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1、thereisallurgentneedtofindasafeandhishefficientminingmethodaccordingtogeologicalfeaturesofdeposk，existenceoforebodyandminingconditionstoachievethe”fourlowandonehilsh”(10wloss，lowdilution，lowcost，loweventhiddentroubleandm曲efficiency)goalofmining．Thispape
2、rsummarizesthegeologicalfeatures，charactersoforeandrocks，geologicalore．a(chǎn)mounts，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東北大學(xué)碩士學(xué)位論文Abs‘。ac‘一———————————————————————————————————————一Keywords：Stabilityofrockmass，F(xiàn)loorpillarcavingminingmethodwithinducedcaving，Lowdilutionand10sssublevelca
8、ving，Combinationmethodofopenstopeandcaving，Oredrawingforeavingmethod，Stopeandroadwaysupport·IV—t一'●、，k‘lq東北大學(xué)碩士學(xué)位論文獨(dú)創(chuàng)性聲明????????????????????????????????????．I摘要?????????．．???????．??????????????????．???????．．IIABSTRACT????????????
