采煤面上行開采的漏風(fēng)規(guī)律研究.pdf

1、麟鼷要料技蟲肇位論文黲豫璧羹鬻—===：=j芏!=：=二=!!￡10L—————————————————————————————————————————————————————一_：曼壁!!!竺塑塑!些韭211生!型!些鯉!鰱!一Upward—Mining——————————————上熊≯：籬嘉濺警攥Subj∞t：Re∞arelaontheairLeakageofGobUndertheConditionofUpwardMiRiugSoe

2、eialty：SafetyEngineeringl、lnme：LiuXiaozlaou(Signature)Instructor：匭硇WenHu(Signature)‰弛。拍州’ABSTRACTTheUpwardMiningbeganatthe1970sinsideandoutside，thistechnologyisusedmaturelyinthedesignofthecoal，theleCOllSIrl磷Ollofthecoala

3、ndtheexploitationinoldmine，ithas掣dnedenormouseconomicalbenefitButtheresearch013ventilatingundertheconditionofupwardminingisstillatthebeginninginside齜doutsideandtherein110researelaOnventilatingundertheconditionofupwardmin

4、in呂43up03faceisOnthetopof4303gobanditisinthemiddleof4303goberannytlaere讎manyclfltnniesbetween43up03and4303gobIn4303gobthegasstacngthishighsowhenthewindpressureisdistributedirrationallythegasmaywelledupfiomthefaceandthisi

5、sdangerBecauseoftheCl“dnniesbetween43up03and4303gobtheremusthavesettledchannelsforwindThechannelsforwindcanprovidoxygentothegobthismaycausethecoalspontaneouscombustionandthisisnotsafefortheexploitationof43up03Firstlyduri

6、ngthedrivingandtheexploitationweuse$F6tofindoutthechannelsforwindSecondlybyusingtheonthespotobservationaldatafordatafittingwhichcanreaelatheequationsofoxygenconcentrationandpressuredistruibutionoftwoflanksinthegob，equati

7、onofgasdistributionofloosecoalwimventilationleakageinthegobequationofosmosiseoetfieientofdifferentdcpIh，influencefunctionofoxygenconsumptionwithdepthequationofairflowonbothsidesoftlaeworking&eandmathematicalmodelofdiffus

8、ionofairleakageinthegobandsetl|pforecastmodelThirdlyLasdybasedOntheobservationaldataandthreedimensionalmodelfor43up03and4303gob，byusingfluidcalculationsottwateFLUENTventilationleakageconditioninthegob啪benumericallysimula