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Visualization Analysis of Literature on Building Photovoltaic Technology Based on CiteSpace
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作者 WANG Ling LI Haiying 《Journal of Landscape Research》 2024年第5期46-49,55,共5页
With the proposal of the double carbon target,the task of energy saving and emission reduction of buildings has become more arduous.The application of building photovoltaic technology is identified as a significant br... With the proposal of the double carbon target,the task of energy saving and emission reduction of buildings has become more arduous.The application of building photovoltaic technology is identified as a significant breakthrough to address this challenge.In this paper,the visual analysis and interpretation of literature on building photovoltaic(PV)technology were conducted by using the Cite Space analysis tool based on a review of Chinese and international literature databases.Meanwhile,global research on BIPV technology was summarized and compared.This paper provides ideas for the future application of building photovoltaic technology by constructing a knowledge map for the application of building photovoltaic technology to help the construction of a low-carbon society. 展开更多
关键词 Building photovoltaic technology Cite Space Visualized analysis
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Digital Application Objectives and Benefit Analysis of BIM Technology in Large-Scale Comprehensive Development Projects
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作者 Chunhui Yang 《Journal of World Architecture》 2024年第5期24-28,共5页
This paper discusses the digital application and benefit analysis of building information model(BIM)technology in the large-scale comprehensive development project of the Guangxi headquarters base.The project covers a... This paper discusses the digital application and benefit analysis of building information model(BIM)technology in the large-scale comprehensive development project of the Guangxi headquarters base.The project covers a total area of 92,100 square meters,with a total construction area of 379,700 square meters,including a variety of architectural forms.Through three-dimensional modeling and simulation analysis,BIM technology significantly enhances the design quality and efficiency,shortens the design cycle by about 20%,and promotes the collaboration and integration of project management,improving the management efficiency by about 25%.During the construction phase,the collision detection and four-dimensional visual management functions of BIM technology have improved construction efficiency by about 15%and saved the cost by about 10%.In addition,BIM technology has promoted green building and sustainable development,achieved the dual improvement of technical and economic indicators and social and economic benefits,set an example for enterprises in digital transformation,and opened up new market businesses. 展开更多
关键词 Building information model technology Large-scale comprehensive development Digital application Benefit analysis
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Analysis of Low Fertility Rates in Advanced Economies
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作者 LI Chenkai 《Management Studies》 2024年第4期252-254,共3页
In economics,opportunity cost means the maximum value of choosing one behavior over others in the situation where resources are limited(Parkin,2016).In the process of making reproductive decision,opportunity cost reve... In economics,opportunity cost means the maximum value of choosing one behavior over others in the situation where resources are limited(Parkin,2016).In the process of making reproductive decision,opportunity cost reveals the trade-off between time,resources,and economic benefits that individuals face when choosing to have children or not.During this process,the technological changes make the paths of career development diverse and rapidly changing,remarkably increasing the opportunity cost of childbirth and parenting.This leads to individuals more inclined to postpone or reduce childbirth when balancing their careers and families,thereby resulting in low fertility rates in developed economies. 展开更多
关键词 low fertility advanced economies technological changes
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Path Analysis of High-Quality Development of Regional Economy The Role and Impact of Industrial Policies
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作者 Nan Zhou 《Proceedings of Business and Economic Studies》 2024年第2期198-204,共7页
With China’s economic development entering a new normal,high-quality regional economic development has become an important goal of current economic development.As one of the important means to promote high-quality de... With China’s economic development entering a new normal,high-quality regional economic development has become an important goal of current economic development.As one of the important means to promote high-quality development of the regional economy,industrial policies are increasingly receiving attention in terms of their role and impact.This article mainly conducts an in-depth analysis of the mechanism and impact path of industrial policies,exploring the role and impact of industrial policies in promoting high-quality regional economic development.Firstly,industrial policies play an important role in promoting high-quality regional economic development.Secondly,the impact path of industrial policies on the high-quality development of the regional economy mainly includes promoting industrial structure upgrading,promoting technological innovation,guiding resource allocation,and enhancing enterprise competitiveness.Therefore,it is necessary to increase research and practice on industrial policies,continuously optimize policy measures,and promote high-quality development of the regional economy. 展开更多
