铀矿勘查钻孔岩心高光谱编录及三维矿物填图技术研究

综合阐述了钻孔岩心高光谱编录技术研究现状、系统构成及其矿化蚀变高光谱矿物识别与三维矿物填图等技术方法,重点分析了钻孔岩心高光谱编录技术实际应用效果与应用前景.     

数字式全景钻孔摄像在某洞室勘察中的应用

在地下洞室的勘察中。数字式全景钻孔摄像通过对钻孔孔壁的拍摄处理．给出了全孔的孔壁展开图和三维虚拟岩芯图，并对深层岩脉、节理．裂隙的产状和宽度进行量化的统计，为地下洞室的布置和岩石质量评价提供了翔实可靠的数据，通过工程实例阐述了数字式全景钻孔摄像技术在花岗岩地区地下洞室勘察中的应用。     

基于多测井参数的甘肃北山地区裂隙及破碎带识别

为了在甘肃北山地区选择高放废物处置库,需要研究该地区地层的裂隙及破碎带发育情况。采用核工业北京地质研究院研发的HD-4002综合测井仪,优选井径、声波时差和三侧向电阻率等测井参数,综合解释地层发育的裂隙及破碎情况。在裂隙及破碎层段,测井解释结果与钻孔岩心编录具有很好的对应关系,说明利用测井资料能较好地识别裂隙和破碎带,能为高放废物库的选址提供准确的技术支撑。     

地下水封石油洞库深部岩体二维裂隙网络模拟

低渗透性的裂隙岩体是地下水封石油洞库建库的最佳选择.为研究深部岩体的稳定性及裂隙渗流特征,对深部洞库区进行了二维裂隙网络模拟.通过深部钻孔裂隙统计和地表裂隙测量统计相结合的方法,得出了洞库区剖面二维裂隙网络图和线密度图.分析了运用钻孔成像结果获得深部裂隙统计参数的优点,并对模拟结果做了进一步分析,结果显示,模拟区主要发...     

岩心与坑道的工程地质研究

以往的地质勘探工作,着重研究的是矿体形态、质量、成因等,而对与将来开采有关的工程地质资料则重视不够,因而在开采前需补做工程钻探。建议今后从地表填图、钻孔岩心编录、岩心定向、坑道编录等方面加强工程地质资料的收集。     

渗入型铀矿床普查和评价中岩心的编录和取样方法

本文详细了渗入型铀矿床普查和评价中岩心编录和取样的规范及方法，岩心编录需按地工最终把编录结果反映在地层柱状图上，钻孔央专柱状图用比例尽１：１０００～１：２０００编制而矿化段柱状图则用比例尽１：５０编制。钻孔岩心取样方法主要包括岩心取样、粒度成分测定取样、岩性一地球化学取样、岩石物理性质测定取样及矿化取样等。每种取样均需按不同操作规程进行。     

南岭地区多金属矿NLSD-2孔综合地球物理测井研究

NLSD-2孔是在南岭东段于都赣县矿集区盘古山示范区部署的南岭地区第二口科学钻孔———金属异常验证孔,终孔深度2012.12m,全井段实施了连续取芯和综合地球物理测井作业,测井项目包括自然电位、自然伽马、电阻率、声波速度、密度、井径、井斜、井温、超声波成像、极化率、磁化率和井中三分量磁测等,原位获取了钻孔剖面的各种物理化学参数、钻孔几何形态及井壁图像。综合利用各种测井资料,并结合岩芯编录资料,对全井段岩性、金属矿化带和断裂破碎带进行了细致分析。结果表明,自然伽马、声波速度和密度测井对该钻孔的岩性响应明显,通过制作岩性识别交会图,可识别出钻孔剖面的主要岩性;该钻孔的多金属矿化主要有白钨矿化、黑钨矿化、黄铁矿化、闪锌矿化、辉钼矿化等,在测井图中表现为高极化率、低电阻率、磁异常垂直分量ΔZ及水平分量模差ΔH’异常的组合特征,据此能够有效地划分和评价矿化带;断裂破碎带的测井响应特征为井径扩大,电阻率、声波速度、密度减小,超声成像呈暗色条带,这些特征可作为找矿辅助标志。实践证明综合测井资料在深部找矿方面能够发挥重要的作用。     

