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Underground Space 2024年第1期14卷 219-238页

作者： Fayun Liang zhuwei jiang Qiang Yuan Lin Li Rulu Wang Department of Geotechnical Engineering Tongji UniversityShanghai 200092China School of Highway Chang’an UniversityXi’an 710064China Shanghai Shentong Metro Group Limited Maintenance Center Shanghai 20070China

The surcharge load at the ground surface inevitably breaks the original equilibrium state between the underneath tunnel and the surrounding soil,which will impact the service performance of a subway *** paper presents a novel semi-analytical approach for assessing the time-dependent,longitudinal responses of a subway tunnel in soft soil strata induced by the surcharge *** solution is developed based on the framework of the classical"two-stage method"but innovatively incorporates the effects of ground stratification,the consolidation process,and the longitudinal stiffness reduction of the ***’s poroelastic theory in conjunction with the Laplace-Fourier transform technique is selected to model the deformation of the stratified ground,while the Timoshenko beam on a Pasternak foundation is employed to model the mechanical responses of the *** proposed semi-analytical solution is validated not only by comparison with benchmark solutions and a finite element model,but also by predicting a well-documented field *** analyses are conducted to investigate the effects of the elastic modulus and the permeability coefficient of the stratified ground on the longitudinal responses of the *** is expected that the proposed solution can serve as a useful tool for evaluating the effects of the surcharge load on the longitudinal responses of a subway tunnel.

关键词： Time-dependent Longitudinal responses Stratified ground Subway tunnels Ground surface surcharge Consolidation

The Deep Structure Feature of the Sichuan Basin and Adjacent Orogens

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Acta Geologica Sinica(English Edition) 2015年第4期89卷 1153-1164页

作者： XIONG Xiaosong GAO Rui GUO Lianghui WANG Haiyan jiang zhuwei State Key Laboratory of Continental Tectonics and Dynamics Key Laboratory of Earthprobe and GeodynamicsMLRInstitute of GeologyChinese Academy of Geological Sciences School of Geophysics and Information Technology China University of Geosciences McKay Brook Resources Pty Ltd.

The basin-mountain system in the Sichuan Basin （SCB） reflects the main tectonic activity and the orogenic denudation in this region. The seismic probing work reveals the deep structure of the basin-mountain system. The seismic work was re-sampled to the Moho depth and the sedimentary thickness as well as the P-wave velocity=depth function to analyze the deep structure of the SCB and adjacent orogens. The results show two deposit centers in the SCB： the Deyang area in the west and the Nanchuan area in the east and depression uplift exists in the southwestern part of the SCB; the Moho shallowers gradually from the west to east （ca. 62-36 km deep）,the South-North seismic belt （SNSB） is very distinctive： the Moho depth is much shallower （〈 50 km）to the east of the SNSB, whereas it is much deeper（〉50 kin）to the west of the SNSB, suggesting that the SNSB rather than the Longmen Shan tectonic belt is a main Moho transition belt; the topography and the top interface of the basement have the same undulation trend when the sedimentary thickness and the Moho depth have a mirror relationship; the low velocity zone developed in the Kangdian thrust and fold belt and Songpan-Garze belt implied a soft, weak and thick crust there showing tectonic activity in these areas.

关键词： Sichuan basin basin-range contact zone deep structure top interface of basement Mohodepth

The Characteristics of Migration of Ore Solutions in No.6 East Tin Deposit of the Songshujiao Orefield, Gejiu

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Acta Geologica Sinica(English Edition) 1989年第4期63卷 405-416页

作者： jiang zhuwei and Zhou Dapeng Kunming Institute of Technology, Kunming, Yunnan Fei Zhenbi Kunming Institute of Technology Kunming Yunnan

No. 6 East tin deposit in the Songshujiao orefield, Gejiu, is characterized by one-stage hydrothermal activity and monotonous country rocks. The authors selected this deposit and used the multivariate statistical analysis to study the types of association of main ore-forming elements at different temperatures and pressures and their distribution in the deposit. On that basis combined with the structural analysis of the deposit, the recto-geochemical features of No.6 East tin deposit have been revealed and the direction and channel of migration of the ore solutions in faults and the deposit have been deduced. This research can appropriately elucidate the control of faults on the migration of ore solutions and the sites where ore solutions are dispersed and accumulated, thus providing the theoretical basis for the prediction of hydrothermal deposits in question.

