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Acta Geochimica 2024年第2期43卷 385-398页

作者： Jianzhao Yin yuhong chao Haoyu Yin Hongyun Shi Shoupu Xiang Wuhan Institute of Technology Wuhan 430074China College of Earth Sciences Jilin UniversityChangchun 130061China Ganzhongnan Institute of Geology and Mineral Exploration Nanchang 330002China Guinea Westfi eld Mining Company-Sarlu Jinzhong 031300China Orient Resources Ltd. RichmondB.C.V7E 1M8Canada Silvercorp Metals Inc. Beijing 100027China

By studying the light isotopic compositions of carbon,oxygen,and hydrogen,combined with previous research results on the ore-forming source of the deposit,the authors try to uncover its metallogenic origin.The δ^(18)O and δ^(13)C isotope signatures of dolomite samples vary between 10.2 and 13.0‰,and between−7.2 and−5.2‰,respectively,implying that the carbon derives from the upper mantle.δD and δ^(18) O of quartz,biotite,and muscovite from diff erent ore veins of the deposit vary between−82 and−59‰,and between 11.6 and 12.4‰,respectively,implying that the metallogenic solutions are mainly magmatic.According to the relevant research results of many isotope geologists,the fractionation degree of hydrogen isotopes increases as the depth to the Earth’s core increases,and the more diff erentiated the hydrogen isotopes are,the lower their values will be.In other words,mantle-derived solutions can have extremely low hydrogen isotope values.This means that the δD‰ value−134 of the pyrrhotite sample numbered SD-34 in this article may indicate mantle-derived oreforming fl uid of the deposit.The formation of the Dashuigou tellurium deposit occurred between 91.71 and 80.19 Ma.

关键词： Carbon oxygen and hydrogen isotopes Origin Independent tellurium deposit The Qinghai–Xizang Plateau

Petrochemical eigenvalues and diagrams for the identification of metamorphic rocks'protolith,taking the host rocks of Dashuigou tellurium deposit in China as an example

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Acta Geochimica 2023年第1期42卷 103-124页

作者： Jianzhao Yin Shoupu Xiang yuhong chao Yuhan Yin Hongyun Shi College of Earth Sciences Jilin University2199 Jianshe StreetChangchun 130061China Silvercorp Metals Inc Suite 601-Building 1China View Mansion#A2 East GongTi RoadChaoyang DistrictBeijing 100027China Engineering Geology Brigade of Jiangxi Bureau of Geology 658 Jiefangxilu RoadNanchang 330002Jiangxi ProvinceChina Xuchang Electrical Vocational College Xuchang 461000China Orient Resources Ltd 9280 Kirkmond CrescentRichmondB.C V7E 1M8Canada

The Dashuigou tellurium deposit is the world’s only known independent tellurium deposit.By restoring metamorphic rocks’protolith,we seek to understand not only the development and evolution trajectory of the region but also the origin of the relevant deposits.While there are many ways to restore metamorphic rocks’protolith,we take the host metamorphic rocks of Dashuigou tellurium deposit and leverage various petrochemical eigenvalues and related diagrams previously proposed to reveal the deposit’s host metamorphic rocks’protolith.The petrochemical eigenvalues include molecular number,Niggli’s value,REE parity ratio,CaO/Al_(2)O_(3)ratio,Fe^(3+) /(Fe^(3+) -+Fe^(2+) )ratio,chondrite-normalized REE value,logarithmic REE value,various REE eigenvalues including scandium,Eu/Sm ratio,total REE amount,light and heavy REEs,δEu,Eu anomaly,Sm/Nd ratio,and silicon isotope δ^(30) SiNBS-29‰,etc.The petrochemical plots include ACMs,100 mg-c-(al+alk),SiO_(2)-(Na_(2)O+K_(2)O),(al+fm)-(c+alk)versus Si,FeO+Fe_(2)O^(3+) TiO)-Al_(2)O_(3)-MgO,c-mg,Al_(2)O_(3)-(Na_(2)O+K_(2)O),chondrite-normalized REE model,La/Yb-REE,and Sm/Nd ratio,etc.On the basis of these comprehensive analyses,the following conclusions are drawn,starting from the many mantle-derived types of basalt developed in the study area of different geological ages,combined with the previously published research results on the deposit s fluid inclusions and sulfur and lead isotopes.The deposit is formed by mantle degassing in the form of a mantle plume in the late Yanshanian orogeny.The degassed fluids are rich in nano-sc ale substances including Fe,Te,S,As,Bi,Au,Se,H_(2),CO_(2),N_(2),H_(2)O,and CH_(4),which are enriched by nano-effect,and then rise to a certain part of the crust in the form of mantle plume along the lithospheric fault to form the deposit.The ultimate power for tellurium mineralization was from H_(2)flow with high energy,which was produced through radiation from the melted iron of the Earth’s outer core.The H,flow results in the Earth’s degassing,as well as th