关键词 Industrial policy Regional economy High-quality development Path analysis
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Thermodynamic and Equilibrium Composition Analysis of Using Iron Oxide as an Oxygen Carrier in Nonflame Combustion Technology 被引量:8
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作者 Jiayu Xin Hua Wang Fang He Zhimin Zhang 《Journal of Natural Gas Chemistry》 EI CAS CSCD 2005年第4期248-253,共6页
Nonflame combustion technology (NFCT) is a harmonious energy utilization technology. There are not environmental-unfriendly gases such as NOx, CO2 discharged in the whole combustion process. Combustion processes rea... Nonflame combustion technology (NFCT) is a harmonious energy utilization technology. There are not environmental-unfriendly gases such as NOx, CO2 discharged in the whole combustion process. Combustion processes realizes zero emission through this technology. Fe2O3 is involved as oxygen carrier, is examined thermodynamically, and the thermodynamic data of the redox reactions are calculated. Using the criteria of minimizing the Gibbs free energy, the equilibrium composition was investigated. The equilibrium analysis shows that producing complete oxidized resultants must have high molar ratio of Fe2O3/CH4. If quantity of Fe2O3 is not sufficient, more partial oxidized products such as CO, H2, even C will be produced. 展开更多
关键词 nonflame combustion technology thermal cyclic carrier molten salt equilibrium composition thermodynamic analysis
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Analysis of Grain Storage Security Countermeasures under the New Normal Condition with "Grain Storage Technology" as the Core 被引量:6
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作者 Xingang ZHAO Shengzhong DONG +3 位作者 Hongwei MA Zhaohuan WEN Xiufeng SHAN Peng MAO 《Agricultural Science & Technology》 CAS 2017年第10期1971-1974,共4页
Grain storage security is big issue related to national economy and the people's livelihood, as well as one of the most important strategic requirements in China. Under the background of grain supply-side structural ... Grain storage security is big issue related to national economy and the people's livelihood, as well as one of the most important strategic requirements in China. Under the background of grain supply-side structural reform, this paper analyzed the grain storage security countermeasures under the new normal conditions with "grain storage technology", one of the national grain security strategies of China during the 13th Five-year Plan, as the guiding ideology, from the perspectives of scientific technologies, policy supports, government supports and talent construction, so as to provide supports for the storage enterprises with vulnerable technological links. In addition, the food security issues discussed in this paper could be a helping hand in improving people's living quality, enhancing grain storage ecological quality, promoting grain green storage quality security, and be of important and profound strategic significance to enhance the macro-control capability of the government, maintain social stability and people's health. 展开更多
关键词 Grain storage technology Grain storage security Countermeasure analysis
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Analysis of the efficiency of regional tourism based on DEA window technology 被引量:1
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作者 Bianfang Li 《Chinese Journal of Population,Resources and Environment》 2014年第4期354-360,共7页
In this study,data envelopment analysis is used to measure the tourism efficiency of 31 regions in China according to the panel data from the year 2000 to 2010.The conclusion shows that the efficiency of tourism indus... In this study,data envelopment analysis is used to measure the tourism efficiency of 31 regions in China according to the panel data from the year 2000 to 2010.The conclusion shows that the efficiency of tourism industry is on the rise as a whole,while the diversity of every region becomes more and more apparent.High efficiency appears in east regions like Beijing,Tianjin and Shanghai where the economy is developed,and regions like Jilin,Sichuan and Gansu in the midland and west show low efficiency. 展开更多
关键词 regional TOURISM ECONOMICS EFFICIENCY DEA EFFICIENCY evaluation WINDOW analysis technology
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Bibliometrics and visual analysis for clinical research on intervention of traditional Chinese medicine nursing technology on rheumatoid arthritis 被引量:3
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作者 Ling TANG Jianni QU +7 位作者 Hong GUO Mei WANG Nini XU Xiaoyan BAI Xueyan FAN Zhixuan XU Yihui TIAN Fen ZHOU 《Journal of Integrative Nursing》 2022年第1期20-25,共6页
