搜索
论文题目：危机矿山接替资源勘查方法应用研究－以柞水银洞子银多金属矿床为例专业：矿产普查与勘探硕士生：程天赦(签名)指导教师：端木合顺朱华平(签名)摘要陕西柞水银洞子银多金属矿床为严重危机矿山，寻找接替资源成为当务之急。该矿床位于南秦岭造山带北缘被动陆缘断陷盆地—柞(水)山(阳)二级泥盆纪沉积盆地中，矿床就位于碳酸盐沉积建造向碎屑岩沉积建造过渡部位的热水沉积岩相中，属典型的海底热水喷流沉积矿床。矿床以Ag为主，并含有Cu、Pb、Zn等多金属，其中Ag储量达特大型，Cu、Pb、Zn综合储量达中型。矿体均产于大西沟组地层的第二段上部层位(即bdD1322−)，呈层状、似层状，层位稳定，受岩相控制明显。本文基于目前危机矿山接替资源勘查主要方法，首先系统综合分析了银洞子银多金属矿床地质、地球化学特征，明确了控矿因素；然后综合对比分析了目前主要的地球物理勘查技术，结合银洞子银多金属矿床地质特征和矿床类型，认为应用地面高精度磁测和可控源音频大地电磁测深(CSAMT)法作为该矿床深部勘查方法是合理的。通过地面高精度磁测和可控源音频大地电磁测深法，查明了矿床41~105勘探线之间深部磁异常(ΔT)和电阻率异常(ρ)分布，明确了深部找矿标志。配合深部勘查工程对异常进行了查证，控制了13、4、7、8号四个矿体，探获了一定的银铅铜资源量，表明这两种方法在银洞子矿床深部勘查中应用是行之有效的。根据可控源音频大地电磁测深数据和验证工程数据，运用Surpac矿山软件建立了深部电阻率异常层空间分布模型和深部矿体三维实体模型，并将这两个模型在同一坐标系统中进行拟合，其拟合程度很好，进一步说明可控源音频大地电磁测深法应用效果明显。本文研究成果对资源危机矿山的找矿和可持续发展具有指导和借鉴意义。关键词：危机矿山银洞子矿床地面高精度磁测CSAMT电阻率异常层Surpac三维模型研究类型：应用研究Subject：TheStudyOfMethodAppliedInExplorationForContinuedResourcesOfTheCrisisMines—TakingTheYinDongziAg-PolymetallicMineOfZhaShuiAsAnExampleSpecialty：MineralResourceProspectingandExplorationName：ChengTianshe(Signature)Instructor：DuanMuheshunZhuHuaping(Signature)ABSTRACTTheZhashuiYinDongziAg-polymetallicmineofShanxi,whichlocatesinZha(Shui)Shan(Yang)thesecond-levelsedimentarybasinoftheDevonianperiodofnorthpassiveepicontinentaledgeoftheNanQinlingorogenicbelt,isaseriouscrisismine,toseekcontinuedresourcesbecomesurgent.Itisthemodeloftheseabedhotwaterjetsedimentarymineraldeposit,whichislocatedatthecarbonatesedimentaryformationtotheclasticrocksedimentaryformationtransitionspothotwaterdepositlithicfacies.ThemineincludesAgprimarily,andalsoCu,Pb,Zn.Agreserveslarge-scale,Cu-Pb-Znreservesmedium-scale.AllorebodieslocateattheupsideofthesecondsectionoftheDaXigougroup,whicharecontrolledbylithicfaciesobviouslyandpresentlayeredandstable.Thisarticlereserchsethegeologyandgeochemistrybasingonthemainmethodstoanalyzetheoredeposit’scontrolledfactors.ThenitcomparesthemaingeophysicstechnologyandchoicestheGroundhigh-precisionmagneticsurveyandCSAMTaccordingtothegeologicalfeatureandtype.Bythesetwomethods,identifyingthespecialdistributionofΔTandρfrom41to105.Usingexplorationworkstocheckthedeepabnormalandcontrolthe13,4,7,8Orebodies,gatingcertainresources.Itshowsthesetwomethodsareeffective.UsingSurpactoestablishe3Dmodelofρandtheorebodies.Thetwomodelsarewellfittedinthesamecoordinatesystem,whichfurtherlyshowsthatit’seffecttouseCSAMT.Thispapercanbeguidanceandlearn.fortheprospectingandsustainabledevelopmentoftheresourcescrisismine.Keywords:Crisismine,YinDongZimine,Groundhigh-precisionmagneticsurvey,CSAMT,ρabnormallayer,Surpac3DmodelThesis：ApplicationResearch目录I目录1前言.........................................................................................................................................11.1选题依据和意义..............................................................................................................11.2本文的研究内容及要解决的问题..................................................................................21.3完成本文所做的实际工作..............................................................................................31.3.1野外地质考察...........................................................................................................31.3.2坑道地质编录与素描...............................................................................................31.3.3取样化验工作...........................................................................................................31.3.4物探原始数据记录和相关数据计算.......................................................................31.3.5电法勘探模型的建立...............................................................................................41.3.6Surpac矿山软件矿体三维模型建立........................................................................41.4论文取得的主要成果......................................................................................................42危机矿山接替资源勘查方法................................................................................................52.1危机矿山的基本概念及现状..........................................................................................52.2危机矿山接替资源勘查方法..........................................................................................62.2.1危机矿山接替资源勘查方法概况...........................................................................62.2.2矿床成矿规律研究与深边部矿体勘查...................................................................72.2.3矿床地球化学研究与深边部矿体勘查...................................................................82.2.4地球物理勘查技术与深部矿体勘查.......................................................................83银洞子银多金属矿床深部勘查方法应用效果..................................................................123.1矿床地质特征................................................................................................................123.1.1赋矿地层.................................................................................................................123.1.2构造特征.................................................................................................................133.1.3主要矿体特征..................................................................