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Industry-University-Research collaboration networks:the identification and driving factors of key technologies 认领 引用
1
作者 Qining Peng Xian Zhang Zhenkang Fu 《Journal of Data and Information Science》 CSCD 2026年第1期146-174,共29页
Purpose:This study aims to analyze the key technologies in Industry–University–Research(IUR)cooperation within higher education institutions,deepen the understanding of the mechanisms of IUR cooperation and the proc... Purpose:This study aims to analyze the key technologies in Industry–University–Research(IUR)cooperation within higher education institutions,deepen the understanding of the mechanisms of IUR cooperation and the process of technological innovation,and reveal the dynamic evolution patterns and driving mechanisms of key technologies in IUR cooperation alliance networks at different stages.It also provides clear directions and strategic recommendations for cooperation among universities,enterprises,and research institutions.Methodology:This study uses patents applied for through IUR cooperation by Chinese Double First-Class universities from 2015 to 2024 as the data basis and employs the Louvain algorithm to divide IUR cooperation applicants.Subsequently,a Technology–Applicant network is constructed at two-year intervals,and key technologies are extracted using network information entropy.The evolution paths of technological characteristics are then thoroughly analyzed.Finally,the study proposes three hypotheses and employs the Exponential Random Graph Model(ERGM)to systematically elucidate the endogenous driving mechanisms of key technology characteristics in the applicant.Findings:Over the past decade,IUR cooperation in Chinese Double First-Class universities has undergone a transformation from single technological fields to the deep integration of multiple technological fields and from traditional application areas to emerging ones.The knowledge depth,knowledge width,and knowledge combination capabilities of IUR applicants,as core independent variables,have had varying impacts on network formation across different time periods.Among them,knowledge combination capability has played a significant role in promoting network formation.Research limitations:On the one hand,this study mainly focuses on the Double First-Class universities in China and does not cover other types of universities.On the other hand,while the study mainly focuses on the analysis of the IUR technology network,the analysis of the cooperation network between applicants is still insufficient.Practical implications:This study provides practical guidance for optimizing IUR cooperation networks by emphasizing the integration of multiple technological fields,balancing knowledge depth and width,enhancing knowledge combination ability,and optimizing the internal network structure.These measures help to strengthen the stability and efficiency of cooperation networks,boost innovative outcomes,and provide strong support for scientific and technological progress as well as economic development.Originality/value:This study examines the evolution of key technologies and their impact on IUR cooperation networks in China over ten years.It shows a shift from single to multiple technological fields and from traditional to emerging applications,highlighting Chinese global competitiveness.Core variables like knowledge depth,width,and combination ability differently affect network formation over time,with knowledge combination being consistently significant.Network structural characteristics also crucially regulate stability and efficiency.The findings offer theory-based practical guidance to optimize these networks. 展开更多
关键词 Industry–University–Research(IUR)collaboration networks Key technologies Bipartite network Information entropy Exponential Random Graph Model(ERGM)
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Breaking the stranglehold on key technologies:building an integrated"R&D-Application-Promotion"ecosystem for domestic scientific instruments 认领 引用
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作者 Yingli Xu Jing Wang +3 位作者 Xiaomeng Shi Xia Yuan Qian Wang Shuxiang Song 《Journal of Chinese Pharmaceutical Sciences》 CAS CSCD 2026年第1期88-97,共10页
Scientific instruments serve as foundational pillars for both scientific progress and industrial innovation,enabling deep exploration and driving technological breakthroughs.Their independent controllability and conti... Scientific instruments serve as foundational pillars for both scientific progress and industrial innovation,enabling deep exploration and driving technological breakthroughs.Their independent controllability and continuous innovation are indispensable for sustaining a competitive advantage in technological development,thereby securing national scientific capacity and long-term strategic growth.At present,however,China faces substantial risks of technological"stranglehold"in the high-end scientific instrument domain.The underlying causes are multifaceted,arising not only from insufficient accumulation