云南普朗铜矿井孔测井资料综合应用

云南普朗铜矿的铜矿化体和矿体主要分布于普朗复式斑岩体内,存在复杂的多期发育。为了精细了解铜矿储层的地球物理响应特征、裂隙发育特征,为普朗铜矿的勘探和开采提供精细的矿体特征、裂隙发育及层位埋深等方面的信息,通过对普朗铜矿的钻孔测井数据采集和综合评价,结合钻孔编录、部分岩心样品资料,利用数学统计、三维交会图、卷积神经网络及裂隙参数计算等开展了普朗铜矿测井响应特征分析、岩性识别和裂隙特征分析的研究。研究区石英二长斑岩、石英闪长玢岩、角岩等三类主要岩石地层的测井响应特征表明,角岩地层的电阻率相对较高,石英闪长玢岩地层、石英二长斑岩地层的电阻率依次相对偏低,在裂隙发育层段或较为破碎的层段,电阻率降低明显。石英二长斑岩地层的充电率(极化率)相对较高,最高达10%。角岩地层的放射性强度相对较高,石英闪长玢岩地层、石英二长斑岩地层的放射性强度相对偏低。采用卷积神经网络对三类主要岩石地层进行测井岩性识别分析,准确率为97.94%。利用双侧向电阻率测井资料对地层裂隙进行判别,裂隙发育层段的电阻率会明显降低,且深侧向、浅侧向电阻率差异明显;在铜品位较高的石英二长斑岩地层,其电阻率相对偏低,高角度裂隙比较发育...     

利用压水试验构建裂隙网络系统的方法探讨--以溪洛渡水电站坝区玄武岩为例

利用钻孔常规压水试验（Lu值）资料，运用统计分析方法对Lu值大小的分级、分级频率的空间分布和随埋深的变化进行了量化分析，得出了不同级次的裂隙发育程度随埋深变化的规律，揭示了岩体裂隙发育规模、裂隙连通程度和不同级别的裂隙密度等特点；结合研究区地质构造与裂隙发育条件，提出了运用随机统计原理构建二维裂隙网络系统模式的方法；并结合中国西部溪洛渡水电站坝区玄武岩裂隙介质阐明了裂隙网络系统的构建方法与思路。     

河北省1∶50 000沙流河幅第四系钻孔数据库

河北省1∶50 000沙流河幅是京津冀平原地区地质调查的重点图幅之一,晚新生代地层是图幅的主要调查对象,第四系钻孔数据库是地质调查核心成果的体现。本次工作利用钻孔施工和测试成果数据,结合收集的钻孔资料,建立了第四系钻孔数据库,主要包括1个钻孔基本信息图层、5个钻孔编录数据库、5个钻孔设计数据库及5张钻孔柱状图。本文从数据来源、数据处理方法、数据属性结构及数据质量控制等方面进行了归纳总结,以呈现基于数字地质调查系统的第四系钻孔数据库成果和建库实例。本数据库为唐山地区城市三维地质模型的建立提供了基础数据,服务于京津冀协同发展,同时也为平原区地质调查中钻孔数据的处理及建库提供了参考。     

Définition d'une limite multicritère ; stratigraphie du passage Campanien–Maastrichtien du site géologique de Tercis (Landes,SW France)Definition of a multi-criteria boundary; stratigraphy of the Campanian–Maastrichtian interval of the geological site at Tercis (Landes,SW France)

Lithostratigraphy, physicochemical stratigraphy, biostratigraphy, and geochronology of the 77–70 Ma old series bracketing the Campanian–Maastrichtian boundary have been investigated by 70 experts. For the first time, direct relationships between macro- and microfossils have been established, as well as direct and indirect relationships between chemo-physical and biostratigraphical tools. A combination of criteria for selecting the boundary level, duration estimates, uncertainties on durations and on the location of biohorizons have been considered; new chronostratigraphic units are proposed. The geological site at Tercis is accepted by the Commission on Stratigraphy as the international reference for the stratigraphy of the studied interval. To cite this article: G.S. Odin, C. R. Geoscience 334 (2002) 409–414.     