关键词： Gejiu The Characteristics of Migration of Ore Solutions in No.6 East Tin Deposit of the Songshujiao Orefield

A Metallogenic Model of Tecto-Geochemistry on Tin-Polymetal Deposit in Malage Orefield of Gejiu Mining Area

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昆明理工大学学报（自然科学版） 1989年第4期30卷 3-11,29页

作者： Sun Jiacong jiang zhuwei Lei Yueshi Zhou Dapang Yang Herong (Department of Geology)

By means of multivariance analysis and finite element on the basis of the analysis of generation andevolution of structural systems and structural system of syn-metallogenesis in the orefield,the authorsmade a research into the interrelation between tecto-geochemistry and structural stress field,revealedthe mechanism of metallogenesis by magma and ore-forming fluids driven under dynamic forces,andproposed a tecto-geochemistry model for the formation of the ore deposits,so as to suggest a basis oftheory for the prognoses of location and magnitude of hidden deposits.

关键词： Tin-polymetal deposit Metallogenic model Tecto-geochemistry Gejiu Yunnan

Coiflet小波和多目标优化在直流接地故障检测中的应用

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电测与仪表 2016年第2期53卷 62-66页

作者：柴玉华李辰月蒋祝巍东北农业大学哈尔滨150030 国网黑龙江省电力有限公司鹤岗供电公司黑龙江鹤岗154100

低频信号注入法是直流系统接地故障检测中经常用到的方法之一,优点是检测精度较高且操作方法简单,缺点是容易受到对地电容的影响而降低检测精度,文章针对这一缺陷,提出了基于coiflet小波分析的数据提取和多目标优化的数据处理结合的检... 详细信息

低频信号注入法是直流系统接地故障检测中经常用到的方法之一,优点是检测精度较高且操作方法简单,缺点是容易受到对地电容的影响而降低检测精度,文章针对这一缺陷,提出了基于coiflet小波分析的数据提取和多目标优化的数据处理结合的检测方法,该方法可以很大程度上减小对地电容对检测精度的影响,经过MATLAB平台的仿真验证,结果表明,该方法可以有效的提高直流系统接地故障检测的准确性。

关键词：直流系统接地故障小波变换多目标优化 coiflet

Dynamics of Gradient Bioceramic Composite Coating on Surface of Titanium Alloy by Wide-Band Laser Cladding

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Journal of Iron and Steel Research International 2004年第6期11卷 57-62页

作者： LIUQi-bin ZOULong-jiang zhuwei-dong LIHai-tao DONGChuang DalianUniversityofTechnology Dalian116024China GuizhouUniversityofTechnology Guiyang550003China

The gradient bioceramic coating was prepared on the surface of titanium alloy using wide-band laser *** dynamics of gradient bioceramic composite coating containing hydroxyapatite(HA)prepared with mixture of CaHPO4·2H2O and CaCO3 under the condition of wide-band laser was studied *** corresponding mathematical model and its numerical solution were *** examination experiment showed that HA bioceramic composite coatings can be obtained by appropriately choosing wide-band laser cladding *** microstructure and surface morphology of HA bioceramic coating were observed by SEM and X-ray *** experimental results showed that the bioceramic coating is composed of HA,β-TCP,CaO,CaTiO3 and *** surface of bioceramic coating takes coral-shaped structure or short-rod piled structure,which helps osteoblast grow into bioceramic and improves the biocompatibility.

关键词： wide-band laser cladding bioceramic composite coating dynamics

Accelerating H^(*)desorption of hollow Mo_(2)C nanoreactor via in-situ grown carbon dots for electrocatalytic hydrogen evolution

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Journal of Energy Chemistry 2024年第9期96卷 464-471页

作者： Mengmeng Liu Yuanyuan jiang zhuwei Cao Lulu Liu Hong Chen Sheng Ye School of Materials and Chemistry Anhui Agricultural UniversityHefei 230036AnhuiChina

Molybdenum carbide(Mo_(2)C)is a promising non-noble metal electrocatalyst with electronic structures similar to Pt for hydrogen evolution reaction(HER).However,strong H^(*)adsorption at the Mo sites hinders the improvement of HER ***,we synthesized monodisperse hollow Mo_(2)C nanoreactors,in which the carbon dots(CD)were in situ formed onto the surface of Mo_(2)C through carburization *** to finite element simulation and analysis,the CD@Mo_(2)C possesses better mesoscale diffusion properties than Mo_(2)C *** optimized CD@Mo_(2)C nanoreactor demonstrates superior HER performance in alkaline electrolyte with a low overpotential of 57 mV at 10 mA cm^(−2),which is better than most Mo_(2)C-based ***,CD@Mo_(2)C exhibits excellent electrochemical stability during 240 h,confirmed by operando Raman and X-ray diffraction(XRD).Density functional theory(DFT)calculations show that carbon dots cause the d-band center of CD@Mo_(2)C to shift away from Fermi level,promoting water dissociation and the desorption of H^(*).This study provides a reasonable strategy towards high-activity Mo-based HER eletrocatalysts by modulating the strength of Mo–H bonds.