of core technologies but also from entrenched systemic and ecosystem-level barriers that impede the application,scaling,and promotion of domestic instruments.This paper provides a systematic analysis of the challenges hindering the widespread adoption of domestically developed scientific instruments and proposes practical pathways to build a new,integrated"R&D-application-promotion"ecosystem.This ecosystem is anchored in trust,driven by user demand,and shaped through collaborative innovation.Key initiatives include organizing user visits to instrument manufacturers,convening seminars on domestic alternatives to imported equipment,establishing demonstration centers for application and promotion,and involving end-users directly in the R&D and iterative upgrading of domestic instruments.Together,these efforts aim to close the final critical gap,advancing domestic instruments from merely"functional"to genuinely"user-friendly",and ultimately to"widely implemented".By doing so,this framework offers both theoretical grounding and practical guidance for achieving high-level scientific and technological self-reliance and sustained innovation capacity. 展开更多
关键词 Domestic scientific instruments Strangleholdof key technology Application promotion Industry-university-researchapplication collaboration Scientific and technological self-reliance and strengthening
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Special Topic on AI-Agent Communication Network(ACN):Architecture,Protocols and Key Technologies 认领 引用
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作者 Sun Tao Cui Yong 《ZTE Communications》 2026年第2期1-2,共2页
AI agents,whether embodied as physical entities or existing as software,are developing extremely fast and are believed to be vital for 6G and the whole Internet in the future.The communication network shall evolve to ... AI agents,whether embodied as physical entities or existing as software,are developing extremely fast and are believed to be vital for 6G and the whole Internet in the future.The communication network shall evolve to meet the great potential increase in the number of agents.AI agents are expected to become new users but with quite different traffic patterns,varying quality of service(QoS)requirements,and multi-modality data. 展开更多
关键词 communication network key technologies AI agent software physical entities protocols ai agentswhether architecture
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Key Technologies and Management Strategies for Ensuring Construction Quality in Prefabricated Building Projects 认领 引用
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作者 CHENG Zhe 《外文科技期刊数据库（文摘版）工程技术》 2026年第4期125-129,共5页
With the accelerated transformation and upgrading of China's construction industry, prefabricated buildings have experienced rapid growth due to their advantages in efficiency and environmental sustainability. How... With the accelerated transformation and upgrading of China's construction industry, prefabricated buildings have experienced rapid growth due to their advantages in efficiency and environmental sustainability. However, the modular nature of their design, production, transportation, and assembly processes presents more complex challenges for quality control compared to traditional cast-in-place methods, with the disconnect between key technologies and management practices becoming a major bottleneck to high-quality development. This paper comprehensively examines the critical technical and managerial coordination issues affecting construction quality in prefabricated buildings. It thoroughly analyzes the distinctive characteristics of prefabricated construction and the specific quality challenges arising from component precision, joint connections, and multi-stage integration. Special attention is given to core technical measures for ensuring construction quality—including design optimization and precision management of prefabricated components, quality control during production and transportation, quality maintenance during on-site storage and usage, as well as precise positioning adjustments and advanced connection techniques during assembly. The study identifies gaps in coordination across the entire construction process, including inadequate integration among design, production, and construction phases, information barriers among industry stakeholders, and conflicting decision-making processes—key challenges in current management practices. To address these issues, the paper proposes an integrated approach leveraging information technology to enhance construction quality management. 展开更多
关键词 Prefabricated construction Construction quality Key technologies Management collaboration BIM technology
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Key Technologies and Risk Control in the Construction of Super-Tall Buildings 认领 引用
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作者 LIU Dewei 《外文科技期刊数据库（文摘版）工程技术》 2026年第3期087-091,共5页
