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Key technology of mine underground mobile positioning based on LiDAR and coded sequence pattern

中国有色金属学会会刊：英文版 2011年第S3期21卷 570-576页

作者： WANG Zhi1, 2. WU Li-xin1, 2. LI Hui-ying3.1. college of {2. and {2. {3., northeastern university, shenyang 110004, China 2. Academy of Disaster Reduction and Emergency Management, Ministry of {2. Affairs and Ministry of Education, Beijing Normal university, Beijing 100875, China 3. college of Computer Science and Technology, Jilin university, Changchun 13.012. China [a] college of resources and {2. {3. Northeastern University Shenyang 110004 China [b] Academy of Disaster Reduction and Emergency Management Ministry of Civil Affairs and Ministry of Education Beijing Normal University Beijing 100875 China [c] college of Computer Science and Technology Jilin University Changchun 130012 China

Technologies of underground mobile positioning were proposed based on LiDAR data and coded sequence pattern landmarks for mine shafts and tunnels environment to meet the needs of fast and accurate positioning and navigation of equipments in the mine underground without satellite navigation signals. A coded sequence pattern was employed for automatic matching of 3. scans. The methods of SIFT feature, Otsu segmentation and fast hough transformation were described for the identification, positioning and interpretation of the coded sequence patterns, respectively. The POSIT model was presented for speeding up computation of the translation and rotation parameters of LiDAR point data, so as to achieve automatic 3. mapping of mine shafts and tunnels. The moving positioning experiment was applied to evaluating the accuracy of proposed pose estimation method from LiDAR scans and coded sequence pattern landmarks acquired in an indoor environment. The performance was evaluated using ground truth data of the indoor setting so as to measure derivations with six degrees of freedom.

关键词： LiDAR coded sequence pattern mobile positioning SLAM algorithm POSIT algorithm

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Vision navigation algorithm for mine agent based on quaternion

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中国有色金属学会会刊：英文版 2011年第S3期21卷 610-615页

作者： LI Ke-zhao1, 4, LEI Wei-wei1, 2. GUO Zeng-zhang1, 2. WU Li-xin3. ZHANG Qin4 1. School of Survey and Land Information engineering, Henan Polytechnic {2., Jiaozuo 454003. China 2. Key Laboratory of Mine Spatial Information Technologies of State Bureau of Surveying and Mapping, Henan Polytechnic {2., Jiaozuo 454003. China {3., northeastern university, shenyang 110819, China 4. college of Geology engineering and Geomatics, Chang’an {2., Xi’an 710054, China [a] School of Survey and Land Information engineering Henan Polytechnic University Jiaozuo 454003 China [b] Key Laboratory of Mine Spatial Information Technologies of State Bureau of Surveying and Mapping Henan Polytechnic University Jiaozuo 454003 China [c] college of resources and {2. {3. Northeastern University Shenyang 110819 China [d] college of Geology engineering and Geomatics Chang'an University Xi'an 710054 China

Autonomous relative navigation is the key technology in mining or rescuing. On the basis of mine requirement and the theories of machine vision, an autonomous relative navigation algorithm for mine agent based on quaternion was proposed. In rotation transformation, this algorithm was represented by using quaternion. Because the Jacobi matrix of this method is lower than that of Hall algorithm, the calculation efficiency is improved by using this algorithm. The results of these experiments show that the computation burden of this algorithm based on quaternion is about half that of Hall algorithm. This algorithm based on quaternion is improved as a valid way to solve the problem of mine real-time navigation.

关键词： quaternion mine agent vision navigation

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Terrain classification based on adaptive weights with airborne LiDAR data for mining area

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中国有色金属学会会刊：英文版 2011年第S3期21卷 648-653页

作者： LI Hui-ying1, WANG Zhi2. SUN Ya-feng1, LI Wen-hui1 1. college of Computer Science and Technology, Jilin university, Changchun 1{2.012. China 2. college of {{2. and civil engineering, northeastern university, shenyang 110004, China [a] college of Computer Science and Technology Jilin University Changchun 130012 China [b] college of resources and {2. {3. Northeastern University Shenyang 110004 China

The fast high-efficiency inspection for mining subsidence of mine area is a reliable way for forecasting accident and evaluating losing expense. In order to monitor mining subsidence of exploitation mine efficiently, LiDAR data were used and a novel strip division method was brought forward based on separating-treatment theory, which divided the mass of discrete three-dimensional point cloud data into a series of parallel strips and reduced the dimension in each strip. Polynomial fitting algorithm based on the adaptive weights, which located in the range of the strip, was used for classification complex terrain data of mine-area. The results show that LiDAR datamation can be greatly reduced. In the mean time, the time spending for calculation is shortened, and computational complexity is simplified. Therefore, high-efficiency terrain classification of LiDAR point cloud method can be great beneficial to monitoring environment of mine area.