Objective:The objective of this study is to explore the current situation,clinical research hot spots,and trends of traditional Chinese medicine(TCM)nursing technology in rheumatoid arthritis(RA),to draw a panorama of... Objective:The objective of this study is to explore the current situation,clinical research hot spots,and trends of traditional Chinese medicine(TCM)nursing technology in rheumatoid arthritis(RA),to draw a panorama of clinical research,to provide the basis and clues for subsequent high-level evidence integration and further in-depth research.Materials and Methods:Seven databases including China National Knowledge Infrastructure,Chinese Scientific Journal Database(VIP),Wanfang Database,Chinese Biomedical Literature Database(Sino-Med),PubMed,Embase,and the Cochrane Library were searched.The bibliometric method and visualization software CiteSpace were used to conduct a multi-dimensional analysis of the included literature.Results:A total of 805 pieces of literature were included(of them,one was written in German and four in English),and the number of published literature showed an increasing trend year by year.There were only 30(3.73%)pieces of literature published in nursing journals.The hot spots of the co-occurrence map were concentrated in:(1)the nursing of fumigation in RA;(2)the efficacy evaluation of TCM nursing technology on pain,joint malformation,and joint dysfunction caused by RA.The included literature themes focused on five TCM technologies:fumigation,moxibustion,acupoint patching,acupoint injection,and Chinese herbal soaking.The beginning year and strength in TCM fumigation were 2012 and 5.2,and those in moxibustion were 2011 and 3.38.Conclusion:The related studies are on the rise.It has entered the field of international readers with clear research hot spots.However,there are still shortcomings such as little literature published in Chinese nursing core journals,few non-Chinese-related documents,and a lack of international exchanges and cooperation.The current research hot spots in this field are TCM fumigation,and the cutting-edge trend of future research may be fumigation and moxibustion technology.It is suggested that further research can focus on evidence integration and original research on the self-optimization of these two techniques. 展开更多
关键词 Literature metrology rheumatoid arthritis traditional Chinese medicine nursing technology visual analysis Wangbi
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Forecasting promising technology using analysis of patent information:Focused on next generation mobile communications 被引量:8
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作者 CHOI Seung-Wook YOU Yen-Yoo NA Kwan-Sik 《Journal of Central South University》 SCIE EI CAS 2014年第11期4303-4310,共8页
In order to forecast promising technologies in the field of next generation mobile communication, various patent indicators were analyzed such as citation per patent, patent family information, patent share, increase ... In order to forecast promising technologies in the field of next generation mobile communication, various patent indicators were analyzed such as citation per patent, patent family information, patent share, increase rate, and patent activity. These indicators were quantified into several indexes and then integrated into an evaluation score to provide promising technologies. As a result of the suggested patent analysis, four technologies out of twenty two in details classification were selected, which showed outstanding technology competitiveness, high patent share and increasing rates as well as high recent-patent-ratios and triad-patent-family-ratios. Each of the selected technologies scored more than 10 points in total, and the following four technologies were suggested as promising ones in the field of next generation mobile communication: 1) 3GPP based mobile communication, 2) beyond 4G mobile communication, 3) IEEE 802.16 based mobile communication, which are in medium classification of broadband mobile communication system, and 4) testing/certification system of mobile communication, which is in medium classification of mobile communication testing/certification system. 展开更多
关键词 next generation mobile communication promising technology forecasting patent information patent analysis patent indicators
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Meru University of Science and Technology Research Ethics Review System: A SWOT Analysis 被引量:1
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作者 Joses Muthuri Kirigia Rosenabi Deborah Karimi Muthuri Newton Gitonga 《Journal of Biosciences and Medicines》 2018年第12期26-44,共19页
The objectives of this article are as follows: 1) to propose a university research ethics system framework, 2) to provide a brief anatomy of the Meru University of Science and Technology (MUST) Institutional Research ... The objectives of this article are as follows: 1) to propose a university research ethics system framework, 2) to provide a brief anatomy of the Meru University of Science and Technology (MUST) Institutional Research Ethics Review Committee (MIRERC), 3) to perform a SWOT (Strengths, Weaknesses, Opportunities, and Threats) analysis of MIRERC, and 4) to make recommendations for improving its performance. The 13-member multi-disciplinary MIRERC was established in April 2017 to provide effective ethical oversight of research undertaken by the University’s scholarly community. Strengths of the MUST research ethics review system include a functional MIRERC, a pertinent national law and ethical guidelines, an Innovation and Enterprise Centre that could house a dedicated MIRERC Secretariat, and a supportive University Management Board. The weaknesses include lack of graduate schools to assure scientific rigor of proposals before submission to the MIRERC, lack of research ethics training in most school’s curricula, absence of a dedicated MIRERC Secretariat, undergraduate research proposals being not ethically reviewed, dearth of faculty trained in research