Due to intensive urban development, supertall buildings have become the most prominent feature of modern city skylines. This article focuses on discussing the critical steps and technical methodologies involved in con... Due to intensive urban development, supertall buildings have become the most prominent feature of modern city skylines. This article focuses on discussing the critical steps and technical methodologies involved in constructing supertall buildings, as well as the various risks associated with such projects. The aim is to comprehensively clarify current technological advancements, thoroughly examine the specific manifestations of major risks, and propose effective integrated management and control strategies. The paper first examines the factors driving the rapid growth of supertall buildings, emphasizing the unique challenges and complexities they present in construction processes. It then assesses the overall level of contemporary construction technologies, identifies the most significant technical bottlenecks, and highlights the differences in construction methods and stricter regulatory requirements compared to conventional high-rise buildings. Subsequently, the article delves into key technical approaches employed during construction—including selecting appropriate structural systems for seamless coordination among processes, employing precision engineering techniques for ultra-high pumping operations and large-scale steel structure hoisting, and optimizing the utilization of vertical transportation equipment and formwork systems. Finally, it summarizes the most common risk types encountered during construction, such as safety incidents during elevated work, operational issues with heavy machinery, quality control challenges at complex joints or deep foundation pits, and impacts from extreme weather conditions or environmental disturbances. To address the aforementioned risks, this article recommends utilizing advanced monitoring technologies and information-based management platforms to establish a comprehensive risk early-warning system. It details how to rigorously control quality in critical construction phases while implementing specialized safety measures. 展开更多
关键词 super high-rise buildings construction technology risk control key technologies safety management
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Discussion on Key Technologies for Quality Control in Civil Construction of Large-Scale Water Conservancy Projects 认领 引用
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作者 ZHANG Jian 《外文科技期刊数据库（文摘版）工程技术》 2026年第2期012-016,共5页
This study focuses specifically on the various challenges encountered in quality control during the civil construction phase of large-scale water conservancy projects. Drawing from actual engineering practices, it pro... This study focuses specifically on the various challenges encountered in quality control during the civil construction phase of large-scale water conservancy projects. Drawing from actual engineering practices, it provides a detailed examination of critical construction procedures and technical methodologies. The report first identifies prominent issues in material selection, construction methods, and safety management within large-scale water conservancy projects, while proposing concrete measures to enhance quality control. By integrating theoretical analysis with practical engineering experience, the report clearly outlines key priorities for quality control at each critical stage and recommends actionable technical solutions—including pre-construction process briefings, comprehensive in-process monitoring, and thorough post-completion inspections—with coordinated implementation plans. Research findings demonstrate that optimizing construction schedules, strengthening on-site supervision, and implementing full-process quality tracking significantly improve overall project quality, reduce potential risks, and ensure long-term reliable operation of water conservancy facilities. The core quality control technologies developed in this study not only provide clear technical guidance for construction but also offer robust support for optimizing construction management workflows, playing a vital role in advancing standardized technical protocols and digital management capabilities. These conclusions hold both theoretical significance and practical value for enhancing construction technologies and accelerating the successful completion of large-scale water conservancy projects. 展开更多
关键词 large-scale water conservancy projects civil engineering construction quality control key technologies construction management
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Integrated Research on Key Technologies and Management Practices in the Construction of Super High-Rise Buildings 认领 引用
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作者 ZHOU Wei 《外文科技期刊数据库（文摘版）工程技术》 2026年第4期110-114,共5页