关键词： mining subsidence airborne LiDAR strip division adaptive weights

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Preparation and characterization of uniform circinate aggregates of sheet ZnO nanoparticles

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Rare Metals 2008年第1期27卷 36-40页

作者： LIU Jiaxiang DING Deling WANG Lisheng and HAN Yuexin The State Key Laboratory of Chemical Resource engineering College of Materials Science and Engineering Beijing University of Chemical Technology Be~iing100029 China School of resources and civil {2. Northeastern University Shenyang 110004 China

Uniform circinate aggregates of sheet ZnO nanoparticles with a specific surface area of 2. m^2.g^-1 were prepared by the direct precipitation *** circinate aggregates were hexagonal ZnO,with the wall thickness ranging from 0.5 to 1 μm and the diameter ranging from 5 to 10 μ*** backs of the circinate aggregates were regularly arranged by numerous sheet ZnO nanoparticles with a thickness of 3.-80 nm and a diameter of 3.0-400 *** precursors were aggregates of sheet Zn5（CO3.2.OH）6 nanoparticles,which were decomposed into ZnO by calcining in air in the range of 2.0-2.5°C,and the ZnO retained the similar special *** C2.5OH content had a significant effect on the formation of sheet *** centripetal force,the Van der Waals force,and the hydrogen bond were deduced as the driving forces of the formation of circinate.

关键词： nano-ZnO circinate aggregates preparation technology microstructure characterization

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Comprehensive benefit of flood resources utilization through dynamic successive fuzzy evaluation model: A case study

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中国科学：技术科学英文版 2010年第2期53卷 529-538页

作者： FENG Feng1,2. XU ShiGuo1, LIU JianWei1, LIU Dan1,3.& WU Bo4 1 Institute of Water Environment, School of civil and Hydraulic {2., Dalian {2. of Technology, Dalian 11602., China 2.Yellow River Conservancy Technical Institute, Kaifeng 475003. China 3.{3. of Water resources, shenyang Agricultural {2., shenyang 110161, China 4 Office of Flood Control and Draught Relief in Jilin Province, Changchun 13.03., China 1. Institute of Water Environment School of Civil and Hydraulic Engineering Dalian University of Technology Dalian 116024 China2. Yellow River Conservancy Technical Institute Kaifeng 475003 China3. College of Water Resources Shenyang Agricultural University Shenyang 110161 China4. Office of Flood Control and Draught Relief in Jilin Province Changchun 130033 China

Taking the flood resources utilization in Baicheng, Jilin during 2.02.2.07 as the research background, and based on the entropy weight and multi-level & multi-objective fuzzy optimization theory, this research established a multi-level & semi-constructive index system and dynamic successive evaluation model for comprehensive benefit evaluation of regional flood resources utilization. With the year 2.02.as the base year, the analyzing results showed that there existed a close positive correlation between flood utilization volume and its benefits, comprehensive evaluation value and its comparison increment. Within the six successive evaluation years, the comprehensive benefit of 2.0{2.was the best, in which the benefit evaluation increment reached 82.8% whereas the year of 2.04 was the worst, in which the increment was only 18.2.. Thus the sustainability and correctness of the evaluation were verified by six years successive evaluation and increment comparison. The analyzing results showed that the economic benefits, ecological benefits and social benefits of flood utilization were remarkable, and that the comprehensive benefit could be improved by increasing flood utilization capacity, which would promote the regional sustainable development as well. The established dynamic successive evaluation provides a stable theoretical basis and technical support for further flood utilization.

关键词： flood resources utilization comprehensive benefit dynamic successive fuzzy evaluation Baicheng City

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Fault Tree Analysis on Failure of Bag Filter in Power Plant

Fault Tree Analysis on Failure of Bag Filter in Power Plant

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2.06（沈阳）国际安全科学与技术学术研讨会

作者： LI He college of resources & {2. {3. northeastern university shenyang 110004 China

＜正＞The major pollution of air contamination is the dust of power plant, the total amount of emission is beyond seventy percent. bag filter has high efficiency of dust removal will lead to the emission concentration decrease to 5 - 3.mg/m3., which is effective management to reach the emission standard. The failure of baghouse will disturb the running of equipment. FTA has been used to analyze the failure of filter, and based on success tree, some measures prompted also.

关键词： power plant bag filter filter failure fault tree dust

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Numerical Analysis of Cylindrical Cavity Expansion in Sand Considering Particle Crushing and Intermediate Principal Stress

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Transactions of Tianjin university 2010年第1期16卷 68-74页

作者：郝冬雪栾茂田李波陈榕 State Key Laboratory of Coastal and Offshore engineering Dalian University of Technology School of civil and Architecture engineering Northeast Dianli University Water resources college Shenyang Agriculture University

Considering the effects of particle crushing and intermediate principal stress on material yielding strength, the spatial mobilization plane(SMP) yielding criterion and state parameter model including a general critical state line are selected in the analysis of cylindrical cavity ***, combining Rowe s flow rule and Bolton s simplification to stress-dilatancy relationship to reflect soil shear dilatancy and softening behavior, this paper analyzes the problem of cylindrical cavity expansion i...