关键词： Petrochemical diagrams and eigenvalue Protolith Metamorphic rock Independent tellurium deposit Host rock The mantle plume

Correlations between trace elements in pyrite and gold mineralization of gold deposits on the North China platform

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Acta Geochimica 2023年第6期42卷 1079-1103页

作者： Jianzhao Yin Ying Sun Haoyu Yin Hongyun Shi James Sparling yuhong chao Shoupu Xiang College of Earth Sciences Jilin UniversityChangchun 130061China Wuhan Institute of Technology Wuhan 430074China College of Geoexploration Science and Technology Jilin UniversityChangchun 130062China Guinea Westfield Mining Company-Sarlu Jinzhong 031300China Orient Resources Ltd. RichmondBC V7A 4V5Canada Hochschild Mining Canada Corp. Suite 1700 Park Place666 Burrard StreetVancouverBC V6C 2X8Canada Ganzhongnan Institute of Geology and Mineral Exploration 658 Jiefangxilu RoadNanchang 330002China Silvercorp Metals Inc. Suite 601-Building 1China View Mansion#A2 East GongTi RoadChaoyang DistrictBeijing 100027China

By studying both the microscopic physical and chemical typomorphic characteristics of typical mineral pyrite samples associated with representative gold deposits on the north-central margin of the North China Platform,this paper seeks to identify macroscopic metallogenic mechanisms of gold deposits and to reveal the formation mechanism of lattice gold in pyrite.Typomorphic characteristics of pyrite reveal that pyrite grain size has a negative correlation with gold content.Cubic pyrite,as the dominant crystal form,contains more gold than pentagonal dodecahedral pyrite.Both pyrite crystal forms and chemical compositions indicate that the replacement style of gold deposit formed in a low saturability,low sulfur fugacity,and at temperatures either much higher or much lower than its best forming temperature;comparatively,that of the quartz vein style of gold deposit occurred under conditions with the best temperature,rich in sulfur,and with high sulfur fugacity.The Au/Ag ratios of the pyrites show that both the replacement and quartz vein styles of deposits are mesothermal and hypothermal,while the Co/Ni ratios of the pyrites indicate that the quartz vein style is of magmatic-hydrothermal origin.The X-ray diffraction intensity of pyrite rich in gold is lower than that of pyrite poor in gold at the quartz vein style.In general,with an increase in gold content in pyrite,the total sum intensityΣI decreases.The pyroelectricity coefficient has a negative correlation trend with the values of(Co+Ni+Se+Te)-As and(Co+Ni+Se+Te)/As.The pyrite pyroelectricity of the replacement style is N-type,indicating that it formed under low sulfur fugacity,while that of the quartz vein style is a mixture of P-N types,indicating that it formed under high sulfur fugacity.On the pyroelectricity-temperature diagram,pyrite of the replacement style is mainly distributed between 200 and 270°C,while that of the quartz vein style varies between 90–118 and274–386°C,demonstrating a multistage forming process.In contrast to previous researchers'conclusi

关键词： Unit cell parameter Pyroelectricity Electron paramagnetic resonance Infrared spectrum Pyrite Gold deposit