With the accelerating urbanization process, super high-rise buildings have become a vital component of modern city skylines, requiring construction processes that integrate advanced technologies and sophisticated mana... With the accelerating urbanization process, super high-rise buildings have become a vital component of modern city skylines, requiring construction processes that integrate advanced technologies and sophisticated management approaches. This study focuses on integrating key technologies with management practices in super high-rise construction, aiming to comprehensively analyze challenges encountered during construction and explore effective pathways for synergistic technological and managerial improvements. The introduction section clearly outlines fundamental concepts of super high-rise buildings, current development trends, and technical/management challenges faced during construction, highlighting significant shortcomings in conventional industry methodologies regarding overall planning and collaborative coordination. Subsequently, the study details practical implementation aspects of critical technologies including deep foundation pit support systems, underground structure construction, high-strength concrete and ultra-high-rise pumping techniques, crack control measures, and formwork systems for simultaneous core tube and exterior frame construction. Regarding management integration, it examines organizational coordination mechanisms under general contracting models, comprehensive BIM-based management of schedules, costs, and resources, as well as real-time monitoring and control systems for construction safety and quality risks. Finally, specific solutions are proposed to ensure efficient integration of technology and management from multiple perspectives—including personnel allocation, equipment deployment, material utilization, establishment of digital monitoring and early-warning systems, green construction practices, and environmental protection measures. 展开更多
关键词 super high-rise buildings key construction technologies management integration BIM technology synchronous construction
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Research on the Evaluation System for the Applicability of Key Technologies in Prefabricated Building Construction 认领 引用
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作者 WU Fei 《外文科技期刊数据库（文摘版）工程技术》 2026年第3期134-138,共5页
Prefabricated construction has experienced rapid development in China, making the selection and applicability evaluation of key construction technologies critical to ensuring project quality and economic efficiency. T... Prefabricated construction has experienced rapid development in China, making the selection and applicability evaluation of key construction technologies critical to ensuring project quality and economic efficiency. To address the challenges in evaluating these technologies, extensive research has been conducted to establish a rational and practical assessment framework. This study first systematically categorizes key prefabricated construction technologies, outlines their implementation details, examines current industry developments, and identifies major obstacles encountered during evaluations—clearly demonstrating both the necessity and complexity of such assessments. Subsequently, comprehensive analysis of relevant factors reveals their interrelationships and operational mechanisms, leading to the formulation of a foundational evaluation indicator system. Guided by principles of comprehensiveness, accuracy, and practicality, multiple evaluation metrics were selected and standardized, resulting in a robust and systematic framework with detailed weighting calculations for each indicator. Leveraging fuzzy comprehensive evaluation theory, an integrated assessment model was developed, detailing step-by-step procedures—from data collection and membership degree determination to final evaluation—and corresponding result analysis methodologies. Applying this system to a real-world prefabricated construction case demonstrated the entire evaluation process, while collected feedback validated its effectiveness and practicality, informing actionable recommendations for further optimization. The evaluation system developed in this study provides a solid theoretical foundation and practical operational methods for selecting prefabricated construction technologies and making related decisions, thereby enhancing the management efficiency and overall economic benefits of prefabricated building projects. 展开更多
关键词 Prefabricated construction Key construction technologies Applicability evaluation Evaluation index system Fuzzy comprehensive evaluation
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Research on Key Technologies and Quality Control of Installation and Construction of Building HVAC Equipment 认领 引用
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作者 Xiaowen Zhang 《Journal of Architectural Research and Development》 2025年第6期107-115,共9页