关键词： spatial mobilization plane(SMP) theory particle crushing strain-softening discretization analysis plastic zone

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NEURAL NETWORK ASSESSMENT OF ROCKBURST RISKS FOR DEEP GOLD MINES IN SOUTH AFRICA

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中国有色金属学会会刊：英文版 1998年第2期8卷 160-166页

作者： Feng Xiatingcollege of resources and {2. {3.,northeastern university, shenyang 110006, P. R. ChinaS. WebberCSIR Mining Technology, Johannesburg, South AfricaM. U. OzbayDepartment of Mining {3.,university of the Witwatersr

ＮＥＵＲＡＬＮＥＴＷＯＲＫＡＳＳＥＳＳＭＥＮＴＯＦＲＯＣＫＢＵＲＳＴＲＩＳＫＳＦＯＲＤＥＥＰＧＯＬＤＭＩＮＥＳＩＮＳＯＵＴＨＡＦＲＩＣＡ①ＦｅｎｇＸｉａｔｉｎｇＣｏｌｅｇｅｏｆＲｅｓｏｕｒｃｅｓａｎｄＣｉｖｉｌＥｎｇ... 详细信息

ＮＥＵＲＡＬＮＥＴＷＯＲＫＡＳＳＥＳＳＭＥＮＴＯＦＲＯＣＫＢＵＲＳＴＲＩＳＫＳＦＯＲＤＥＥＰＧＯＬＤＭＩＮＥＳＩＮＳＯＵＴＨＡＦＲＩＣＡ①ＦｅｎｇＸｉａｔｉｎｇＣｏｌｅｇｅｏｆＲｅｓｏｕｒｃｅｓａｎｄＣｉｖｉｌＥｎｇｉｎｅｒｉｎｇ，Ｎｏｒｔｈｅａｓｔ...

关键词： neural network rockburst risk South Africa

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Structural Design Optimum of the Compound Electrostatic-bag Filter

Structural Design Optimum of the Compound Electrostatic-bag ...

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第七届亚洲气溶胶会议

作者： Wenge Hao1 Mengcheng Li1 and Yan Li1 (1 college of resources and {2. {3. northeastern university shenyang Liaoning110819 China) college of resources and {2. {3. Northeastern UniversityShenyangLiaoning110819China

The compound electrostatic-bag filter has been used more and more widely as a new dust collector with its high collection efficiency and low operating energy consumption. The mathematical model of the manufacturing cost and the operating cost was established by studying its structure and system mechanism. The filtration airspeed and other parameters were optimized with the aim of achieving the lowest total cost of the bag filter （BF）. And in order to minimize the total cost of the compound electrostatic-bag filter, their respective efficiency of dust collection, the cleaning share rate of the electrostatic precipitator （ESP）, the length of the electric-field of the electrostatic precipitator and other parameters were optimized. This provides some valuable reference for the structure-designing and the operating parameters in the compound electrostatic-bag filter.

关键词： Electrostatic-bag filter, Energy consumption, Filtration airspeed Cost analysis, Structure optimum

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甘蔗镰孢霉与工业用酶制剂对三七茎叶有效成分转化作用的比较

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生态学杂志 2008年第8期27卷 1434-1437页

作者：韩颖胡筱敏姜彬慧赵余庆沈阳农业大学土地与环境学院沈阳110161 东北大学资源与土木工程学院沈阳110004 沈阳药科大学中药学院沈阳110006

采用生物技术对三七的种植废弃物——三七茎叶中的抗肿瘤成分人参皂苷化合物K(C-K)进行转化。比较β-葡聚糖苷酶、纤维素酶和甘蔗镰孢霉(Fusarium sacchari)对三七茎叶废弃物中总皂苷的转化作用,以C-K为检测目标,优选转化活性强、C-K生... 详细信息

采用生物技术对三七的种植废弃物——三七茎叶中的抗肿瘤成分人参皂苷化合物K(C-K)进行转化。比较β-葡聚糖苷酶、纤维素酶和甘蔗镰孢霉(Fusarium sacchari)对三七茎叶废弃物中总皂苷的转化作用,以C-K为检测目标,优选转化活性强、C-K生成量高的转化方法。结果表明,三七茎叶经甘蔗镰孢霉转化后,C-K的产量是原皂苷中含量的2.5倍,是经β-葡聚糖苷酶转化的2.3.、纤维素酶转化的3.。

关键词：三七茎叶生物转化酶制剂甘蔗镰孢

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