FuzzyevaluationongeologicalconditionsofcoalseaminChinaZhangDongsheng,ZhangXianchenYanXuefengChinaUniversityofMiningTechnology,Xuzhou,激angsu,P.R.ChinaDszhang123@263AbstractThegeologicalconditionsofcoalseamareevaluatedquantitativelybyusingfuzzymethodandfrompointviewofcoalmining.Accordingtotheevaluationresults,decision-makingonminingtechniques,miningprogramminganddesign,productionmanagementcanbecarriedouteffectively.ThelatestdevelopmentsinChinaareintroduced.Theevaluationcontents,thestructureandindexsystemofevaluationfactors,themembershipfunctionsandweightsofevaluationfactor,evaluationmodelandreliabilityarestatedindetail.Theeffectiveapplicationoffuzzyevaluationinthepredictionofcoalfaceoutputisintroducedemphatically.Fuzzyevaluationongeologicalconditionsofcoalseamisthebasicworkthatensuresaminerunefficiently,safelyandsteadily.Keywords:Fuzzyevaluation;geologicalconditions;evaluation1INTRDUCTIONToexploitthecoalresourcerationallymeansthattheminingtechnicallevelandtherelevanttechnicaldecisionsaresuitableforthecharacteristicanddifferenceofcoalgeologicalconditions.Iftheevaluationisfarbeloworabovetheactualgeologicalconditions,itisunfavorabletomakethemostofthecoalnaturalsuperiorityandeasytomakefalsetechnicaldecisions.So,itisveryimportanttoimproveminingeffectsandeconomicbenefitsthatthegeologicalconditionsareevaluatedappropriatelyandthecorrespondingmeasuresaretaken.2CONTENTSOFFUZZYEVALUATIONBasedonthecoalminingexperienceandrulessummarizedbywidelyinvestigation,theevaluationongeologicalconditionsofcoalseamshouldbetakenbynotonlystudyingtheinfluenceofmainfactorstotheselectionofcoalminingtechnologyandminingeffects,butalsoconstructingacomprehensivesupportedbyNationalNaturalScienceFoundationofChina（NSFC）()，NSFCforextinguishedscholars()evaluationmodelwithmulti-levelsandmulti-factorsbytheuseofminingtheory,fuzzymathematicsandAnalyticHierarchyProcess(calledAHPforshort),etc.Inaddition,theevaluationreliabilityshouldbeconsideredintheapplicationofevaluationresults.So,thecompletecontentsoffuzzyevaluationshouldinclude:(1)Investigatingtheexperienceandmaterialofgeologicalconditions,coalminingtechnology,technicaleffects,andsafetystateoffaceextractionintypicalminingdistrict.(2)Determiningthestructureofevaluationfactorsandtheindexsystemofgeologicalfactors,themembershipfunctionsandtheweightsofevaluationfactors,andestablishingthefuzzyevaluationmodelbysummarizingtheinfluenceofgeologicalfactorstocoal---本文于网络，仅供参考，勿照抄，如有侵权请联系删除---miningtechnologyandusingthemethodsoffuzzymathematics,etc.K(3)Dividingthecoalseamintomanysmallerblocksij(iiscoalseamnumber,jisblocknumber.)Kijaccordingtogeologicalreports,andmakingpre-miningevaluationoftheblockstogetthepre-miningevaluationvaluePij.K(4)MakingthesecondevaluationoftypicalblocksijhavingbeenminedtogettheevaluationvaluePPijPijaccordingtothegeologicalreportandsupplementarygeologicalmaterialaftermining,ismoresuitabletopractice.R=P''(5)Analyzingthereliabilityofpre-miningevaluation,P'(Risreliabilityindexofthepre-miningevaluationK),R≤1.(6)Makingevaluationontheblocks,basedonthePij'andtheRij,theevaluationvalueoftheblocksis:P0=P'×Ri(7)Modifyingtheevaluationmodelormakinganewevaluationaccordingtoitsapplicationandactualrequirement.3STRUCTUREANDINDEXSYSTEMOFEVALUATIONFACTORSThestructureofevaluationfactorsreflectstheconnotationofevaluati...