Origin of the Dashuigou Independent Tellurium Deposit at the Southeastern Qinghai-Tibet Plateau:Based on the Abundances of Trace Elements in the Country Rocks

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Advances in Geological and Geotechnical Engineering Research 2023年第4期5卷 41-55页

作者： Jianzhao Yin Shoupu Xiang Haoyu Yin Hongyun Shi yuhong chao College of Earth Sciences Jilin UniversityChangchunJilin130061China Wuhan Institute of Technology WuhanHubei430074China Silvercorp Metals Inc. Chaoyang DistrictBeijing100027China Guinea Westfield Mining Company-Sarlu JinzhongShanxi031300China Orient Resources Ltd. RichmondBCV7E 1M8Canada Ganzhongnan Institute of Geology and Mineral Exploration NanchangJiangxi330002China

Through a detailed study of the abundances and spatial-temporal distribution patterns of Te,Bi,As,Se,Cu,Pb,Zn,Au,and Ag in the rock types of different geological epochs in the Dashuigou independent tellurium deposit,and in combination with other research findings of previous researchers in this area,the authors conclude as follows:Abundances of the main ore-forming elements Te,Bi,As,Se,Au,and Ag are not high in the regional geological background,generally lower or close to their respective crustal Clark values,but almost all altered country rocks contain high levels of ore-forming elements.This indicates that the deposit’s ore-forming elements do not come from the country rocks.This also indicates that the geological thermal events that cause alteration and mineralization originate from depths and may be related to mantle plumes.Considering the distribution pattern of these ore-forming elements in the ore bodies’hanging wall and footwall,the metallogenic mechanism may be as follows:Mineralization is not achieved through lateral secretion in the horizontal or near horizontal direction,but rather through the upward movement and emplacement of deep ore-forming elements driven by geological processes such as mantle plumes.In addition,the migration of deep ore-forming elements is not achieved through dispersed infiltration between overlying rock particles,but through non widespread concentrated penetrating channels.This type of channel is likely to be the expansion structures where faults from different directions intersect,or where linear faults intersect with circular structures.

关键词： Origin of ore-forming elements The Dashuigou independent tellurium deposit Trace element abundance The country rocks The mantle plume

考虑箱流中转的高速铁路快捷货物运输方案优化

维普期刊数据库评论

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铁道运输与经济 2024年第2期46卷 71-78,89页

作者：晁宇宏邸俊辉曹亮高如虎江雨星兰州交通大学交通运输学院甘肃兰州730070 呼和浩特职业学院铁道学院内蒙古呼和浩特010010 包头铁道职业技术学院铁道交通运营管理系内蒙古包头014060

为充分发挥高铁干线运输能力及溢出效应,采用高速铁路载客动车组捎带模式,以时变箱流需求为导向,旨在对考虑箱流中转情形下的高速铁路快捷货物运输方案进行优化。基于既有列车运行图,在生成列车接续关系矩阵的基础上构建运输方案优化模... 详细信息

为充分发挥高铁干线运输能力及溢出效应,采用高速铁路载客动车组捎带模式,以时变箱流需求为导向,旨在对考虑箱流中转情形下的高速铁路快捷货物运输方案进行优化。基于既有列车运行图,在生成列车接续关系矩阵的基础上构建运输方案优化模型,以快运箱总运达时间最短为目标,考虑箱流守恒、列车装载能力、箱流中转等约束。基于模型特性,设计模拟退火算法求解,在生成初始解的基础上,设计以消解违背列车能力约束冲突为核心的可行化算法。以宁杭高速铁路为背景验证模型及算法的有效性。结果表明,与不考虑箱流中转情形相比,该模型所得运输方案无快运箱滞留且列车平均满载率提升14%。此外,合理地估算列车装载能力对于获得较好的箱流运输方案具有重要作用。

关键词：高铁快运时变需求运输方案箱流中转模拟退火

Mobility of rhenium and selenium during chemical weathering and their implication for petrogenic organic carbon oxidation

