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检索条件"机构=Key Laboratory of Liaoning Province for Prediction and Control on Complicated Structure System"

共 45 条记录，以下是11-20 订阅

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Study on Surface Subsidence and Separation Range Thick Seam Mining of Daping Mine

Study on Surface Subsidence and Separation Range Thick Seam ...

引用

2013 International Conference on Civil,Materials and Environmental Sciences(CMES 2013)

作者： XU Menglin ZHU Xunguo ZHAO Deshen Key Laboratory of Liaoning Province for Prediction and Control on Complicated Structure System Dalian University

ISBN: (纸本)9783037857298

In order to study the surface subsidence and separation range features during the mining process in in thick seam mining of Daping mine, it takes the typical coal of mining in S2S9 face of Daping Mine, using the resemble simulation to study on it. The study showed that the subsidence amounted to less than the maximum under the geological and mining conditions, In the single-face mining conditions, when the face length is generally not more than(1/3-1/4) *** mining thickness cannot deflection in the form completely transmitted to the surface, but abound in overburden bed rock mass formed within the fracture and caving into the residual space. This research can be a reference for safety and high efficient coal mining of other working face in Daping Coal Mine.

关键词： Surface subsidence Separation range Resemble simulation Overburden bed separation

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Application of Entropy-Weight Hierarchy Analysis on Study of Height prediction of Water Conducted Zone

Application of Entropy-Weight Hierarchy Analysis on Study of...

引用

2013 International Conference on Civil,Materials and Environmental Sciences(CMES 2013)

作者： XU Menglin ZHAO Deshen Key Laboratory of Liaoning Province for Prediction and Control on Complicated Structure System Dalian University

ISBN: (纸本)9783037857298

Based on actual measurement data in Da Ping as the samples,according to the experience, and ends with calculate every factors' weight and height prediction of the water conducted zone by Matlab using the combination entropy-weight method and analytic hierarchy process. this paper introduces a comprehensive prediction model consisting of analytic hierarchy process and combination entropy-weight method. The method,overcoming weight's imbalance, gives the evaluation result better than does the single analytic hierarchy process, it is a new valid method for scientific forecast on water conducted zone.

关键词： Water conducted zone Entropy method Analytic hierarchy process Weights

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Analysis of three-dimensional numerical simulationin rlue of the migration rule of overlying strata in thick seam mining with soft of daping mine

Analysis of three-dimensional numerical simulationin rlue of...

引用

2013 3rd International Conference on Advanced Measurement and Test, AMT 2013

作者： Xu, Meng Lin Zhao, De Shen Key Laboratory of Liaoning Province for Prediction and Control on Complicated Structure System Dalian University Dalian 116622 China

ISBN: (纸本)9783037857168

In order to delve better what research methodology of height of water conducted fissure zone are, especially in mining of thick coal seam with soft, 3-D numerical simulationin was used to S2S9 face of Da Ping mine, it reveals the damage movement rule of overlying strata in mining roof-coal in "Three Soft" coal seam in the end. Thus it confirms the height of the water flowing fractured zone and tests the simulation result by the theoretical analysis and simple hydrology observation result. it provides a new idea for the application soft overburden in extra- thick seam mining technology. © (2013) Trans Tech Publications, Switzerland.

关键词： Coal

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Analysis of three-dimensional numerical simulationin on overlying strata's stress field and displacement field in thick seam mining

Analysis of three-dimensional numerical simulationin on over...

引用

2013 3rd International Conference on Advanced Measurement and Test, AMT 2013

作者： Xu, Meng Lin Zhao, De Shen Key Laboratory of Liaoning Province for Prediction and Control on Complicated Structure System Dalian University Dalian 116622 China

ISBN: (纸本)9783037857168

It takes the typical coal of mining in S2S9 face of Daping mine, using the 3-D numerical simulation to reveal on its face with the vertical characteristics of the stress field and displacement *** study showed that the overburden strata migration features during the mining process in in thick seam mining of Daping *** research can be a reference for safety and high efficient coal mining of other parts of the soft overburden in extra- thick seam mining technology. © (2013) Trans Tech Publications, Switzerland.

关键词： Numerical models

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Analysis of Three-Dimensional Numerical Simulationin on Overlying Strata's Stress Field and Displacement Field in Thick Seam Mining

Analysis of Three-Dimensional Numerical Simulationin on Over...

引用

2013 3rd International Conference on Advanced Measurement and Test(AMT 2013)

作者： XU Menglin ZHAO Deshen Key Laboratory of Liaoning Province for Prediction and Control on Complicated Structure System Dalian University

It takes the typical coal of mining in S2S9 face of Daping mine,using the 3-D numerical simulation to reveal on its face with the vertical characteristics of the stress field and displacement *** study showed that the overburden strata migration features during the mining process in in thick seam mining of Daping *** research can be a reference for safety and high efficient coal mining of other parts of the soft overburden in extra-thick seam mining technology.

关键词： 3-D numerical simulation strata migration vertical stress field displacement field

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Analysis of Three-Dimensional Numerical Simulationin Rlue of the Migration Rule of Overlying Strata in Thick Seam Mining With Soft of Daping Mine

Analysis of Three-Dimensional Numerical Simulationin Rlue of...

引用

2013 3rd International Conference on Advanced Measurement and Test(AMT 2013)

作者： XU Menglin ZHAO Deshen Key Laboratory of Liaoning Province for Prediction and Control on Complicated Structure System Dalian University

In order to delve better what research methodology of height of water conducted fissure zone are,especially in mining of thick coal seam with soft,3-D numerical simulationin was used to SS face of Da Ping mine,it reveals the damage movement rule of overlying strata in mining roof-coal in "Three Soft" coal seam in the *** it confirms the height of the water flowing fractured zone and tests the simulation result by the theoretical analysis and simple hydrology observation *** provides a new idea for the application soft overburden in extra- thick seam mining technology.

关键词： water conducted zone three-dimensional numerical simulation strata damage theoretical analysis

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Study of strength criterion for dynamic biaxial compressive properties of concrete under constant confining pressure

Study of strength criterion for dynamic biaxial compressive ...

引用

2011 International Conference on Electric Technology and Civil Engineering, ICETCE 2011

作者： Ping, Guan Peng, Liu Key Laboratory for Prediction and Control on Complicated Structure System of Liaoning Province Dalian University Dalian China

ISBN: (纸本)9781457702907

The dynamic compressive experiments of cubic concrete specimens under various constant lateral pressures were preformed. The lateral confining pressure in the tests were kept constant at 0MPa, 4MPa, 7MPa and 10MPa, respectively, and the tested strain rate ranged from 105/s to 10 2/s. Based on the experimental results, the influence of the strain rates on compressive characteristics of concrete under various constant lateral pressures were researched. The strength criterion in terms of principal stress and the unified strength criterion in octahedronal stress space considering the influence of strain rates and lateral pressures are proposed respectively. The fitting curves by the present strength criterion agree well with experimental data. © 2011 IEEE.

关键词： Strain rate

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Design and analysis based energy dissipation for self-anchored cable-stayed suspension bridge based-on elastic-plastic theory

Design and analysis based energy dissipation for self-anchor...

引用

International Conference on Electric Technology and Civil Engineering (ICETCE)

作者： Miao, Feng Guan, Ping Zhu, