期刊文献+
共找到18篇文章
< 1 >
每页显示 20 50 100
Joint Bearing Mechanism of Coal Pillar and Backfilling Body in Roadway Backfilling Mining Technology 被引量:2
1
作者 Zhengzheng Cao Ping Xu +3 位作者 Zhenhua Li Minxia Zhang Yu Zhao Wenlong Shen 《Computers, Materials & Continua》 SCIE EI 2018年第2期137-159,共23页
In the traditional mining technology,the coal resources trapped beneath surface buildings,railways,and water bodies cannot be mined massively,thereby causing the lower coal recovery and dynamic disasters.In order to s... In the traditional mining technology,the coal resources trapped beneath surface buildings,railways,and water bodies cannot be mined massively,thereby causing the lower coal recovery and dynamic disasters.In order to solve the aforementioned problems,the roadway backfilling mining technology is developed and the joint bearing mechanism of coal pillar and backfilling body is presented in this paper.The mechanical model of bearing system of coal pillar and backfilling body is established,by analyzing the basic characteristics of overlying strata deformation in roadway backfilling mining technology.According to the Ritz method in energy variation principle,the elastic solution expression of coal pillar deformation is deduced in roadway backfilling mining technology.Based on elastic-viscoelastic correspondence principle,combining with the burgers rheological constitutive model and Laplace transform theory,the viscoelastic solution expression of coal pillar deformation is obtained in roadway backfilling mining technology.By analyzing the compressive mechanical property of backfilling body,the time formula required for coal pillar and backfilling body to play the joint bearing function in roadway backfilling mining technology is obtained.The example analysis indicates that the time is 140 days.The results can be treated as an important basis for theoretical research and process design in roadway backfilling mining technology. 展开更多
关键词 Roadway backfilling mining technology coal pillar backfilling body joint bearing mechanism energy variation principle
下载PDF
Hydraulic metal structure health diagnosis based on data mining technology 被引量:3
2
作者 Guang-ming Yang Xiao Feng Kun Yang 《Water Science and Engineering》 EI CAS CSCD 2015年第2期158-163,共6页
In conjunction with association rules for data mining, the connections between testing indices and strong and weak association rules were determined, and new derivative rules were obtained by further reasoning. Associ... In conjunction with association rules for data mining, the connections between testing indices and strong and weak association rules were determined, and new derivative rules were obtained by further reasoning. Association rules were used to analyze correlation and check consistency between indices. This study shows that the judgment obtained by weak association rules or non-association rules is more accurate and more credible than that obtained by strong association rules. When the testing grades of two indices in the weak association rules are inconsistent, the testing grades of indices are more likely to be erroneous, and the mistakes are often caused by human factors. Clustering data mining technology was used to analyze the reliability of a diagnosis, or to perform health diagnosis directly. Analysis showed that the clustering results are related to the indices selected, and that if the indices selected are more significant, the characteristics of clustering results are also more significant, and the analysis or diagnosis is more credible. The indices and diagnosis analysis function produced by this study provide a necessary theoretical foundation and new ideas for the development of hydraulic metal structure health diagnosis technology. 展开更多
关键词 Hydraulic metal structure Health diagnosis Data mining technology Clustering model Association rule
下载PDF
The analysis of application of data mining technology in the system of intrusion detection 被引量:2
3
作者 Liu Zhijun Pu Xiaowei 《International Journal of Technology Management》 2014年第6期4-5,共2页
With the economic development and the popularity of application of electronic computer, electronic commerce has rapid development. More and more commerce and key business has been carried on the lnternet because Inter... With the economic development and the popularity of application of electronic computer, electronic commerce has rapid development. More and more commerce and key business has been carried on the lnternet because Internet has the features of interaction, openness, sharing and so on. However, during the daily commerce, people worry about the security of the network system. So a new technology which can detect the unusual behavior in time has been invented in order to protect the security of network system. The system of intrusion detection needs a lot of new technology to protect the data of the network system. The application of data mining technology in the system of intrusion detection can provide a better assistant to the users to analyze the data and improve the accuracy of the checking system. 展开更多
关键词 The system of intrusion detection data mining technology APPLICATION
下载PDF
Analysis on The Application of Data Mining Technology in Computer Network Virus Defense
4
作者 Sun Hujun 《International Journal of Technology Management》 2017年第3期49-51,共3页
With the rapid development of computer network,the society has entered the information and digital era,it plays an important role in speeding up the pace of social development and providing more convenient services fo... With the rapid development of computer network,the society has entered the information and digital era,it plays an important role in speeding up the pace of social development and providing more convenient services for people.However, the security problem of computer network is becoming more and more serious. All kinds of network viruses pose a great threat to the security of computer network.As the most advanced data processing technology currently, data mining technology can effectively resist the invasion of network virus to computer system,and plays an important role in improving the security of the computer network.This paper starts with the concept of data mining technology and the characteristics of computer network virus,and makes an in-depth analysis on the specific application of data mining technology in the computer network virus defense. 展开更多
关键词 data mining technology computer network virus CHARACTERISTIC DEFENSE APPLICATION
下载PDF
Development of Mining Technology and Equipment for Seafloor Massive Sulfide Deposits 被引量:20
5
作者 LIU Shaojun HU Jianhua +2 位作者 ZHANG Ruiqiang DAI Yu YANG Hengling 《Chinese Journal of Mechanical Engineering》 SCIE EI CAS CSCD 2016年第5期863-870,共8页
Seafloor massive sulfide(SMS) deposits which consist of Au, Ag, Cu, and other metal elements, have been a target of commercial mining in recent decades. The demand for established and reliable commercial mining syst... Seafloor massive sulfide(SMS) deposits which consist of Au, Ag, Cu, and other metal elements, have been a target of commercial mining in recent decades. The demand for established and reliable commercial mining system for SMS deposits is increasing within the marine mining industry. The current status and progress of mining technology and equipment for SMS deposits are introduced. First, the mining technology and other recent developments of SMS deposits are comprehensively explained and analyzed. The seafloor production tools manufactured by Nautilus Minerals and similar mining tools from Japan for SMS deposits are compared and discussed in turn. Second, SMS deposit mining technology research being conducted in China is described, and a new SMS deposits mining tool is designed according to the environmental requirement. Finally, some new trends of mining technology of SMS deposits are summarized and analyzed. All of these conclusions and results have reference value and guiding significance for the research of SMS deposit mining in China. 展开更多
关键词 deep sea mining equipment mining key technology seafloor massive sulfide deposits new technology
下载PDF
“3-Section” Technology of Full-Dimension Mining in Flat Thick-Seam
6
作者 赵景礼 《Journal of China University of Mining and Technology》 2004年第1期13-16,共4页
To raise coal recovery ratio and solve the key problem of full-dimension mining, a new “3-section” technology of full-dimension mining is put forward in flat thick-seam according to the theory and mining practice. T... To raise coal recovery ratio and solve the key problem of full-dimension mining, a new “3-section” technology of full-dimension mining is put forward in flat thick-seam according to the theory and mining practice. This technology is proved to be rational and feasible in rodway layout system of stagger arrangement. 展开更多
关键词 thick seam stagger arrangement “3-section” mining technology
下载PDF
Failure mechanism and control technology of longwall coalface in large-cutting-height mining method 被引量:8
7
作者 Wang Jiachen Yang Shengli Kong Dezhong 《International Journal of Mining Science and Technology》 SCIE EI CSCD 2016年第1期111-118,共8页
The stability control of longwall coalface is the key technology of large-cutting-height mining method.Therefore,a systematic study of the factors that affect coalface stability and its control technology is required ... The stability control of longwall coalface is the key technology of large-cutting-height mining method.Therefore,a systematic study of the factors that affect coalface stability and its control technology is required in the development of large-cutting-height mining method in China. After the practical field observation and years of study,it was found that the more than 95% of failures in coalface are shear failure. The shear failure analysis model of coalface has been established,that can perform systematic study among factors such as mining height,coal mass strength,roof load,support resistance,and face flipper protecting plate horizontal force. Meanwhile,sensitivity analysis of factors influencing coalface stability showed that improving support capacity,cohesion of coal mass and decreasing roof load of coalface are the key to improve coalface stability. Numerical simulation of the factors affecting coalface stability has been performed using UDEC software and the results are consistent with the theoretical analysis. The coalface reinforcement technology of large-cutting-height mining method using the grouting combined with coir rope is presented. Laboratory tests have been carried out to verify its reinforcement effect and practical application has been implemented in several coal mines with good results.It has now become the main technology to reduce longwall coalface failure of large-cutting-height mining method. 展开更多
