯．．IIABSTRACT⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