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1、Subject：ResearchonXiaoHonggouCoalMineWaterWeakeningParametersofTopCoalSpecialty：MiningEngineeringName：DaLihan(Signature)Instructor：DengGuangzhe(Signature)ABSTRACTInthispaper,takingXiaoHonggoucoalminingsteeplyinclinedcoalseamtopcoalsofteningengineeringprojectasthebac
2、kgroundandXiaoHonggoucoalminemaincoalminingB1,B2,B3,B4,B5,B6ascondition,itstudiesandsolvesthesteepthickseamsublevelcavingminingtopcoal’ssofteningprocessandparameters,andprovidesascientificbasisonthetopcoalsofteningproblemoffullymechanizedtopcoalcavingtechnologytothe
3、steepthickcoalseam.Thispaperusestheoreticalanalysis,experimentalresearch,numericalsimulationandfieldpracticeofcombiningresearchmethods,analysisingwateroncoalbodyweakeningandpressurewateroncoalbreakingmechanism.Usingtherationalwaterexperiment,itobtainsthemaincoal’smo
4、isturecontent,waterabsorption,softeningcoefficientandpermeabilitycoefficient;usingfuzzyclusteringanalysismodeltoanalysisofcoalseamwaterinfusionsofteningeffectfactors,itobtainstheB1,B3foreasywaterinjectioncoalseam,B2,B5,B6foreasywaterinjectioncoalseam,B4fordifficultw
5、aterinjectioncoalseam;usingnumericalsimulation,itobtainstheleveloftheinitialstressfield,thevariationlawofcoalseamwaterinjectionpressureandinjectionpressure,permeabilitytherelationshipbetweentheradiusandtheinjectiontime,determinestheinjectionholearrangement,waterinje
6、ctionparametersandreasonablelayout.ResearchresultshasbeenappliedtoXiaoHonggou+590B1+2and+568B3+6coalseamcomprehensivecavingworkingface,andsuccessfullyresolvedtheproblemofXiaoHonggoumineinclinedspecialthickseamsublevelcavingminingtopcoal’sweakening.Keywords：Steepincl
7、inedseam;Top-coal;Topcoalinjection;WeakeningmechanismThesis：ApplicationResearch目录目录1绪论................................................................................................................................11.1选题的背景和意义........................................
8、...........................................................11.2国内外研究现状....................................................................
