共查询到20条相似文献，搜索用时 46 毫秒
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基于探矿者软件(Minexplorer)的三维地质建模及储量估算——以湘西北李梅铅锌矿为例 总被引：1，自引：0，他引：1
在全面收集地质资料的基础上,利用探矿者软件建立了湘西北李梅铅锌矿区的综合地质数据库,利用三维钻孔数据建立了研究区的三维矿床模型,并以矿体模型和地层模型为例,介绍了矿区三维地质建模的一般流程。在矿体模型的基础上,利用地质块段法、地质截面法、地质统计学方法进行了储量估算,并与矿山勘探报告中的储量估算结果进行了对比。研究结果表明,利用探矿者软件进行三维建模和储量估算,操作简便、可视化效果好,不同方法进行储量估算的结果互相印证,真实可靠。 相似文献
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依据河南省鲁山—宝丰韩梁地区铝土矿的地质特征,利用Surpac 6.3矿业软件建立了该矿区的地质数据库及地层、矿体、断层和地表模型,形象表达了矿区的地形地貌和矿体的产状及空间关系。推断出矿床形成的环境和成因,应用块体模型和距离幂次反比法对矿体的品位分布和资源量进行了动态估算,表明块体估算资源量的方法可靠准确,提高了储量估算的效率,为勘查工作提供了可靠的参考和科学依据。 相似文献
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三维矿产资源评价软件MICROMINE在金属矿山资源储量估算中的应用——以吉林舒兰季德钼矿为例 总被引：1，自引：0，他引：1
描述了吉林舒兰季德钼矿的矿床地质特征、水文地质、工程地质、环境地质条件及选矿试验结果。以该钼矿为例,系统讨论了三维矿产资源评价软件MICROMINE 11.03版的工作原理及流程,并对该矿床进行了资源量估算和验证。采用距离反比加权法进行资源储量估算,获得矿石量31374.14万t,钼金属量245096t,其中,111b+122b矿石量占总矿石储量的80.99%,钼金属量占总资源储量的81.08%;露天开采设计利用资源储量占总矿石储量的91.64%,钼金属量占总资源储量的91.99%。地质块段法和三角网多边形估算法检验结果表明,用三维矿产资源评价软件MICROMINE中距离反比加权法进行资源量估算,方法合理,相对误差较小,结果可靠。 相似文献
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固体矿产资源储量估算系统中垂直断面法的实现 总被引：2，自引：0，他引：2
首先简要介绍了固体矿产资源储量估算传统几何法-垂直断面法的基本原理,及运用该方法在储量估算系统中实现资源量自动化估算的流程。其次,通过夹石、特高品位、不平行剖面三个方面,说明了储量估算系统实现过程中需要考虑的各种常见的地质复杂情况,并参照国家标准及估算公式,提出了相应的自动化解决方案。最后,以辽宁省海城市福来屯铁矿矿区为例,以北京大学信息地质研究实验室(GSIS)开发的具有自主知识产权的Minesys矿产资源储量估算系统之传统方法估算子系统为平台,实现了垂直断面法自动估算矿石量,并与该矿区的详查报告进行了对比分析,讨论了估算误差的主要来源。 相似文献
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《矿产与地质》2019,(5)
SD法适应于不同矿种的矿产勘查和开采阶段。本次估算主要利用河南陡坡钼多金属矿区38个勘探钻孔共3839个单工程样品数据进行了钼储量估算和工程控制程度预测工作。结果显示陡坡矿区(331)+(332)+(333)资源储量已达中型(总矿石量为9463万吨,钼金属量为55 361t,钼平均品位为0.059%);并与传统垂直剖面法估算结果进行了对比,两者金属量误差为0.074%,显示SD法储量估算精度较高;同时利用SD法预测了矿区M-Ⅰ号主矿体工程控制程度,结果显示M-Ⅰ号矿体38个实际工程已使矿区勘查达到"控制的"地质可靠程度;如要达到"探明的"地质可靠程度,需在合适位置加密施工约32个钻探工程,说明SD法具有工程控制程度预测功能和进一步指导勘查工程布置的作用。 相似文献
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现有矿业软件的储量估算模块核心方法主要基于地质统计学。文章以河北迁安羊崖山铁矿床为例,通过3DMine软件在数据资料准备、变异函数确定、块体模型构建及储量报告等多方面的应用,规范了矿业软件在资源量估算方面的工作流程。利用普通克里金法和距离幂次反比法分别进行品位插值,完成资源量估算;并与传统储量估算结果进行比较,分析产生误差原因,建立了开采境界模型,计算了矿山开采储量和保有储量;利用赋值参数分析矿体控制程度,指导未来探矿工程重点部位。 相似文献
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Emily Keeble David I. Whiteside Michael J. Benton 《Proceedings of the Geologists' Association. Geologists' Association》2018,129(2):99-119
Pant-y-ffynnon Quarry in South Wales yielded a rich cache of fossils in the early 1950s, including articulated specimens of new species (the small sauropodomorph dinosaur Pantydraco caducus and the crocodylomorph Terrestrisuchus gracilis), but no substantial study of the wider fauna of the Pant-y-ffynnon fissure systems has been published. Here, our overview of existing specimens, a few described but mostly undescribed, as well as freshly processed material, provides a comprehensive picture of the Pant-y-ffynnon palaeo-island of the Late Triassic. This was an island with a relatively impoverished fauna dominated by small clevosaurs (rhynchocephalians), including a new species, Clevosaurus cambrica, described here from a partially articulated specimen and isolated bones. The new species has a dental morphology that is intermediate between the Late Triassic Clevosaurus hudsoni, from Cromhall Quarry to the east, and the younger C. convallis from Pant Quarry to the west, suggesting adaptive radiation of clevosaurs in the palaeo-archipelago. The larger reptiles on the palaeo-island do not exceed 1.5?m in length, including a small carnivorous crocodylomorph, Terrestrisuchus, and a possible example of insular dwarfism in the basal dinosaur Pantydraco. 相似文献
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The effect of water on accessory phase solubility in subaluminous and peralkaline granitic melts 总被引：4，自引：0，他引：4
The solubilities of columbite, tantalite, wolframite, rutile, zircon and hafnon were determined as a function of the water contents in peralkaline and subaluminous granite melts. All experiments were conducted at 1035 °C and 2 kbar and the water contents of the melts ranged from nominally dry to approximately 6 wt.% H2O. Accessory phase solubilities are not affected by the water content of the peralkaline melt. By contrast, solubilities are affected by the water content of the subaluminous melt, where the solubilities of all the accessory phases examined increase with the water content of the melt, up to 2 wt.% H2O. At higher water contents, solubilities are nearly constant. It can be concluded that water is not an important control of accessory phase solubility, although the water content will affect diffusivities of components in the melt, thus whether or not accessory phases will be present as restite material. The solubility behaviour in the subaluminous and peralkaline melts supports previous spectroscopic studies, which have observed differences in the coordination of high field strength elements in dry vs. wet subaluminous granitic glasses, but not for peralkaline granitic glasses. Lastly, the fact that wolframite solubility increases with increasing water content in the subaluminous melt suggests that tungsten dissolved as a hexavalent species. 相似文献
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Muriel Rocher Stéphane Baize Stéphane Jaillet Edward Marc Cushing Yannick Lozac&#x;h Francis Lemeille 《Comptes Rendus Geoscience》2003,335(8):701-708
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). 相似文献
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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 相似文献
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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), 相似文献
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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- 相似文献
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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- 相似文献
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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.) 相似文献
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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 相似文献