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1、摘要本设计是开采贾家沟煤矿04、10#煤层,本矿位于吕梁市离石区城北街道办事处沙麻沟村,行政区划属离石区管辖。该矿西部外有209国道通过,南距王家沟约3km,距离石区约7km,交通十分便利。煤层厚度分别为1.98m、5.96m,煤层间距为28m。据井田外围资料调查该井田为低瓦斯矿井,4#煤层瓦斯涌出量平均为3.14m3/t。煤层均有爆炸危险性。煤的自燃倾向等级为Ⅲ级,不易自燃。根据矿井涌水量预测,该矿矿井4#煤层涌水量一般为80-160m3/h,矿井开拓延深开采10号煤时,涌水量会增大。开拓方案一:在东西走向,沿
2、井田边界线布置大巷,采用主、副斜井开拓方式,大巷布置采用集中布置。采用分区式回风。开拓方案二:在东西走向及南北走向沿井田边界线布置大巷,采用主斜井、副立井开拓方式,大巷布置采用集中布置。采用分区式回凤。方案一、二的工业广场都位于武家村附近。方案二巷道掘进工作量较方案一巷道掘进工作量大,工业场地也较大,所以选择方案一。开拓方案一中将整个井田划分为三个盘区,28个条带。矿井达产时的首采工作面位于一号盘区,该盘区划分为7个条带,工作面长度为200m,推进长度为2100m,回采工艺采用后退式、综采一次性采全高机械化采煤法
3、,采用“三八制”作业制度。采空区采用全部跨落法管理顶板。矿井通风采用抽出式通风,矿井总风量为65m3/s。困难时期和容易时期的风阻分别为1572、1960。通风机的型号为FBCDZ-8-NO22B,其风量范围为55-123m3/s,风压范围为756-2860。关键词:矿井开拓、采煤方法、综合机械AbstractiiThisdesignistheexploitationofcoalmine04,jiajiagou10#coal,themineislocatedinLishiDistrictNorthStreetof
4、ficesShaMaGouCun,LvliangCity,administrativedivisionisLishiDistrictjurisdiction.ThemineofWestRoad209,SouthfromWangjiagouabout3km,distancestoneareaofabout7km,thetrafficisveryconvenient.Coalseamthicknessarerespectively1.98M,5.96m,seamspacingof28m.AccordingtoIdaI
5、daforexternaldatatoinvestigatethelowgasmine,4#gasemissionwithanaverageof3.14m3/t.Dangerofexplosionofcoalseamare.CoalnaturaltendencyofgradeⅢ,noteasytospontaneouscombustion.Accordingtothepredictionofwateryieldofmine,themine4#coalseamwaterinflowingeneralfor80-16
6、0m3/h,theexploitationofcoalminedeepminingofNo.10coal,waterquantitywillincrease.Developmentplan:intheeast-west,alongtheboundarylinelayoutofroadway,theprincipal,deputyinclinedshaftdevelopmentmode,roadwaylayoutadoptscentralizedlayout.Thezonereturnair.Schemetwo:t
7、odevelopalongthemineroadwayboundaryarrangementineast-westandnorth-south,themaininclinedshaft,verticalshaftdevelopmentmode,roadwaylayoutadoptscentralizedlayout.Thepartitiontypebacktophoenix.SchemeoneortwoindustrialPlazaarelocatednearthevillagewu.Schemetworoadw
8、aydrivageworkloadisschemeoftunnelexcavationwork,industrialsiteislarge,sotheselectionscheme.Oneoftheminedevelopmentplanwillbedividedintothreezones,28bands.Thefirstlongwallmineproductionwhe