关键词 Large-cutting-height mining methodLongwall coalfaceShear failureCoalface stability control technology
下载PDF
Fractal characterization for the mining crack evolution process of overlying strata based on microseismic monitoring technology 被引量:4
8
作者 Liu Chao Xue Junhu +1 位作者 Yu Guofeng Cheng Xiaoyu 《International Journal of Mining Science and Technology》 SCIE EI CSCD 2016年第2期295-299,共5页
In order to study the evolution laws during the development process of the coal face overburden rock mining-induced fissure,we studied the process of evolution of overburden rock mining-induced fissures and dynamicall... In order to study the evolution laws during the development process of the coal face overburden rock mining-induced fissure,we studied the process of evolution of overburden rock mining-induced fissures and dynamically quantitatively described its fractal laws,based on the high-precision microseismic monitoring method and the nonlinear Fractal Geometry Theory.The results show that:the overburden rock mining-induced fissure fractal dimension experiences two periodic change processes with the coal face advance,namely a Small→ Big→ Small process,which tends to be stable;the functional relationship between the extraction step distance and the overburden rock mining-induced fissure fractal dimension is a cubic curve.The results suggest that the fractal dimension reflects the evolution characteristics of the overburden rock mining-induced fissure,which can be used as an evaluation index of the stability of the overburden rock strata,and it provides theoretical guidance for stability analysis of the overburden rock strata,goaf roof control and the support movements in the mining face. 展开更多
关键词 Microseismic monitoring technology Fractal characterization mining crack Evolution law Overlying strata
下载PDF
《International Journal of Mining Science and Technology》 Volume 22 General Contents of 2012 Issues 被引量:1
9
《International Journal of Mining Science and Technology》 SCIE EI 2012年第6期899-906,共8页
关键词 Volume 22 General Contents of 2012 Issues International Journal of mining Science and technology
下载PDF
Longwall mining under gateroads and gobs of abandoned small mine 被引量:1
10
作者 Li Yang Zhu Enguang +3 位作者 Zhang Kangning Li Minghao Wang Jiaxing Li Chengkun 《International Journal of Mining Science and Technology》 SCIE EI CSCD 2017年第1期145-152,共8页
Due to the use of outdated mining technology or room and pillar mining process in small coal mines, the coal recovery ratio is only 10–25%. In many regions of China, the damage area caused by the small coal mines amo... Due to the use of outdated mining technology or room and pillar mining process in small coal mines, the coal recovery ratio is only 10–25%. In many regions of China, the damage area caused by the small coal mines amounted to nearly one hundred square kilometers. Therefore, special mining techniques must be taken to reclaim the wasted resource in disturbed coal areas. This paper focuses on the different mining methods by analyzing the longwall panel layout and abandoned gateroad(AG) distribution in the abandoned area of Cuijiazhai coal mine in northwestern China. On the basis of three-dimensional geological model, FLAC3 D numerical simulation was employed. The abutment pressure distribution was simulated when the panel face passed through the disturbed areas. The proper angle of the inclined face was analyzed when the panel face passed through the abandoned gateroads. The results show that the head end of the face should be 13–20 m ahead of the tail end. The pillars on both sides of abandoned gateroads had not been damaged at the same time, and no large-area stress concentration occured above the main roof.Therefore, the coal reserves of disturbed areas can be successfully recovered by using underground longwall mining. 展开更多
关键词 Disturbed zone Recovery mining technology Abandoned gateroads Inclined face Numerical simulation
下载PDF
Support technology for mine roadways in extreme weakly cemented strata and its application 被引量:23
11
作者 Meng Qingbin Han Lijun +2 位作者 Qiao Weiguo Lin Dengge Fan Jiadong 《International Journal of Mining Science and Technology》 SCIE EI 2014年第2期157-164,共8页
For the engineering geology conditions of bad mine roadway roof and floor lithology in extremely weak cemented strata, the best section shape of the roadway is determined from the study of tunnel surrounding rock disp... For the engineering geology conditions of bad mine roadway roof and floor lithology in extremely weak cemented strata, the best section shape of the roadway is determined from the study of tunnel surrounding rock displacement, plastic zone and stress distribution in rectangular, circle arch and arch wall sections, respectively. Based on the mining depth and thickness of the coal seam, roadway support technology solutions with different buried depth and thickness of coal seam are proposed. Support schemes are amended and optimized in time through monitoring data of the deformation of roadway, roof separation, l-beam bracket, bolt and anchor cable force to ensure the long-term stability and security of the roadway surrounding rock and support structure. The monitoring results show that mine roadway support schemes for different buried depth and section can be adapted to the characteristics of ground pressure and deformation of the surrounding rock in different depth well, effectively control the roadway surrounding rock deformation and the floor heave and guarantee the safety of construction and basic stability of surrounding rock and support structure. 展开更多
