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矿井煤岩界面节点式雷达快速动态探测系统及实验研究

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煤炭学报 2024年第4期49卷 1964-1975页

作者：许献磊陈令洲彭苏萍梁鹏赵禹深中国矿业大学(北京)煤炭精细勘探与智能开发全国重点实验室北京100083 中国矿业大学(北京)地球科学与测绘工程学院北京100083

煤岩界面识别技术是煤矿智能化开采的关键技术之一。基于高频雷达波探测技术可实现煤岩界面的随采高精度探测,但仍存在矿井超大采高(≥6 m)片帮垮落带来设备的安全风险及采高突变(采高≤2 m)时空间限制设备通过的问题。在前期工作基础... 详细信息

煤岩界面识别技术是煤矿智能化开采的关键技术之一。基于高频雷达波探测技术可实现煤岩界面的随采高精度探测,但仍存在矿井超大采高(≥6 m)片帮垮落带来设备的安全风险及采高突变(采高≤2 m)时空间限制设备通过的问题。在前期工作基础上提出了一种矿井煤岩界面节点式雷达快速动态探测系统并进行了煤岩界面探测实验研究,主要内容包括:①阐述矿井节点式雷达观测系统原理,根据矿井工作面实际环境设计煤岩界面识别观测系统方案及雷达传感单元安装方式;②研究并提出节点式采集控制系统和信息交互传输设计方案,实现数据动态采集控制及存储;③针对节点式采集方式及煤岩界面雷达反射回波特征,研究提出了节点探测数据增强处理方法、煤岩界面识别算法,可有效的实现煤岩界面智能识别与追踪、煤层厚度及空间坐标解算。为验证该方法的可行性,采用多个中心频率为1.5 GHz的探地雷达传感单元进行物理模型验证实验,并对节点式数据采集和连续数据采集结果进行了对比分析,实验结果表明:节点式采集方法与连续采集方法均可有效识别出煤岩界面,与连续采集方法相比,本文提出的节点式探测方法可实现数据的快速动态重复性采集,单次采集时长控制在10 s以内,煤层厚度探测结果平均误差为1.07 cm,最大误差为1.47 cm,平均误差百分比为7.64%。本方法为矿井智能化开采中煤岩界面的动态高精度探测提供技术支撑。

关键词：煤岩识别探地雷达节点式雷达观测系统误差分析

西部煤矿区微生物修复促进植物水分高效利用策略

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煤炭学报 2024年第2期49卷 1003-1010页

作者：毕银丽武超彭苏萍田乐煊张延旭西安科技大学地质与环境学院陕西西安710054 西安科技大学西部矿山生态环境修复研究院陕西西安710054 中国矿业大学(北京)矿山生态修复研究院北京100083

西部煤矿区生态环境脆弱,叠加高强度开采致使水土流失、土壤退化、根系受损,植物水分利用效率低,生态恢复困难,提高水分利用效率成为西部矿区生态修复或重建的关键。土壤水是限制干旱半干旱煤矿区生态修复的关键因素,它连接大气水、地... 详细信息

西部煤矿区生态环境脆弱,叠加高强度开采致使水土流失、土壤退化、根系受损,植物水分利用效率低,生态恢复困难,提高水分利用效率成为西部矿区生态修复或重建的关键。土壤水是限制干旱半干旱煤矿区生态修复的关键因素,它连接大气水、地表水、地下水与植被生长,是水分循环与养分运输的重要载体。土壤水分的高效与合理利用关系到生态修复的成败,因此探究植物根系水分利用策略对于西部煤矿区生态修复具有重要作用。分析了国内外植物水分利用的主要研究方法,比较了不同方法之间的优缺点及相应研究进展。在干旱半干旱煤矿区受损生态环境中,采用植物-微生物联合的微生物修复技术,能提高植物水分利用效率,改善植物水分利用策略。同时,接种微生物降低了植物从浅层土壤吸收水分的比例,有效地增加植物从深层土壤中吸收和利用水分,提升了植物水分利用效率,使接菌植物在干旱半干旱煤矿区表现出更高的生态适应性。分析了目前西部煤矿区植物水分利用的研究进展和存在的问题,探讨了煤矿区微生物修复对水分利用策略的改善,提出了西部干旱煤矿区生态修复中不同植物组合对水分利用策略的影响及其研究重点,为实现矿区绿色可持续、高质量发展奠定了扎实的基础,具有重要的生态应用价值。

关键词：西部煤矿区丛枝菌根真菌植物水分利用策略水同位素技术植被组合

GPU-acceleration 3D rotated-staggered-grid solutions to microseismic anisotropic wave equation with moment tensor implementation

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International Journal of Mining Science and Technology 2023年第4期33卷 403-410页