Building HVAC equipment installation is vital for indoor comfort,energy efficiency,and environmental quality.Key technologies like vibration control,pipe network alignment,and thermal stress compensation,along with a ... Building HVAC equipment installation is vital for indoor comfort,energy efficiency,and environmental quality.Key technologies like vibration control,pipe network alignment,and thermal stress compensation,along with a multi-faceted quality standards framework,are crucial.Effective process management,practical application analysis,and the integration of robotics,IoT,and AI enhance quality and efficiency.Sustainable development strategies and lifecycle-oriented quality management are also essential for future progress. 展开更多
关键词 HVAC equipment installation Key technologies Quality control
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Analysis of Key Technologies for On-site Detection of Subgrade and Pavement of Municipal Roads 认领 引用
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作者 Zijian Hu 《Journal of Architectural Research and Development》 2025年第6期90-97,共8页
On-site inspection of municipal road subgrade and pavement is of great significance for ensuring the quality,safety,and durability of urban road infrastructure.This paper analyzes its key technologies,introduces non-d... On-site inspection of municipal road subgrade and pavement is of great significance for ensuring the quality,safety,and durability of urban road infrastructure.This paper analyzes its key technologies,introduces non-destructive testing methods such as ground-penetrating radar and ultrasonic testing,elaborates on the multifaceted roles of inspection in engineering construction as well as relevant standards,explores site challenges,key technologies,and corresponding measures,and points out future research directions in intelligent sensing and predictive maintenance. 展开更多
关键词 Municipal roads Subgrade and pavement inspection Key technologies
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Key technologies for construction of Jinping traffic tunnel with an extremely deep overburden and a high water pressure 认领 引用 被引量：6
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作者 Shougen CHEN Heng ZHANG +1 位作者 Xinrong TAN Liang CHEN 《Journal of Modern Transportation》 2011年第2期94-103,共10页
Jinping traffic tunnel is one of the deepest traffic tunnels in the world with a maximum overburden of 2375 m and the overburden over 73%of its total length is larger than 1500 m.The tunnel is 17.5 km long and designe... Jinping traffic tunnel is one of the deepest traffic tunnels in the world with a maximum overburden of 2375 m and the overburden over 73%of its total length is larger than 1500 m.The tunnel is 17.5 km long and designed to provide a shortcut road between two hydropower stations:Jinping I and Jinping II of the Jinping Hydropower Project,located on Yalong River,Liangshan State,Sichuan Province,China.The tunnel is so deep that building any shafts is impossible.The construction starts from both ends(east and west ends),and the construction length from the west end is 10 km with a blind heading.This paper deals with an overview of this project and analysis of the engineering features,as well as key technologies developed and applied during the construction,including geological prediction,rock burst prevention under a super high in-situ stress,sealing of groundwater with a high pressure and big flow rate,ventilation for a blind heading of 10 km,wet spraying of shotcrete at zones of rock burst and rich water,etc.The application of the new technologies to the construction achieved a high quality tunnel within the contract period. 展开更多
关键词 key technologies Jinping traffic tunnel extremely deep overburden high water pressure
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Rapid shale gas development accelerated by the progress in key technologies:A case study of the Changning-Weiyuan National Shale Gas Demonstration Zone 认领 引用 被引量：5
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作者 Xie Jun 《Natural Gas Industry B》 2018年第4期283-292,共10页
Shale gas resources in the Lower Silurian Longmaxi,southern Sichuan Basin,are huge,where,the geological setting,unlike that in North America,is quite complicated and ground surface infrastructure is poor.Therefore,ada... Shale gas resources in the Lower Silurian Longmaxi,southern Sichuan Basin,are huge,where,the geological setting,unlike that in North America,is quite complicated and ground surface infrastructure is poor.Therefore,adaptable key technologies will be essential to achieve commercial exploitation of shale gas there.In the case study of the Changning-Weiyuan National Shale Gas Demonstration Zone,six series of key techniques were summarized in comprehensive geological evaluation,development optimization,fast and superior drilling of horizontal wells,horizontal-well volumetric fracturing,cluster-well and factory-like operation in well blocks,and highly-efficient and clean exploitation.The above techniques were applied in this field after three rounds of adjustment and optimization,the resulted production rates of shale gas wells were getting higher and higher and the single-well estimated ultimate recovery(EUR)was also rising.Compared with that in the first round,the average EUR of wells in the third round was increased by 128%.In conclusion,the application practices prove that the above series of key techniques with adaptation and flexibility provide a robust technical support for the rapid output of shale gas production in South Sichuan Basin. 展开更多
