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摘要I摘要随着矿井机械化程度的不断提高，煤矿尘害问题日趋突出。矿井粉尘不仅污染井下工作场所，危害矿工身体健康，而且能加速机械的磨损，在一定的条件下发生爆炸，酿成重大灾害。因此，制定有效的防尘、降尘措施对煤矿安全具有重大意义。其中，采用降低工作面回采时煤尘产生量的最根本、最有效的主动防尘手段－综采工面煤层注水防尘技术，能很好地帮助解决这一问题。本文针对永煤集团陈四楼煤矿回采工作面粉尘浓度一直居高不下的实际情况，开展综采工作面进行煤层注水防尘技术试验研究。首先在研究煤层注水机理的基础上，对影响煤层注水效果的因素进行分析；然后现场取煤样在实验室试验，对二2煤层注水相关基础参数进行测试与分析，为注水水样的选取提供依据；再此基础上，对煤层注水方式、注水设备、注水关键工艺及参数进行优化设计，分别在综采工作面开展了气动高压注水、脉动高压注水和静压注水的煤层注水工业性试验，并对注水效果进行考察，根据现场实测效果，经比较后，确定合理的煤层注水方案；最后形成适宜陈四楼煤矿的煤层注水技术。关键词：综采工作面；煤层注水；静压注水；动压注水AbstractIIIAbstractWiththeimprovementofthemechanizationonthefullymechanizedminingface，theproblemofcoaldustarebecomingmoreprominent.Minedustpollutestheworkplaceofundergroundandendangersthehealthofminers,alsoacceleratesthewearandtearofmachineandcauseexplosionincertainconditions.Therefore,itissignificationforminesafetythatweshouldmakeeffectivemeasuresfordustandreduction.Amongthem,itwouldbeveryhelpfultosolvethisproblembyusingtheseamwaterinjectiontechnologyfordustinfullymechanizedminingface,becauseitisthemostfundamentalandeffectivemethodstoreducedustgenerationduringminingface.Inthispaper,therealityisthatthedustconcentrationhasbeenactuallyhighinminingfaceofChenSiLoumineofYongMeiGroup,wedecidetostudyonseamwaterinjectiontechnologyfordustinfullymechanizedminingfacetosolvethisproblem.Firstly,weanalysisthefactorsofaffectingtheeffectofseamwaterinjectionthatbasedonthestudyofmechanismofseamwaterinjection.Then,takingcoalsamplesandtestingitinthelaboratory.Testingandanglicizingthebasicparametersof二2coalseaminjectiontoprovidethebasisfortheselectionofwatersamples.Onthisbasis,wemakeaoptimizationfortheseamwaterinjectionmethod、injectionequipment、thekeyinjectiontechnologyandparameters,thenthepneumatichigh-pressurewaterinjection、pulsehighwaterinjectionandstaticpressureinjectionarecarriedoutinfullymechanizedminingface.Theeffectofseamwaterinjectionisinspected,andaccordingtotheresultsoffieldmeasurement,aftercomparisontodetermineareasonableseamwaterinjectionprogram.Finally,theseamwaterinjectiontechnologythatsuitableforChenSiLoumineisachieved.Keywords:full-mechanizedminingface;coalseamwaterinjection;staticwaterinjection;dynamicpressurewaterinjection目录V目录摘要...................................................................................................................................I目录................................................................................................................................Ⅴ1绪论...............................................................................................................................11.1研究的背景和意义............................................................................................11.2国内外研究现状................................................................................................21.2.1综采工作面防尘研究现状和发展趋势....................................................................21.2.2煤层注水研究现状和发展趋势................................................................................41.3本文研究的内容及技术研究路线....................................................................81.3.1研究内容.....................................................................................................................81.3.2研究方法及技术路线................................................................................................92煤层注水降尘机理及影响因素分析........................................................................112.1煤层注水机理..................................................................................................112.2影响煤层注水效果的因素..............................................................................122.2.1煤的裂隙和孔隙的发育程度..................................................................................122.2.2上覆岩层压力及支承压力......................................................................................132.2.3液体性质的影响......................................................................................................132.2.4煤层内的瓦斯压力..................................................................................................132.2.5注水参数..................................................................................................................133陈四楼煤矿煤层注水相关基础参数测定.................................................................153.1煤样及矿井取水..............................................................................................153.2煤样原始水分的测定......................................................................................153.2.1测试原理..................................................................................................................153.2.2测定方法与步骤......................................................................................................153.2.3测试设备..................................................................................................................163.2.4测定结果及分析......................................................................................................173.3煤样吸水性的测定..........................................................................................17河南理工大学工程硕士论文VI3.3.1测试原理............