ethics, and lack of an operating budget for MIRERC work. The opportunities include existence of about 22 accredited Institutional Research Ethics Review Committees (IRERC) in Kenya, existence of international standards and operational guidance for ethics review, availability of guidelines and codes of best ethical practices in research, existence of a free automated platform called Research for Health Innovation Organizer (RHInnO) Ethics for managing the ethics review process, and availability of external resources for strengthening IRERCs. In order to improve the performance and sustainability of the MUST research ethics system, there is need to include research ethics training in all undergraduate and post-graduate curricula, create a dynamic database of potential research ethics reviewers, allocate a percentage of the annual MUST research budget for MIRERC operations, charge a graduated fee for proposal ethics review, require all students’ and faculties’ internal and external research proposals be cleared by the MIRERC, and use the RHInnO Ethics platform to manage the ethics review process. 展开更多
关键词 Meru UNIVERSITY of Science and technology Kenya INSTITUTIONAL RESEARCH ETHICS REVIEW Committee RESEARCH ETHICS SYSTEM SWOTs analysis
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An SAO-based approach to technology evolution analysis using patent information: Case study—graphene sensors 被引量:11
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作者 Zhengyin HU Shu FANG +3 位作者 Ling WEI Yi WEN Xian ZHANG Min WANG 《Chinese Journal of Library and Information Science》 2015年第3期62-75,共14页
Purpose: This paper introduces an approach to technology evolution analysis using patent information based on Subject-Action-Object(SAO) structures.Design/methodology/approach: First, SAO structures were extracted fro... Purpose: This paper introduces an approach to technology evolution analysis using patent information based on Subject-Action-Object(SAO) structures.Design/methodology/approach: First, SAO structures were extracted from patent documents and were cleaned. Second, several dimension-reduction techniques were used to generate technology topics. Then, the hierarchical relationships between technology topics were calculated based on patent clustering. Finally, technology evolution maps were drawn by adding a timeline.Findings: This approach can reveal technology evolution processes from multiple perspectives than other approaches.Research limitations: The semantic annotation of an SAO type is not very accurate and the semantic types of technology topics need to be enriched.Practical implications: The approach can be applied to draw technology evolution maps using different types of technology topics such as problem or solution.Originality/value: This approach offers an analytical dimension and more details than existing techniques, and it helps identify fundamental and emerging technologies more accurately and comprehensively. 展开更多
关键词 technology evolution Patent analysis SAO Feature d
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Research on technology cluster evolution of global MEMS sensors based on patent co-occurrence analysis 被引量:1
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作者 Liang Qinqin 《High Technology Letters》 EI CAS 2019年第2期197-206,共10页
At present, microelectro mechanical systems (MEMS) sensors have gradually replaced traditional mechanical sensors and are applied to several fields. Many developed countries pay high attention to technological innovat... At present, microelectro mechanical systems (MEMS) sensors have gradually replaced traditional mechanical sensors and are applied to several fields. Many developed countries pay high attention to technological innovation of MEMS sensors, and have applied a large number of patents since 2000. In this study, the patents of MEMS sensor from 2000 to 2015 are researched, the patents data is collected from Derwent Innovation Index (DII), and the method of co-classification analysis is used to investigate the technology cluster evolution of MEMS sensors. Results show that the technology diffusion occurrs in each technical field and the technology relevance between different technical fields is changed over time. On the whole, the evolution process of MEMS sensor is the manufacture and material of sensor chip, the electronic components and measuring function, the computing and control technology, and applications to biochemical field and communication. 展开更多
关键词 co-classification analysis technology cluster microelectro mechanical system(MEMS) patent analysis
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Research of Water Quality Analysis,Treatment and Reuse Technology for Rainwater on the North University Campus 被引量:1
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作者 Chen Shufang Shi Jingwei +1 位作者 Shao Yanjun Tu Chao 《Meteorological and Environmental Research》 CAS 2018年第1期62-65,共4页