关键词 Southern Sichuan Basin Early Silurian Shale gas Exploration and development Key technologies Development efficiency Productivity construction
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Key technologies for well drilling and completion in ultra-deep sour gas reservoirs,Yuanba Gasfield,Sichuan Basin 认领 引用
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作者 Xia Jiaxiang Yang Changxue Wang Xingzhong 《Natural Gas Industry B》 2016年第6期607-613,共7页
The Yuanba Gasfield is a large gasfield discovered by Sinopec in the Sichuan Basin in recent years,and another main exploration area for natural gas reserves and production increase after the Puguang Gasfield.The ultr... The Yuanba Gasfield is a large gasfield discovered by Sinopec in the Sichuan Basin in recent years,and another main exploration area for natural gas reserves and production increase after the Puguang Gasfield.The ultra-deep sour gas reservoir in the Yuanba Gasfield is characterized by complicated geologic structure,deep reservoirs and complex drilled formation,especially in the continental deep strata which are highly abrasive with low ROP(rate of penetration)and long drilling period.After many years of drilling practice and technical research,the following six key drilling and completion technologies for this type reservoir are established by introducing new tools and technologies,developing specialized drill bits and optimizing drilling design.They are:casing program optimization technology for ROP increasing and safe well completion;gas drilling technology for shallow continental strata and high-efficiency drilling technology for deep high-abrasion continental strata;drillingfluid support technologies of gaseliquid conversion,ultra-deep highly-deviated wells and horizontal-well lubrication and drag reduction,hole stability control and sour gas contamination prevention;well cementing technologies for gas medium,deep-well long cementing intervals and ultra-high pressure small space;horizontal-well trajectory control technologies for measuring instrument,downhole motor opti-mization and bottom hole assembly design;and liner completion modes and completion string optimization technologies suitable for this gas reservoir.Field application shows that these key technologies are contributive to ROP increase and efficiency improvement of 7000 m deep horizontal wells and to significant operational cycle shortening. 展开更多
关键词 Sichuan Basin Yuanba Gasfield Gas drilling Well drilling and completion Key technologies Sour gas reservoir Ulta-deep Rat of penetration(ROP)
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Smart City: Key Technologies and Practices 认领 引用
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作者 Jianhua Ma Weifeng Lv 《ZTE Communications》 2015年第4期1-2,共2页
Ubiquitous sensors, devices, networks, and information are paving the way to smart cities in which computation and intelligence are pervasive. This enables reliable, relevant intormation and services to he accessible ... Ubiquitous sensors, devices, networks, and information are paving the way to smart cities in which computation and intelligence are pervasive. This enables reliable, relevant intormation and services to he accessible to all people. Smart objects, homes, hospitals, manufacturing, and systerns will eventually be present in every city. 展开更多
关键词 Smart City Key Technologies and Practices high
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Key technologies and applications of intelligent dispatching command for high-speed railway in China 认领 引用 被引量：3
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作者 Shuxin Ding Tao Zhang +2 位作者 Kai Sheng Yuanyuan Chen Zhiming Yuan 《Railway Sciences》 2023年第3期336-346,共11页
Purpose–The intelligent Central Traffic Control(CTC)system plays a vital role in establishing an intelligent high-speed railway(HSR)system.As the core of HSR transportation command,the intelligent CTC system is a new... Purpose–The intelligent Central Traffic Control(CTC)system plays a vital role in establishing an intelligent high-speed railway(HSR)system.As the core of HSR transportation command,the intelligent CTC system is a new HSR dispatching command system that integrates the widely used CTC in China with the practical service requirements of intelligent dispatching.This paper aims to propose key technologies and applications for intelligent dispatching command in HSR in China.Design/methodology/approach–This paper first briefly introduces the functions and configuration of the intelligent CTC system.Some new servers,terminals and interfaces are introduced,which are plan adjustment servererminal,interface for automatic train operation(ATO),interface for Dynamic Monitoring System of Train Control Equipment(DMS),interface for Power Supervisory Control and Data Acquisition(PSCADA),interface for Disaster Monitoring,etc.Findings–The key technologies applied in the intelligent CTC system include automatic adjustment