92023年第4期中国非金属矿工业导刊总第160期【矿产资源】江油地区雷口坡组白云岩特征及综合利用王超(四川省地质矿产勘查开发局川西北地质队，四川绵阳621010)【摘要】江油地区三叠系雷口坡组白云岩分布广泛，主要在含增镇—大康镇一带和二郎庙—雁门镇一带两个片区出露，是优质玻璃用、熔剂用原料，目前该区白云岩开发用途较为单一，资源利用效率较低。本文研究了雷口坡组白云岩地质特征及物理力学性质等，探讨了各类用途可行性。岩石中CaO含量为30.16%～48.56%，MgO含量为6.82%～22.42%，SO3含量为0.17%～1.07%，饱和抗压强度为30.18～111.3MPa，坚固性为0.1%～6%，压碎指标值为8%～19%，矿石碱集料反应14d膨胀率为0.016%。可满足耐火材料用、熔剂用、冶镁用、水泥用、玻璃用、制肥用及建筑石料用等多种用途要求。【关键词】江油地区；雷口坡组白云岩；地质特征；物理力学性质；综合利用【中图分类号】TD873.4；TD985【文献标识码】A【文章编号】1007-9386(2023)04-0009-04CharacteristicsandComprehensiveUtilizationofDolomitefromLeikoupoFormationinJiangyouWANGChao(NorthwestSichuanGeologicalTeamofSichuanBureauofGeology&MineralResources,Mianyang621010,China)Abstract:ThedolomiteoftheLeikoupoformationoftheTriassicsystemintheJiangyouareaiswidelydistributed,mainlyexposedintheareasofHanzeng-DakangandErlangmiao-Yanmen.Itisatraditionalhigh-qualityglassandsolventmaterial,withrelativelysingleutilizationandlowresourceutilizationefficiency.BystudyingthegeologicalcharacteristicsandphysicalmechanicalpropertiesofthedolomiteintheLeikoupoformation,thefeasibilityofvarioususesisexplored.TheCaOcontentintherockrangesfrom30.16%to48.56%,MgOcontentrangesfrom6.82%to22.42%,SO3contentrangesfrom0.17%to1.07%.Anditssaturatedcompressivestrengthrangesfrom30.18MPato111.3MPa,thefirmnessrangesfrom0.1%to6%,thecrushingindexvaluerangesfrom8%to19%,andthe14dayexpansionrateoftheorealkaliaggregatereactionis0.016%.Itcanmeetvarioususagerequirementssuchasrefractorymaterials,solvents,magnesiumsmelting,cement,glass,fertilizer,andbuildingstones.Keywords:Jiangyouregion;Leikoupoformationdolomite;geologicalcharacteristics;physicalmechanicalproperties;comprehensiveutilization江油地区雷口...