The pollution situation of different underlying surface and the change rule of each water quality index were researched,on the basis of rainwater quality monitoring by different approaches in a university campus. The ... The pollution situation of different underlying surface and the change rule of each water quality index were researched,on the basis of rainwater quality monitoring by different approaches in a university campus. The results showed that due to some factors,such as the underlying surface material pollution,road materials,road surface pollution condition and surrounding atmospheric environment quality,the pollution of different underlying surface rainwater would be different. Main pollutants of rainwater runoff in the city campus area were such as COD,SS,NH;-N,TP,etc. Ultimately,along with the increase of accumulated rainfall,the pollutants tended to gradually decrease. The road rain pollution was more serious than roof runoff pollution and the early rain pollution was serious,but the late rain water quality was much better. According to the rainwater conditions,subsequent rainwater recycling technology and processing technology were determined as a way to alleviate the problem of water shortage and water pollution. 展开更多
关键词 NORTH Rainwater on campus Water quality analysis Variation rule Reuse technology
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An Analysis Model of Sports Human Body Based on Computer Vision Tracking Technology 被引量:3
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作者 Mingzhu Yuan 《International Journal of Technology Management》 2017年第4期71-73,共3页
This paper proposes the analysis model of sports human body based on computer vision tracking technology. Visual target tracking is an important research field of the computer vision, motion trajectory and it can prov... This paper proposes the analysis model of sports human body based on computer vision tracking technology. Visual target tracking is an important research field of the computer vision, motion trajectory and it can provide not only the goal, to provide the initial data movement analysis, scene understanding, behavior or the event detection in intelligent surveillance, human-computer interaction, robot visual navigation and motion recognition based on field has a broad application prospect. For this reason, it is possible to consider the use of a large number of unlabeled samples to assist the training classifier to improve its performance. This type of machine learning method using both labeled and that unlabeled samples is called the semi-supervised learning. This paper proposes the novel idea of the related research topics to propose the new perspective of the model that will be later give us the novel idea of making it efficient for further development of sport science. 展开更多
关键词 Human Body analysis Model Computer Vision Tracking technology
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Analysis of Noise at Coal Face by Fully-Mechanized Coal Winning Technology 被引量:1
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作者 刘照鹏 《Journal of China University of Mining and Technology》 2003年第1期113-116,共4页
The noise level of coal face by full-mechanized coal winning technology was measured in a coal mine. And then it was analyzed and evaluated using environment science, ergonomics and fussy mathematics analysis. Basis o... The noise level of coal face by full-mechanized coal winning technology was measured in a coal mine. And then it was analyzed and evaluated using environment science, ergonomics and fussy mathematics analysis. Basis of the statistics and analysis of the measured noise level some measures, such as applying the new materials and improving the construction of the equipment, were carried out. The resuts show that they can reduce the noise level, improve the working environment and enhance the work efficiency. 展开更多
关键词 noise coal face fully-mechanized coal winning technology analysis
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Key Technology Research and Exemplification Analysis on Investigation and Assessment of Geoheritages and Geopark Construction
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作者 Guoqing Zhang~(1,2),Mingzhong Tian~2,Yuhuan Geng~2,Jing Guo~2 1.Faculty of Geosciences and Survey Engineering,East China Institute of Technology,Fuzhou 344000,China. 2.School of the Earth Sciences and Resources,China University of Goesciences(Beijing),Beijing 100083,China 《地学前缘》 EI CAS CSCD 北大核心 2009年第S1期291-291,共1页
In recent years,great efforts have been made on the geoparks’ application and construction,but there is a shortage of research on the theories and methodologies of geoheritage investigation and assessment. Based on t... In recent years,great efforts have been made on the geoparks’ application and construction,but there is a shortage of research on the theories and methodologies of geoheritage investigation and assessment. Based on the summaries of having finished geoheritage investtigation and assessment and geopark construction projects,some key technologic methods analyzed in this paper are as follows:(1) 展开更多
关键词 GEOHERITAGE investigation and assessment GEOPARK KEY technology EXEMPLIFICATION analysis
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3D Seismic Technology Applications to the Analysis of Sedimentary Basins
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作者 Xiangquan Li,Tao Jiang Faculty of Marine Science and Engineering,Resource Institute,China University of Geosciences(Wuhan),Wuhan 430074,China. 《地学前缘》 EI CAS CSCD 北大核心 2009年第S1期202-202,共1页
The recent advances of 3D seismic technique applied in geological study of sedimentary basin analysis were reviewed.The achievements in the study of the sedimentology,structural analysis, fluid-rock interaction and ig... The recent advances of 3D seismic technique applied in geological study of sedimentary basin analysis were reviewed.The achievements in the study of the sedimentology,structural analysis, fluid-rock interaction and igneous geology were summarized.Because 3D seismic resolution and interpretation technology are enhanced surprisingly。 展开更多