作者： Jing Zheng Lingbin Meng Yuan Sun suping peng State Key Laboratory of Coal Resources and Safe Mining China University of Mining and Technology-BeijingBeijing 100083China College of Geoscience and Surveying Engineering China University of Mining and Technology-BeijingBeijing 100083China

To improve the accuracy of microseismic inversion,seismic anisotropy and moment tensor source should be carefully considered in the forward modelling *** this study,3D microseismic anisotropy wave forward modelling with a moment tensor source was *** modelling was carried out based on a rotated-staggered-grid(RSG)*** contrast to staggered-grids,the RSG scheme defines the velocity components and densities at the same grid,as do the stress components and elastic ***,the elastic moduli do not need to be *** addition,the detailed formulation and implementation of moment-tensor source loaded on the RSG was presented by equating the source to the stress ***,the RSG-based 3D wave equation forward modelling was performed in parallel using compute unified device architecture(CUDA)programming on a graphics processing unit(GPU)to improve its *** simulations including homogeneous and anisotropic models were carried out using the method proposed in this paper,and compared with other methods to prove the reliability of this ***,the high efficiency of the proposed approach was *** results show that the computational efficiency of proposed method can be improved by about two orders of magnitude compared with traditional central processing unit(CPU)computing *** could not only help the analysis of microseismic full wavefield records,but also provide support for passive source inversion,including location and focal mechanism inversion,and velocities inversion.

关键词： Microseismic Forward modelling Seismic anisotropy Moment tensor

Lithium extraction from salt lakes with different hydrochemical types in the Tibet Plateau

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Geoscience Frontiers 2023年第1期14卷 230-246页

作者： Tao Ding Mianping Zheng suping peng Yuhan Lin Xuefei Zhang Mingming Li College of Geoscience and Surveying Engineering China University of Mining and Technology(Beijing)Beijing 100083China MNR Key Laboratory of Saline Lake Resources and Environments Institute of Mineral ResourcesChinese Academy of Geological SciencesBeijing 100037China

The demand for lithium resources is increasing sharply with the rapid development of electric *** is of great economic significance to expand the geological resources of lithium and improve the utilization rate of lithium-containing salt *** this paper,the hydrochemical types of the lithium-containing salt lakes in the Tibet Plateau were classified according to a large amount of hydrochemical data obtained from a recent investigation on the Tibet *** addition,the lithium extraction methods used in the salt lakes within each hydrochemical type area were analyzed and summarized,which provided a reference for the selection of lithium extraction processes in the same hydrochemical type of lithium-containing salt lakes in the *** binding energies of Li(l)and anions in salt lakes with different hydrochemical types were calculated by density functional theory,which provides the theoretical basis for selecting the best lithium extraction technology in different salt *** emphasize that the process with the combined characteristics of high efficiency,economy and environmental protection should be selected according to the hydrochemical type of different salt *** the future,different salt lakes should focus on direct lithium extraction technology from the original brine.

关键词： Tibet Plateau Lithium-containing salt lake Hydrochemical type Lithium extraction process

Influence of geological factors on coal permeability in the Sihe coal mine

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International Journal of Coal Science & Technology 2022年第1期9卷 58-70页

作者： Guangui Zou Qianhua Zhang suping peng Jiasheng She Deliang Teng Chaochao Jin Yuyan Che State Key Laboratory of Coal Resources and Safe Mining BeijingChina College of Geoscience and Surveying Engineering China University of Mining&TechnologyBeijingChina

Permeability of coal reservoirs influence the extraction of coal gas from coal *** coal samples were collected at an anticline and a syncline of the No.3 coal seam in the Sihe coal ***,permeability,pore size,vitrinite reflectance,and liquid nitrogen adsorption of the samples were *** curvatures at the sample locations,and the distance between the sampling locations and the nearest faults were calculated based on seismic *** influences of the evaluated parameters on permeability were *** factors that influence permeability of the No.3 coal seam were extracted using principal component analysis(PCA).Based on the porosity–permeability model derived from the Archie formula and classic Kozeny–Carman equation,we deduced that the permeability of coal increased with an increase in *** an increase in average vitrinite reflectance,permeability decreases first and then *** results showed that coal permeability was regulated by three key components representing three *** first component included pore size,depth,and pore complexity accounting for 52.59%of the variability indicating that it was the most important in controlling *** second component included specific surface area,structural curvature,and porosity,and the third component comprised of specific surface area,porosity,and average vitrinite ***,pore diameter and complexity had significant effects on coal *** results show that researchers and stakeholders must consider the interactions among multiple factors rather than single factors to understand the influences on permeability to facilitate efficient utilization of coalbed methane resources.

