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大采高液压支架初撑增压回路动态特性研究 Abstract: Thispaperstudiesthedynamiccharacteristicsoftheinitialsupportandpressureboostingcircuitofthehighmininghydraulicsupport.Throughexperimentalanalysisandtheoreticalcalculation,thedynamiccharacteristicsofthecircuitsystemareobtained.Theresultsshowthatthepressureboostingcircuitcaneffectivelyimprovetheinitialsupportperformanceandreducetheimpactofthesupportequipmentontheroofstrata,whichhasimportantreferencevalueforthedesignandoptimizationofhigh-mininghydraulicsupports. Introduction: Thehighmininghydraulicsupportisanimportantequipmentforminingcoalseamswithahighdegreeofmining.Theinitialsupportperformanceofthehydraulicsupportiscrucialforensuringthesafetyofminingoperations.Theinitialsupportfunctionofthehydraulicsupportistomaintainthestabilityoftheimmediateroofandpreventitfromcollapsingwhenthecoalseamismined.Thehydraulicsupportprovidesatemporarysupportforcefortheroof,whileallowingthecoalseamtocontinuetobemined.Thehydraulicsupportreliesonahydraulicsystemtoachievetheinitialsupportfunction.However,duetotheimpactoftheminingprocessandthegroundconditions,thehydraulicsystemwillproducecertaindynamiccharacteristics,whichwillaffectthestabilityofthehydraulicsupportandtheroofstability.Therefore,itisnecessarytostudythedynamiccharacteristicsofthehydraulicsupportsystemandtoproposemeasurestoimprovetheperformanceoftheinitialsupport. PressureBoostingCircuitDesign: Thepressureboostingcircuitisanimportantpartofthehydraulicsupportsystem,whichcansignificantlyimprovetheinitialsupportperformanceofthehydraulicsupport.Thepressureboostingcircuitiscomposedofapressureregulatingvalve,anaccumulator,andapressurereliefvalve.Thepressureregulatingvalveisusedtocontrolthepressureofthehydraulicsystem,andtheaccumulatorisusedtostorehydraulicenergy.Thepressurereliefvalveisusedtocontrolthepressureofthehydraulicsystemandtoensurethesafetyofthehydraulicsupport. ExperimentalAnalysis: Thedynamiccharacteristicsofthepressureboostingcircuitandtheinitialsupportsystemweretestedthroughexperiments.Theexp