关键词 3D SEISMIC technology BASIN analysis fluid-rock interactions SEISMIC STRATIGRAPHY structural analysis IGNEOUS GEOLOGY
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An Analysis of the Influence of Chinese Agriculture on National Economy and the Macroeconomic Effects
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作者 Ming GE Suping ZHAO 《Asian Agricultural Research》 2015年第11期1-4,11,共5页
As a basic industry,agriculture has a far-reaching impact on national economy. Based on input-output tables of China in 2005 and2010,this paper gives a deep insight into the relationship between agriculture and nation... As a basic industry,agriculture has a far-reaching impact on national economy. Based on input-output tables of China in 2005 and2010,this paper gives a deep insight into the relationship between agriculture and national economy and its macroeconomic effects by the methods of input-output analysis,industrial correlation and macroeconomic effect analysis. The results show that the agricultural development is highly dependent on the national economy,but makes low contribution; agriculture contributes to promoting employment and improving the structure of national income distribution; despite the government's tax incentive,the agricultural equipments are updated slowly,and the corporate profits are at low level; agricultural export effect is far below the average industry level,but the import effect increases over the years,and final products are often used for domestic consumption. Finally,we set forth recommendations for improving the development of agriculture and national economy. 展开更多
关键词 Agricultural industries National economy MACROECONOMIC effects INPUT-OUTPUT analysis
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Analysis on the Influence of Computer Technology on Agricultural Development in China
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作者 Xiaochen HUANG Qi HUANG 《Asian Agricultural Research》 2016年第12期21-23,共3页
Wide application of the computer-leading information technology is promoting tremendous changes in agricultural management,production,sales and agricultural science and technology,and education,showing broad applicati... Wide application of the computer-leading information technology is promoting tremendous changes in agricultural management,production,sales and agricultural science and technology,and education,showing broad application prospects,bringing unprecedented development opportunities to the information technology industry,greatly driving agricultural modernization,but also bringing challenges to agricultural science and technology workers to meet the agricultural information technology revolution. Information technology,as a kind of resource,is manifesting its functions in agricultural production and operation of agricultural products,and farmers are also paying more attention to the use of information technology to guide production and sales. China should take full advantage of the computer-centered information resources,and take the road of agricultural modernization and information to develop agriculture. 展开更多
关键词 COMPUTER Information technology Agricultural development analysis of influence
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Stability analysis and control technology of gob‑side entry retaining with double roadways by flling with high‑water material in gently inclined coal seam
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作者 Shengrong Xie En Wang +3 位作者 Dongdong Chen Hui Li Zaisheng Jiang Hongzeng Yang 《International Journal of Coal Science & Technology》 EI CAS CSCD 2022年第4期147-164,共18页
To ameliorate the defects of insufcient support resistance of traditional roadside flling bodies for gob-side entry retaining(GER),overcome the inability to adapt to the deformation of surrounding rock,and isolate the... To ameliorate the defects of insufcient support resistance of traditional roadside flling bodies for gob-side entry retaining(GER),overcome the inability to adapt to the deformation of surrounding rock,and isolate the goaf efectively,a new type of high-water material as a roadside flling body for GER technology with double roadways was proposed.The instability analysis and control technology of GER with double roadways by flling high-water material into a gently inclined coal seam were studied.The basic mechanical properties of the new high-water material were investigated through laboratory experiments,and their main advantages were identifed.The reasonable width of the roadside flling wall of a high-water material was obtained by combining ground pressure observation and theoretical calculations.The distribution characteristics of the stress and plastic zone of surrounding rock of GER after being stabilized by the disturbance of the working face were studied using numerical simulations,and the failure range of GER by flling with high-water material was revealed.Based on this,a coupling control technology of anchor cables and bolts+single props+metal mesh+anchor bolts is proposed.Through the coupling methods of arranging borehole peeping and observing the convergences of surrounding rock,the results demonstrate that GER with double roadways by flling with a 1.8-m-wide high-water material has a good control efect.The above research will play an active role in promoting the application of high-water materials in GER roadside flling. 展开更多
关键词 High-water material Gob-side entry retaining with double roadways Stability analysis Gently inclined coal seam Control technology
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