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Science China Earth Sciences 2024年第3期67卷 740-750页

作者： yuhong ZHANG Jin WANG Yuanxin QU chao ZHU Zhangdong JIN State Key Laboratory of Loess and Quaternary Geology Institute of Earth EnvironmentChinese Academy of SciencesXi'an 710061China University of Chinese Academy of Sciences Beijing 100049China Xi'an Institute for Innovative Earth Environment Research Xi'an 710061China Institute of Global Environmental Change Xi'an Jiaotong UniversityXi'an 710049China

The oxidative weathering of petrogenic organic carbon(OC_(petro)) is an important source of carbon dioxide(CO_(2)) into the atmosphere on geological timescales and significantly influences the carbon cycle and global climate change. However, at present, a robust proxy to assess OC_(petro)oxidation is lacking. Riverine rhenium(Re) has emerged as a potential proxy to trace OC_(petro)oxidation, but little is known about Re sources and its relationship with OC_(petro)oxidation. To better understand the robustness of this proxy, we analyzed a shale weathering profile from the early Cambrian Shuijingtuo Formation in Chengkou County, Chongqing City, to address the mobility of Re and selenium(Se) and their relationship with the oxidation of OC_(petro)by analyses of the elemental variation and sequential extraction. The results showed that the chemical index of alteration(CIA)increases from the fresh bedrock to the weathered sections, indicating enhanced weathering intensity. Based on the sequential extraction and mass transfer coefficients(τ), Re and Se mainly exist in the organic phase of shale and are paired lost with OC_(petro) during weathering, with no obvious correlation with sulfide minerals. Furthermore, the different proportions of Re and Se loss with OC_(petro) loss can be attributed to their different geochemical behaviors during weathering. Our study supports Re as a robust proxy to trace OC_(petro) oxidation, whereas Se is the potential one. In the future, combined studies on various sedimentary rock profiles with catchment basins are needed to determine the sources of riverine Re and Se and their relationships with OC_(petro) oxidation.

关键词： Rhenium and selenium Shale Mobility OC_(petro) Chemical weathering

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基于备选集的高铁快运专列开行方案优化

铁道科学与工程学报 2022年第12期19卷 3505-3514页

作者：晁宇宏高如虎牛惠民兰州交通大学交通运输学院甘肃兰州730070 包头铁道职业技术学院铁道交通运营管理系内蒙古包头014060

以快运需求与列车服务最佳匹配为导向,根据高铁快运服务流程,构建考虑图定列车装载能力、停站方案、发车时间以及唯一性等约束的图定列车配装方案优化模型。模型以优化决策图定列车对于快运需求的服务方案为目的,以各站点剩余快运箱数... 详细信息

以快运需求与列车服务最佳匹配为导向,根据高铁快运服务流程,构建考虑图定列车装载能力、停站方案、发车时间以及唯一性等约束的图定列车配装方案优化模型。模型以优化决策图定列车对于快运需求的服务方案为目的,以各站点剩余快运箱数量最少为优化目标。若图定列车难以满足快运需求,需以各站点剩余快运箱为研究对象,增开快运专列并对其开行方案进行优化。通过引入快运专列备选集,预先给定最大列车开行对数及其运行区段,建立考虑列车能力、车站能力、区段通过能力以及箱流守恒等约束的快运专列开行方案优化模型,综合决策快运专列开行对数、运行区段、停站方案以及箱流分配方案等内容。针对模型特点,设计包含增开、停开列车以及增加、减少停站次数等邻域解搜索策略的模拟退火算法,并提出专门的初始解生成以及箱流分配启发式策略。以兰新高速铁路为背景进行实例验证,结果表明,所提方法能有效满足各站点快运需求,解决快运箱的滞留问题,并且所得快运专列的开行方案效果良好,具有较高的箱流满载率及与各站点快运需求相耦合的停站方案。研究结果能有效解决快运需求与列车开行方案的匹配问题,有助于提高高铁快运服务水平和铁路企业经济效益。