关键词： Coal mine Permeability Geological factors Principal component analysis

Current status of national integrated gasification fuel cell projects in China

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International Journal of Coal Science & Technology 2021年第3期8卷 327-334页

作者： suping peng Research Center of Solid Oxide Fuel Cell State Key Laboratory of Coal Resource and Safety MiningChina University of Mining and Technology-BeijingBeijing 100083China

Coal has been the main energy source in China for a long ***,the energy industry must improve coal power generation efficiency and achieve near-zero CO_(2) *** gasification fuel cell(IGFC)systems that combine coal gasification and high-temperature fuel cells,such as solid oxide fuel cells or molten carbonate fuel cells(MCFCs),are proving to be promising for efficient and clean power generation,compared with traditional coal-fired power *** 2017,with the support of National Key R&D Program of China,a consortium led by the China Energy Group and including 12 institutions was formed to develop the advanced IGFC technology with near-zero CO_(2) *** objectives of this project include understanding the performance of an IGFC power generation system under different operating conditions,designing master system principles for engineering optimization,developing key technologies and intellectual property portfolios,setting up supply chains for key materials and equipment,and operating the first megawatt IGFC demonstration system with near-zero CO_(2) emission,in early *** this paper,the main developments and projections pertaining to the IGFC project are highlighted.

关键词： Integrated gasification fuel cell(IGFC) Fuel cell Coal-based power generation Near-zero CO_(2)emissions

Special issue on integrated gasification fuel cell(IGFC)technology

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International Journal of Coal Science & Technology 2021年第3期8卷 325-326页

作者： suping peng Research Center of Solid Oxide Fuel Cell State Key Laboratory of Coal Resource and Safety MiningChina University of Mining and Technology-BeijingBeijing 100083China

Coal is the primary fossil fuel used globally for electricity generation and chemical products for a long ***,utilization of coal also results in emissions of CO_(2)and other *** present,global climate change due to greenhouse gases,especially CO_(2),is becoming more and more *** is necessary to improve the efficiency of coal power generation and achieve nearly zero CO_(2)emissions.

关键词： becoming globally gases

Three new species of Genus Cryptonatica (Gastropoda,Naticidae) from Huanghai Sea Cold Water Mass

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Acta Oceanologica Sinica 2010年第1期29卷 52-57页

作者： ZHANG suping WEI peng Institute of Oceanology Chinese Academy of Sciences Qingdao 266071 China

This report based on the results of investigations conducted in June 2007 and July 2008, respectively, on the benthic community structure and characteristic diversity of the Huanghai Sea （Yellow Sea） Cold Water Mass, as well as that in July 1959 during the national oceanic survey. The Naticidae specimens collected from Cold Water Mass in middle and northern Huanghai Sea were studied through morphological classification and the internal anatomy on radula. Three new species of Naticidae, i.e., Cryptonatica purpurfunda sp. nov., Cryptonatica sphaera sp. nov., and Cryptonatica striatica sp. nov. were identified. The morphological characteristics of the new species are described, and the similarties and differences between the new species and similar species are compared and discussed.

关键词： Mollusca Gastropoda Naticidae Cryptonatica new species Huanghai Sea Cold Water Mass

Metallogenic Correlations for the Fe-Nb-REE Mineralization in the West Mine of the Bayan Obo Deposit, Inner Mongolia, China

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Acta Geologica Sinica(English Edition) 2018年第2期92卷 614-626页

作者： SU Li peng suping China State Key Laboratory of Coal Resources and Safe Mining China University of Mining and Technology College of Mining and Coal Engineering Inner Mongolia University of Science and Technology

The West Mine of the Bayan Obo deposit, located in the northern-central part of Inner Mongolia, China, is enriched in Nb, rare earth elements and iron （Nb-REE-Fe） mineral resources. This paper presents a combined method to explore metallogenic correlation of the Nb-REE-Fe mineralization at the Bayan Obo West Mine. The method integrates factor analysis and Back Propagation （BP） neural network technology into processing and modeling of geological data. In this study, the Nb and REE contents of samples were transformed into discrete values to analyze the correlations among the metallogenic elements. The results show weak mineralization correlations between Nb and REEs. Nb and U are closely related in the geochemical patterns, while Fe is closely related to both Th and Mn. LREEs are an important factor for the mineralization of the Bayan Obo deposit, while Fe and Nb can be considered as the results of passive mineralization. On the basis of a metallogenic correlation analysis, the factors affecting the Fe-REE-Nb mineralization were extracted, and the Nb mineralization model was established by the BP neural network. Based on the BP neural network data computing, the variability of the Nb concentration displays a coupled multi-factor nonlinear relationship, which can be used to reveal the inherent metallogenic elemental regularities and predict the degree of element mineralization enrichment in the mining area.

关键词： Factor analysis BP neural network metallogenic correlation mineralization prediction modeling Bayan Obo deposit