of train operation plans,safety control of train routes and commands,traffic information data platform,integrated simulation of traffic dispatching and ATO function.These technologies have been applied in the Beijing-Zhangjiakou HSR,which commenced operations at the end of 2019.Implementing these key intelligent functions has improved the train dispatching command capacity,ensured the safe operation of intelligent HSR,reduced the labor intensity of dispatching operators and enhanced the intelligence level of China’s dispatching system.Originality/value–This paper provides further challenges and research directions for the intelligent dispatching command of HSR.To achieve the objectives,new measures need to be conducted,including the development of advanced technologies for intelligent dispatching command,coping with new requirements with the development of China’s railway signaling system,the integration of traffic dispatching and train control and the application of AI and data-driven modeling and methods. 展开更多
关键词 High-speed railway Intelligent dispatching command Intelligent centralized traffic control Key technologies and application
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Analysis and innovation of key technologies for autonomous underwater vehicles 认领 引用 被引量：3
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作者 高富东 韩艳艳 +1 位作者 王海东 徐男 《Journal of Central South University》 SCIE EI CAS CSCD 2015年第9期3347-3357,共11页
As the mission needs of the autonomous underwater vehicles(AUV) have become increasingly varied and complex,the AUVs are developing in the direction of systematism, multifunction, and clustering technology, which prom... As the mission needs of the autonomous underwater vehicles(AUV) have become increasingly varied and complex,the AUVs are developing in the direction of systematism, multifunction, and clustering technology, which promotes the progress of key technologies and proposes a series of technical problems. Therefore, it is necessary to make systemic analysis and in-depth study for the progress of AUV's key technologies and innovative applications. The multi-functional mission needs and its key technologies involved in complex sea conditions are pointed out through analyzing the domestic and foreign technical programs, functional characteristics and future development plans. Furthermore, the overall design of a multi-moving state AUV is proposed. Then, technical innovations of the key technologies, such as thrust vector, propeller design, kinematics and dynamics, navigation control, and ambient flow field characteristics, are made, combining with the structural characteristics and motion characteristics of the new multi-moving state AUV. The results verify the good performance of the multi-moving state AUV and provide a theoretical guidance and technical support for the design of new AUV in real complex sea conditions. 展开更多
关键词 autonomous underwater vehicle（AUV） key technology overall design complex sea condition
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Analysis of key technologies and development of integrated digital processing system for cast blasting design 认领 引用 被引量：3
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作者 丁小华 李克民 +1 位作者 肖双双 狐为民 《Journal of Central South University》 SCIE EI CAS CSCD 2015年第3期1037-1044,共8页
Casting blast can greatly reduce the stripping cost and improve the production capacity of opencast coal mines. Key technologies including high bench blasting, inclined hole, millisecond blasting, pre-splitting blasti... Casting blast can greatly reduce the stripping cost and improve the production capacity of opencast coal mines. Key technologies including high bench blasting, inclined hole, millisecond blasting, pre-splitting blasting and casting blast parameters determination which have influence on the effect of casting blast have been researched with the combination of the ballistic theory and experience in mines. The integrated digital processing system of casting blast was developed in order to simplify the design process of casting blast, improve working efficiency and veracity of design result and comprehensively adopt the software programming method and the theory of casting blast. This system has achieved five functions, namely, the 3D visualization graphics management, the intelligent management of geological information, the intelligent design of casting blast, the analysis and prediction of the blasting effect and the automatic output of the design results. Long-term application in opencast coal mines has shown that research results can not only reduce the specific explosive consumption and improve the blasting effect, but also have high value of popularization and application. 展开更多
关键词 opencast coal mine cast blasting key technology digital processing system
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Some Key Technologies of a New-type CNC Curve Grinding Machine 认领 引用 被引量：3
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作者 吴琦 胡德金 《Journal of Shanghai Jiaotong university(Science)》 EI 2007年第1期116-120,共5页