关键词：高铁快运列车开行方案备选集邻域搜索模拟退火

Taylor-Couette波状涡的周期性特征研究

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华中科技大学学报（自然科学版） 2024年第4期52卷 113-120页

作者：毛玉红陈超王敏兰州交通大学环境与市政工程学院甘肃兰州730070

采用大涡模拟(LES)方法对Taylor-Couette涡流场进行瞬态数值模拟,研究了波状涡流场中不同旋转雷诺数下环隙子午面上涡流场特征随时间的变化情况,分析了波状涡流场的周期性变化规律.结果表明:Taylor-Couette波状涡流场内的涡旋大小、形... 详细信息

采用大涡模拟(LES)方法对Taylor-Couette涡流场进行瞬态数值模拟,研究了波状涡流场中不同旋转雷诺数下环隙子午面上涡流场特征随时间的变化情况,分析了波状涡流场的周期性变化规律.结果表明:Taylor-Couette波状涡流场内的涡旋大小、形态及涡心位置存在周期性变化规律,相邻涡旋的形态与特征呈现相反的变化趋势;涡旋、涡核的变化周期几乎完全相同,当转速为20 r/min时,涡旋和涡核的周期变化时间分别为6.80 s和6.83 s,当转速为40 r/min时,涡旋和涡核的周期变化时间分别为1.49 s和1.50 s,但涡核的变化趋势在周期变化过程中处于主导地位;随着旋转雷诺数的增大,波状涡的变化周期逐渐减小,说明周期的数值变化一定程度上可以反映并衡量Taylor-Couette涡流场形态的转变过程.

关键词：大涡模拟 Taylor-Couette涡流场波状涡周期性特征

Damage to urban buildings in zones of intensities Ⅷ and Ⅶ during the Wenchuan earthquake and discussion on some typical damages

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Earthquake Science 2009年第2期22卷 165-173页

作者： Jingjiang Sun yuhong Tang chao Zheng Hongbin Shi Lin Lin Zhongxian Sun Institute of Engineering Mechanics China Earthquake Administration Harbin 150080 China

The outline and typical characteristics of damages to building in Jiangyou city and Anxian county （intensity Ⅷ）, Mianyang city and Deyang city （intensity Ⅶ） are introduced in the paper. The damage ratios, based on the sample statistics of multi-story brick buildings together with multi-story brick buildings with RC frame at first story （BBF）, are presented. Then some typical damages, such as horizontal cricks of brick masonry buildings, X-shaped cricks on the walls under windows, the damages to columns, beams and infill walls of frame buildings and the damage to half circle-shaped masonry walls, are discussed.

关键词： Wenchuan earthquake damage to building seismic intensity

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基于最大对比度的联合相位误差校正方法

现代雷达 2024年第4期46卷 110-115页

作者：张超张榆红张益鑫西安工程大学电子信息学院陕西西安710600

针对高分辨率逆合成孔径雷达(ISAR)成像过程中,因目标转动所引入的转动相位误差无法被忽略,以及由于转动相位误差使得传统平动相位误差校正方法性能严重下降的问题,提出了一种基于最大对比度的联合相位误差校正的方法,可同时校正残余的... 详细信息

针对高分辨率逆合成孔径雷达(ISAR)成像过程中,因目标转动所引入的转动相位误差无法被忽略,以及由于转动相位误差使得传统平动相位误差校正方法性能严重下降的问题,提出了一种基于最大对比度的联合相位误差校正的方法,可同时校正残余的平动相位误差和转动相位误差,进一步提高成像的质量。首先利用传统的运动补偿方法对回波信号进行处理,其次根据最大对比度准则,将相位误差校正问题转化为最大对比度优化问题,最后利用改进的拟牛顿算法进行求解。该方法能使高分辨率ISAR进行精准成像,且所得图像聚焦效果良好。通过对仿真数据和实测数据的处理,验证了文中方法的有效性。

关键词：逆合成孔径雷达最大对比度拟牛顿算法相位误差