特厚煤层大采高综采综放适应性评价和技术原理王国法

431Vol．43No．120181JOUＲNALOFCHINACOALSOCIETYJan．2018．J．201843133－42．doi10．13225/j．cnki．jccs．2017．4200WANGGuofaPANGYihui．Full－mechanizedcoalminingandcavingminingmethodevaluationandkeytechnologyforthickcoalseamJ．JournalofChinaCoalSociety201843133－42．doi10．13225/j．cnki．jccs．2017．42001211．1000132．1000133。、、“－”“”。2。、、。TD355A0253－9993201801－0033－102017－09－152017－12－062017YFC0603059732014CB046302U16102511960—。[e-mail]1985—。[e-mail]-mechanizedcoalminingandcavingminingmethodevaluationandkeytechnologyforthickcoalseamWANGGuofa12PANGYihui11．CoalMiningBranchChinaCoalＲesearchInstituteBeijing100013China2．CoalMiningandDesigningDepartmentTiandiScience＆TechnologyCo．Ltd．Beijing100013ChinaAbstractToovercomethetechnicalproblemsencounteredintheminingprocessatafullymechanizedminingfacewithlargeminingheightthispaperputsforwardthreescientificproblemsfacingfullymechanizedminingfacewithlargeminingheight．Basedonthetechnicalandeconomicanalysisofthickcoalseamminingmethodanadaptabilityevaluationindexsystemandevaluationmodelareestablished．Basedontheprincipleofstrengthcouplingrigiditycou-plingandstabilitycouplingbetweenhydraulicsupportandsurroundingrockacouplingdynamicmodelofhydraulicsupportandsurroundingrockanda“crackingslip”mechanicalmodelofcoalwallspallingarealsodeveloped．Inad-ditionthepaperputsforwarda“doublefactor”controlmethodfordeterminingreasonableworkingresistanceofthefullymechanizedhydraulicsupportwithalargeminingheight．Basedonthecontradictionbetweencavingandstabilitycontrolatafully－mechanizedtop-coalcavingfacewithalargeminingheightamethodofincreasingthehydraulicsupportsettingforceandimprovingthestructureofhydraulicsupportareputforwardtorelievethecontradictionbe-tweenthem．Thesafeefficientandhighrecoveryrateofthickcoalseamminingisrealizedbydevelopingthekeytech-nologyandequipmentforthickcoalseam．Keywordsthickcoalseamminingmethodevaluationmodelhydraulicsupportandsurroundingrockcouplingrela-201843tionshipworkingresistancecoalwallspalling3.5m6～20m45%～50%1－28.2m320m。、、4－7“－”8－10、11－13BPＲ14－166～8m17－1820m、。4m7m4m6m。、。1“”“”、、、。、“、”“、”、、、。。31。2、。32。2、、198.0m8.0m。6.0～8.0m、、。2.11。431、3、、、、、、。1Fig.1Thickcoalseamminingmethodadaptiveevaluationindicators、、、、、、3。AHPWi=∑ni=1cij∑nj=1∑ni=1cij1cijijcij＞0cij=cjici=j=1Wi。10。2.233Ci=Wij·μ11μ12…μ1jμ21μ22…μ2jμi1μi2…μij2CiWijμijij∑nj=1μij=1n。3D=Wi·Bi3Bi。3U==＞9075～9060～75＜603T=D·UT4TUT。34、。、31。1、、3。1。532018431Table1Thickcoalseamminingmethodpriorityconditions1①3.5～5m55°②5～6m25°③6～9mf＞22①。9～20m15°f＞23.5～6m②。6～12mf＜22.5～3.5m320m3“”3、、“”“”。3.1“”、、、、、、2。2“”Fig.2Hydraulicsupportandsurroundingrockcouplingrelationship、。、。、“－－－”。6313.21“”。16～8m“+”20m“”3。3Fig.3Thickcoalseamlongwallminingworkingfaceoverburdenfracturestructure、UDEC。、4。ADAMS。2－2、4Fig.4Hydraulicsupportandsurroundingrockcouplingdynamicalmodel5。5Fig.5Hydraulicsupportsupportingintensitybasedonhydraulicsupportandsurroundingrockcouplingdynamicalmodel2。“－”6。“－”、、20cb2＜6F1δ21－3aM()+F3a23M－a2M2aM－1()[]σt5F4l=F3h+Fd－Fzf1cosα－sinα－mgsinαcosα6732018436“－”Fig.6Coalwall“tensionfracture-glidereflection”mechanicalmodelcbF1δyMF3aF4lF3hFdFzf1αm。。2－2、7。3“”7Fig.7Hydraulicsupportcriticalribsupporting“－”8。8Fig.8Hydraulicsupportworkingresistancecalculationprocessforhighcuttingface“－”“”831。4313、9a。、、219b。9Fig.9Fullymechanizedcavingfacestopcoalcavingstructureandribspallingmodelω=ω1－ω2－ω37ω1=∫M0Qmyy224EI4My－6M2－y2dy8ω2=∫b/2－b/2X2∫b/2－b/2XQ'dxdx2EIdx9ω3=∫Mm'Q'gyy224EI4My－6M2－y2dy10ωω1Qmyω2Q'dxQzxω3Q'gyIMm'。、。2、。10。311。。3。“－”12。58.2m9320184310Fig.10Influenceoffull-mechanizedcoalminingsupportstyletocoalwallandtopcoaldestruction113Fig.11Strongdisturbancethree-greadtop-coalcavinginstitutions。113。2。。、Q890Q11501412Fig.12Influenceofhydraulicsupportsettingloadtocoalwallandtopcoaldestruction13Fig.13Anti-impactdoubletelescopiccolumnwithcapacity-increaseandbufferingfunction15%。620m6m。304114Fig.14Multi-layerandmulti-passweldingtechnology315。153Fig.15Two-columncoverstypefullyhydraulicsupportwiththree-greatcoalcavinginstitution“”16、、。16Fig.16Hydraulicsupportandsurroundingrockintelligentcouplingcontrolsystem、ＲBF。719m9～20m20m。2—“”。3、、。4。8.2～8.3m2.05m。Ｒeferences1．J．201328192－103．GAOTianmingSHENLeiLIULitaoetal．TheinequalityofChina’scoalresourcesanditsflowpathsJ．JournalofNaturalＲesources201328192－103．2．“”J．20061831－5．TIANShangangSHANGGuanxiongTANGXin．Chinesecoalre-sourceoctothorpeshapeddistributingpatternJ．CoalGeologyofChina20061831－5．3．J．20164896－10．WANGGuofaPANGYihuiZHANGChuanchangetal．IntelligentlongwallminingtechnologyandequipmentandadaptabilityinsuperlargeminingheightworkingfaceJ．CoalEngineering20164896－10．4．J．201540130－34．WANGGuofaPANGYihui．ＲelationshipbetweenhydraulicsupportandsurroundingrockcouplinganditsapplicationJ．JournalofChi-naCoalSociety201540130－34．5．J．1420184320143981593－1601．WANGGuofa．Theorysystemofworkingfacesupportsystemandhy-draulicroofsupporttechnologyJ．JournalofChinaCoalSociety20143981593－1601．6．J．201341944－4890．WANGGuofa．Developmentoffully－mechanizedcoalminingtech-nologyandequipmentJ．CoalScienceandTechnology201341944－