This paper presented a new-type CNC curve grinding machine, in order to conquer the disadvantages of conventional NC curve grinding machine and improve surface quality, dimensional accuracy and machining efficiency. T... This paper presented a new-type CNC curve grinding machine, in order to conquer the disadvantages of conventional NC curve grinding machine and improve surface quality, dimensional accuracy and machining efficiency. The new-type grinder adopts some high and new technologies: ① the normal tracing device could make grinding wheel coincide with the normal direction of the machining points in work piece, and improve surface quality and dimensional accuracy; ② the digital image on-line recognition system could monitor machining process and compensate wheel wear in real time; ③ linear motor drive mechanism could realize the exact adjustment of the grinding head digitally and increase the machining efficiency. The math models of normal tracing and circular tolerance zone were presented. The experimental results show that the new-type CNC curve grinding machine equipped with the three devices mentioned above is easy to realize the precision grinding of any complex curve, and improve surface quality, dimensional accuracy and machining efficiency. 展开更多
关键词 normal tracing image recognition linear motor curve grinding key technology
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Key technologies for the construction of the Xiluodu high arch dam on the Jinsha River in the development of hydropower in western China 认领 引用 被引量：3
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作者 Lu Youmei Fan Qixiang Zhou Shaowu Li Bingfeng Li Wenwei 《Engineering Sciences》 2012年第2期16-28,共13页
Hydropower development in China is concentrated in the country's western regions.Among all the rivers in China,the lower course of the Jinsha River contains the richest hydro-energy resource,and therefore,4 mammot... Hydropower development in China is concentrated in the country's western regions.Among all the rivers in China,the lower course of the Jinsha River contains the richest hydro-energy resource,and therefore,4 mammoth hydropower plants are under construction on this particular section of the river at Wudongde,Baihetan,Xiluodu,and Xiangjiaba.The water-blocking structures of the hydropower facilities at Wudongde,Baihetan and Xiluodu are all arch dams of around 300 m high.In view of changes in the geological conditions at the foundation of the Xiluodu dam on the riverbed after excavation started,the designs of expanding foundation surface excavation and dovetailing the dam body and foundation rock on both upstream and downstream sides were introduced,allowing the arch dam and foundation to fit each other and improving the stress conditions of the dam body and foundation.By dividing the dam body into various concrete sections,the dynamic properties of concrete were adequately adjusted to the distribution of stress in the dam body.In addition,the use of the most optimal concrete material and mixture ratio allowed thermodynamics of concrete to satisfy the requirements of the strength,durability,temperature control and crack prevention of the concrete.Moreover,rigorous temperature control measures were introduced to prevent harmful cracking,thus enhancing the integrity of the arch dam.Furthermore,sophisticated construction machinery,scientific testing methods,and sound construction techniques were employed to ensure the uniformity and reliability of concrete placement.The "Digital Dam" for the Xiluodu project,which is based on the theory of total life cycle,has supplied strong support for construction process control and decision-making. 展开更多
关键词 high arch dam key technologies Xiluodu hydropower development
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Ultra-Wideband RoF System and Its Key Technologies 认领 引用 被引量：1
20
作者 Xu Kun Yin Jie Li Jianqiang 《ZTE Communications》 2009年第3期16-20,共5页
The microwave photonic technology-based Ultra-Wideband(UWB)Radio over Fiber(RoF)system is an important solution to the future low-cost and high-performance ultra-wideband wireless access network.Much research work has... The microwave photonic technology-based Ultra-Wideband(UWB)Radio over Fiber(RoF)system is an important solution to the future low-cost and high-performance ultra-wideband wireless access network.Much research work has been done in this field with abundant results.This article introduces the RoF system that is based on the all-optical vector modulation technology to further enhance signal’s spectrum efficiency;the full-duplex RoF system that is based on the millimeter wave Phase-Shift Keying(PSK)modulation to greatly simplify base station structure and fiber layout;and the RoF system that is based on multi-service mixed transmission to carry the service with both wired signal and several wireless signals.The article also presents an RoF-based high-definition video transmission platform. 展开更多
关键词 RoF over Radio UWB Ultra-Wideband RoF System and Its Key Technologies DAPSK
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