关键词： Mo_(2)C nanoreactor Carbon dots H^(*)desorption Electrocatalytic hydrogen evolution

基于电网安全隐患知识图谱的智能诊断技术研究及应用

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河北电力技术 2022年第4期41卷 20-24页

作者：潘道成邓卫民蒋祝巍何荣超于小晴国网黑龙江省电力有限公司鹤岗供电公司黑龙江鹤岗154100

电力隐患数据难以准确识别,导致无法对潜在安全隐患进行预控和防治,因此提出一种基于电网安全隐患知识图谱的电网智能诊断技术。首先,对电网系统中非结构化的安全隐患数据进行抽取,并设计基于搜索引擎的电网隐患存储方式,实现电网隐患... 详细信息

电力隐患数据难以准确识别,导致无法对潜在安全隐患进行预控和防治,因此提出一种基于电网安全隐患知识图谱的电网智能诊断技术。首先,对电网系统中非结构化的安全隐患数据进行抽取,并设计基于搜索引擎的电网隐患存储方式,实现电网隐患文本的快速处理;其次,利用NLPIR模型对电网隐患文本进行分词处理,为知识图谱构建提供数据支撑;最后,构建电网安全隐患知识图谱动态分析系统,利用知识图谱的图结构对隐患进行动态分析,实现电网隐患的智能诊断。通过实际应用可知,所提诊断技术方法能够发现潜在的规律性隐患,具有良好的应用效果。

关键词：智能诊断电网安全隐患知识图谱

Ultrasonic-assisted plastic flow in a Zr-based metallic glass

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Science China Materials 2021年第2期64卷 448-459页

作者： Chenchen Yuan zhuwei Lv Changmeng Pang Xin Li Rui Liu Can Yang jiang Ma Haibo Ke Weihua Wang Baolong Shen School of Materials Science and Engineering Jiangsu Key Laboratory for Advanced Metallic MaterialsSoutheast UniversityNanjing211189China College of Mechatronics and Control Engineering Shenzhen UniversityShenzhen518060China Songshan Lake Materials Laboratory Dongguan523808China Institute of Physics Chinese Academy of SciencesBeijing100190China

Ultrasonic vibration can be used for the micro-molding of metallic glasses(MGs)due to stress-softening and fast surface-diffusion ***,the structural rearrangement under ultrasonic vibration and its impact on the mechanical response of metallic glasses remain a *** this work,the plastic flow of the Zr35Ti30Cu8.25Be26.75 metallic glass with the applied ultrasonic-vibration energy of 140 J was investigated by *** Kelvin and Maxwell-Voigt models have been adopted to analyze the structural evolution during the creep *** increase of the characteristic relaxation time and the peak intensity of relaxation spectra can be found in the sample after ultrasonic *** effectively improves the activation energy of atomic diffusion during the glass transition(Eg)and the growth of the crystal nucleus(Ep).A more homogenous plastic deformation with a weak loading-rate sensitivity of stress exponent is observed in the ultrasonic-vibrated sample,which coincides with the low pile-up and penetration depth as shown in the cross profile of *** structural rearrangement under resonance actuation demonstrated in this work might help us better understand the defect-activation mechanism for the plastic flow of amorphous systems.

关键词： plastic deformation disordered structure activation energy metallic glass

Deep-Cut Vacuum Distillation in the 10 Mt/a CDU/VDU

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China Petroleum Processing & Petrochemical Technology 2009年第2期11卷 9-13页

作者： Lin zhuwei1 Mao Fuzhong1 jiang Bing2 Chen Kaibei3 Chi Ling3 Yan Chun3(1. KBC Advanced Technologies(Beijing) Co.,Ltd. Beijing 100029 2. The National Engineering Research Center for Rectification Technology,Tianjin University 3. SINOPEC Engineering Incorporation) KBC Advanced Technologies (Beijing) Co. Ltd. Beijing 100029 China National Engineering Research Center for Rectification Technology Tianjin University China SINOPEC Engineering Incorporation China

This article introduces the concepts relating to deep-cut vacuum distillation and its suitability,and analyzes the deep-cut vacuum distillation technique licensed by the KBC Advanced Technologies to the 10 Mt/a CDU/VDU of the Qingdao refinery and makes comparison on the test run data after commissioning of the distillation unit. The test results have confirmed that the operation of the CDU/VDU had reached the expected goal to achieve good social and economic benefits.

关键词： CDU/VDU deep cut under vacuum distillation rate