关键词 Extreme weakly cemented strata mining gateway Support technology Numerical simulation with FLAC3D
下载PDF
Key Technology Research on the Efficient Exploitation and Comprehensive Utilization of Resources in the Deep Jinchuan Nickel Deposit 被引量:5
12
作者 Zhiqiang Yang 《Engineering》 SCIE EI 2017年第4期559-566,共8页
To understand the resource features and geology in the deep Jinchuan nickel deposit, difficult geological conditions were systematically analyzed, including high stress, fragmentized ore rock, prevalent deformation, d... To understand the resource features and geology in the deep Jinchuan nickel deposit, difficult geological conditions were systematically analyzed, including high stress, fragmentized ore rock, prevalent deformation, difficult tunnel support, complicated rock mechanics, and low mining recovery. An integrated technology package was built for safe, efficient, and continuous mining in a deep, massive, and complex nickel and cobalt mine. This was done by the invention of a large-area continuous mining method with honeycomb drives; the establishment of ground control theory and a technology package for high-stress and fragmented ore rock: and the development of a new type of backfilling cement material, along with a deep backfilling technology that comprises the pipeline transport of high-density slurry with coarse aggregates. In this way, good solutions to existing problems were found to permit the efficient exploitation and comprehensive utilization of the resources in the deep Jinchuan nickel mine. In addition, a technological demonstration in an underground mine was performed using the cemented undercut-and-fill mining method for stressful, frag- mented, and rheological rock. 展开更多
关键词 Deep mining Efficient exploitation Comprehensive utilization Key technology
下载PDF
Design of comprehensive test system for detecting overlying strata mining-induced fractures on surface with radon gas 被引量:1
13
作者 Zhang Wei Zhang Dongsheng Fan Gangwei 《Mining Science and Technology》 EI CAS 2011年第6期823-827,共5页
Based on radon gas properties and its existing projects applications, we firstly attempted to apply geo- physical and chemical properties of radon gas in the field of mining engineering, and imported radioac- tive mea... Based on radon gas properties and its existing projects applications, we firstly attempted to apply geo- physical and chemical properties of radon gas in the field of mining engineering, and imported radioac- tive measurement method to detect the development process of the overlying strata mining-induced fractures and their contained water quality in underground coal mining, which not only innovates a more simple-fast-reliable detection method, but also further expands the applications of radon gas detection technology in mining field. A 3D simulation design of comprehensive testing system for detecting strata mining-induced fractures on surface with radon gas (CTSR) was carried out by using a large-scale 3D solid model design software Pro/Engineer (Pro/E), which overcame three main disadvantages of ''static design thought, 2D planar design and heavy workload for remodification design'' on exiting design for mining engineering test systems. Meanwhile, based on the simulation design results of Pro/E software, the sta- bility of the jack-screw pressure bar for the key component in CTSR was checked with a material mechan- ics theory, which provided a reliable basis for materials selection during the latter machining process. 展开更多
关键词 mining engineering Radon gas detection technology mining-induced fractures Comprehensive test system Pro/Engineer 3D simulation
下载PDF
China's Technologies for Exploration and Mining of Uranium Deposits Have Stepped into the World's Top Team 被引量:1
14
作者 HAO Ziguo FEI Hongcai +1 位作者 LIU Lian Susan TURNER 《Acta Geologica Sinica(English Edition)》 SCIE CAS CSCD 2013年第6期1744-1744,共1页
On June 2011, the Beijing Research Institute of Uranium Geology, an Institute within the China National Nuclear Corporation (CNNC), and the Department of Geology & Mining CNNC carried out a project Scientific Drill... On June 2011, the Beijing Research Institute of Uranium Geology, an Institute within the China National Nuclear Corporation (CNNC), and the Department of Geology & Mining CNNC carried out a project Scientific Drilling.for Deep Metallogenic Research in the Xiangshan Large Uranium Ore Field. A year later on June 21, the project, representing the first scientific drilling of China's uranium, was officially launched, and successfully completed on June 17, 2013. A 2818.88 m of drilling depth has broken the previous record 1200 m of exploration depth. 展开更多
关键词 China’s Technologies for Exploration and mining of Uranium Deposits Have Stepped into the World’s Top Team
下载PDF
Thermal conductive proppant with self-suspension ability
15
作者 Guo-Qing Xu Xiu-Ping Lan +5 位作者 Si-Si hao Kai-Yi Hu Si-Meng Qi Li-Dong Geng Quan Xu Yang Zhou 《Petroleum Science》 SCIE EI CAS CSCD 2023年第3期1742-1749,共8页
