_煤水双资源型矿井开采技术方法与工程应用武强

421Vol．42No．120171JOUＲNALOFCHINACOALSOCIETYJan．2017、。19921995“”。20、、。2～27973、－、。、、、、、、。“”、。．“－”J．20174218－16．doi10．13225/j．cnki．jccs．2016．5032WuQiangShenJianjunWangYang．Miningtechniquesandengineeringapplicationfor“Coal-Water”dual-resourcesmineJ．JournalofChinaCoalSociety20174218－16．doi10．13225/j．cnki．jccs．2016．5032“－”1212121．1000832．100083、－、、、、“－”、、、、“－”。“”。54、55、65。TD823TD745A0253－9993201701－0008－092016－09－302016－11－09“”2016YFC080180141572222414303181959—。[e-mail]。1987—。[e-mail]421Vol．42No．120171JOUＲNALOFCHINACOALSOCIETYJan．2017Miningtechniquesandengineeringapplicationfor“Coal-Water”dual-resourcesmineWUQiang12SHENJian-jun12WANGYang121．ChinaUniversityofMining＆TechnologyBeijingBeijing100083China2．NationalEngineeringＲesearchCenterofCoalMineWaterHazardControl-lingBeijing100083ChinaAbstractDuetothereversedistributionofcoalandwaterresourcesinEasternChinaandWesternChinatheminingtechniquesandmethodswereproposedbasedontheconceptofminingfor“Coal-Water”dual-resourcesminewhichelaboratedoptimizationofminingmethodparametersandminingtechnologyoptimizationandcombinationofmultini-tyundergroundseparationdischargeofcleanwaterandsewageinterventionofhydrogeologicalconditionfillingmin-ingbasedonthespecificfilling-waterhydrogeologicalconditionsofmainmineablecoalseaminordertoaddresstheproblemofsecurityandgreendevelopmentoncoalresourcesthesupplyofwaterresourcesthesharpcontradictionsandconflictsbetweenecologicalbalanceandenvironmentalprotectionandrealizethetargetsoncontrollingandpro-tectingwaterinrushtheprotectionandutilizationofwaterresourcesandtheimprovementofecologicalenvironment．AcasestudyinXingyuancoalmineofYuxianminingareawascarriedoutandanalyzed．Theminingmethodforthecoalseamundertheunconsolidatedaquiferwiththinbedrockandthemechanicalmodelofclampedbeamwereestab-lishedandtheauthorpresentedthedesignmethodofcoalpillarbasedontheyieldingtheoryandamendedthecalcu-lationformulaofloadoverlyingcoalpillar．Theresultsshowthatthekeytotheyieldingpillardesignistheexistenceofmainkeystratumandformationofstableexpansionpressureandthestrataweightunderexpandingpressurearchwassupportedbytheyieldingpillarwithenoughstrength．Thesafetycoefficientislargerunderthefollowingthreecondi-tionsroom5mwhilepillar4mroom5mwhilepillar5mandroom6mwhilepillar5m．Keywordsdual-resourcesminecoalminingunderwater-containingoptimizationandcombinationofmultinitypres-surearchyieldingpillar《》201520141.53t《》20162015375.4t1。“”。、1－3。4①。②。③。、、。、、、、、5－8。、。、“”9－10、、“”、、“－”1112－13、920174214。“－”、、、、“”。1“－”“－”、、、。“－”1“”“”“”、、、。1“－”Fig.1Contentofminingtechniquesfor“Coal-Water”dual-resourcesmine22.1。6.3m300360400m7.0m450m15－16。、、、、、。、、17。、、。、。、、/。。“－”、。“－”2。2.2、、。1411、18011“－”2“－”Fig.2Mindmapforchoosingminingmethodbyusing“Threemaps-twopredictions”method。201271.7m32.0～4.0m320%～30%19。。《》2020、、95%80%75%。2015《》“”“、”。、、。1、、“”、、“”。“”①、。②。。③。2、、“”、、“”、。。①②、③④⑤⑥。3。23200m3/h5499m3/h、、、、、。“”“”。112017423Fig.3Minewatertreatmentandcomprehensiveutilization3、、、“”、、、、“”。“”、、。2.3。。pH、、。2.4①。、、②。。2.5/、、、、20－214。22－23。。4Fig.4Fillingminingtechniques。2013、、《》、、211“－”、。“”“”“－”。3“－”“－”。3.162°～5°3°2.5～3.0m10.25～0.78m。、、、。30～55m140～245m7.50～34.30m、11.746L/s·m5.832m/d1017.698m。HCO3－Ca－Mg0.5g/L。—。《、、》I6。。6“－”。3.2“”。“”5。5Fig.5Mechanicalmodelofclampedbeam5AhLqFsM。L=2h2σtqF槡1σtMPaF2～4。q=γh=0.69kg/cm2σt=0.9MPah=2.85mF=4“”7.28m5m6m。3.3。6640835～42m6m3m45m530m3/h13m3/h5m5m。。7。312017426Fig.6Minewaterburstinginduced-bypillarunstability7SydS.PengFig.7StressdistributionlawofdifferenttypesofcoalpillarSydS.Pengminorchangesinthefigure24－26。。27rp=Mβd2tanφln1+σzlctanφ()+d2Mtanφ2Mmβ0.25～0.40dd=1.5～3.0cMPaφ°σzlMPa。M=2.5～3.0mβ=0.3d=1.5c=2.5MPaφ=28°σzl=10MPa22.2～2.6m0。“”8。8“”Fig.8Archstressdistributionpatternofpillarisolatedbymined-outarea。、9。9Fig.9Mechanismofpressurearchandyieldpillar。“————”10。3①②③。411“－”10Fig.10PressurearchevolutionprocessduringminingF=σpσa3F1.3～5.01.5～2.0σpσa。H'=1fW02+h0tan45°－θ2()[]4f2W0100mh03.0mθ30°。25.9m。σa=1.1σv1－Ｒe=1.1γH'1－Ｒe5γ25kN/m3H'25.9mＲeＲe=Wo/Wo+WpWoWp、m。Obert－Duvallσp=σm0.778+0.222Wph1()6Bieniawski－Hairtonσp=σmW0.64ph0.3617σmσm=0.2357σcσcMPah1m。F1.3～2.0。。2JPB－30SGB－620/40T、DSJ－800。6408、6。1Table1SafetycoefficientofpillarＲeσa/MPaσp/MPa530.631.932.071.1540.561.622.211.4550.501.422.381.7630.672.162.071.0640.601.782.211.2650.551.582.381.541“－”、、、、、、2“－”“”“”“”、。3、、、、“－”。Ｒeferences1．、J．2014395795－805．WuQiang．Progressproblemsandprospectsofpreventionandcon-troltechnologyofminewaterandreutilizationinChinaJ．JournalofChinaCoalSociety2014395795－805．512017422．J．2013384561－565．WuQiangCuiFangpengZhaoSuqietal．TypeclassificationandmaincharacteristicsofminewaterdisastersJ．JournalofChinaCoalSociety2013384561－565．3ZengYWuQLiuSetal．Vulnerabilityassessmentofwaterburst-ingfromOrdovicianlimestoneintocoalminesofChinaJ．Environ-mentalEarthSciences2016751431．4．D．201227－40．5．J．2010354529－534．QianMinggao．OnsustainablecoalmininginChinaJ．JournalofChinaCoalSociety2010354529－534．6．J．20062311－5．QianMinggaoMiaoXiexingXuJialin．Greenminingofcoalre-sourcesharmonizingwithenvironmentJ．JournalofMining＆Safe-t