Quaternary stresses revealed by calcite twinning inversion: insights from observations in the Savonnières underground quarry (eastern France)

Calcite samples were extracted both from the rock matrix and the superficial coating of a karstified fault plane of an underground quarry, located in the eastern border of the Paris basin. The karstification is dated as Quaternary. Analysis of mechanical calcite twinning reveals that only the calcite matrix has also undergone a compression trending WNW that can be attributed to the Mio-Pliocene alpine collision. Both coating and matrix have undergone a strike-slip regime with σ₁ roughly trending north–south, that could correspond to the regional present-day state of stress, a strike-slip compression rather trending NNW, modified by local phenomena. To cite this article: M. Rocher et al., C. R. Geoscience 335 (2003).     

HYDROGEOLOGY

正20141756 Chen Ruige(Mathematical College,China University of Geosciences,Beijing100083,China);Zhou Xun Numerical Simulation of Groundwater Level Fluctuation in a Coastal Confined Aquifer with Sloping Initial Groundwater Level Induced by the Tide(Geological Bulletin of China,ISSN1671-2552,CN11-4648/P,32(7),2013,p.1099-1104,6 illus.,16 refs.) Key words:confined water,groundwater level     

METAMORPHIC PETROLOGY

正20141408 Cai Jia(Institute of Geology,Chinese Academy of Geological Sciences,Beijing100037,China);Liu Fulai Petrogenesis and Metamorphic P-T Conditions of Garnet-Spinel-Biotitebearing Paragneiss in Danangou Area,Daqingshan-Wulashan Metamorphic Complex Belt(Acta Petrologica Sinica,ISSN1000-0569,CN11-1922/P,29(7),     

SERIALS

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GEOPHYSICAL EXPLORATION

正20142386An Guoying(China Aero Geophysical Survey and Remote Sensing Center for Land and Resources,Beijing 100083,China)Application of Satellite Remote Sensing in Regional Hydrogeological Investigation:Taking Cenozoic Strata in Wenquan Sheet(1∶250 000)of Karakoram Range as an Example(Geosci-     

QUATERNARY GEOLOGY & GEOMORPHOLOGY

正20141016An Chengbang(Key Laboratory of Western China’s Environmental Systems,Ministry of Education,Lanzhou University,Lanzhou 730000,China);Zhao Yongtao Lake Records during the Last Glacial Maximum from Xinjiang,NW China and Their Climatic Impli-     

PETROLEUM GEOLOGY

正20141538 Cao Qing(School of Earth Sciences and Engineering,Xi’an Petroleum University,Xi’an 710065,China);Zhao Jingzhou Characteristics and Significance of Fluid Inclusions from Majiagou Formation,Yichuan Huangling Area,Ordos Basin(Advances in Earth Science,ISSN1001-8166,CN62-1091/P,28(7),2013,p.819-828,7 illus.,3 tables,43 refs.)     

GEOCHEMISTRY

正20142002 Wei Hualing(Institute of Geophysical and Geochemical Exploration,Chinese Academy of Geological Sciences,Langfang065000,China);Zhou Guohua Element Content and Mineral Compositions in Different Sizes of Soil in Tongling Area,Anhui Province(Geological Bulletin of China,ISSN1671-2552,CN11-4648/P,32(11),2013,p.1861     

ENGINEERING GEOLOGY

正20141768 An Shaopeng(Institute of Rock and Soil Mechannics,Chinese Academy of Sciences,Wuhan 430071,China);Wei Lide Experimental Study on Mechanical Behavior of Xigeda Formation Siltstone and Structure Interface(Journal of Engineering Geology,ISSN1004-9665,CN11-3249/P,21(5),2013,p.702-708,9illus.,1 table,16 refs.)