The in situ mining technology is applied to the exploitation of medium-and low-maturity shale oil,which can use heaters to warm up the oil shale formations and pyrolyze the kerogen.Due to the low thermal conductivity ... The in situ mining technology is applied to the exploitation of medium-and low-maturity shale oil,which can use heaters to warm up the oil shale formations and pyrolyze the kerogen.Due to the low thermal conductivity of oil shale,electric heaters need extra equipment to improve heat transfer efficiency.In this study,a thermally conductive proppant is fabricated by coating epoxy-resin and graphite on ceramic proppants for the first time,which could support the fracturing crack and transfer heat.The thermal conduction property of epoxy-resin and graphite coated proppants(EGPs)is 245%higher than that of uncoated proppants,which can transfer more heat to the oil shale formation and accelerate the conversion of kerogen.The adhesive property of EGPs is improved by 47.9%under the load force of 1500 nN,which prolongs the time for the fracture to close.In summary,this novel proppant is expected to assist in-situ mining technology in the production of medium and low-maturity shale oil. 展开更多
关键词 Exploitation of shaleoil In situ mining technology Thermally conductive proppant Heat transfer
下载PDF
Application of bioinformatics in tropical medicine
16
作者 Wiwanitkit V 《Asian Pacific Journal of Tropical Medicine》 SCIE CAS 2008年第4期72-75,共4页
Bioinformatics is a usage of information technology to help solve biological problems by designing novel and incisive algorithms and methods of analyses.Bioinfonnatics becomes a discipline vital in the era of post-gen... Bioinformatics is a usage of information technology to help solve biological problems by designing novel and incisive algorithms and methods of analyses.Bioinfonnatics becomes a discipline vital in the era of post-genomics. In this review article,the application of bioinformatics in tropical medicine will be presented and discussed. 展开更多
关键词 BIOINFORMATICS Tropical medicine Data mining technology Genomics technology Genomics technology
下载PDF
Cluster analysis of Qian Jing-hua’s experience in treatment of lung cancer
17
作者 Zhi-Li Guo Jing-Hua Qian +2 位作者 Yi-Ping Fan Kai-Tao Luo Hong-Sheng Ding 《TMR Theory and Hypothesis》 2018年第3期54-62,共9页
Objective to analyze the rule of drug use in treating lung cancer disease by using the theory of fuzheng and dispelling evil in traditional Chinese medicine by data mining.Methods:By following Dr.Qianjinghua's out... Objective to analyze the rule of drug use in treating lung cancer disease by using the theory of fuzheng and dispelling evil in traditional Chinese medicine by data mining.Methods:By following Dr.Qianjinghua's outpatient department,we collected the prescription for the treatment of lung cancer by using frequency analysis,association rule analysis and cluster analysis.Results:746 prescriptions were included in this study,commonly used drugs 170 flavors.Traditional Chinese medicine with a high frequency of use were Baihuasheshecao(Hedyotis diffusa),Maorenshen(Actinidia valvata Dunn),Shishangbai(Selaginella doederleinii Hieron),Shijianchuan(Salvia chinensis Benth),Huangqi(Astragali Radix),Sanyeqing(Tetrastlgma hemsleyanum),Baimaoteng(HerbaSolani),Zhuling(Polyporus),Nvzhenzi(Ligustrum lucidum Ait)etc.Through the analysis of association rule,we find out the core prescription according to the support degree(10%,20%,30%)and the confidence degree,and set the correlation degree to 8 and punishment degree to 2.Finally:The core prescription efficacy of the drug group was analyzed and the theoretical connotation of preventive treatment of disease was obtained.Conclusion:The core prescription of preventive treatment of disease is to clear up heat and detoxification on the basis of strengthening the spleen,replenishing qi and tonifying kidney.The use of blood supplements and yin tonics throughout the course is reduced during treatments.The treatments also pay attention to the function of spleen and stomach of lung cancer patients,and adjust heat and detoxification force according to different conditions of patients and pay attention to the relief of patients’emotions. 展开更多
关键词 Data mining technology Lung cancer Help the right and remove evil spirits Association rules
下载PDF
Call for Papers Special Issue of Tsinghua Science and Technology on Data Mining and Knowledge Discovery
18
《Tsinghua Science and Technology》 SCIE EI CAS 2013年第2期206-206,共1页
Tsinghua Science and Technology is founded and published since 1996. It is an international academic journal sponsored by Tsinghua University and is published bimonthly. This journal aims at presenting the up-to-date ... Tsinghua Science and Technology is founded and published since 1996. It is an international academic journal sponsored by Tsinghua University and is published bimonthly. This journal aims at presenting the up-to-date scientific achievements in computer science, and other information technology fields. It is indexed by Ei and other abstracting and indexing services. From 2013, the journal commits to the open access at IEEE Xplore Digital Library. 展开更多
关键词 Call for Papers Special Issue of Tsinghua Science and technology on Data mining and Knowledge Discovery
原文传递
上一页 1 下一页 到第
使用帮助 返回顶部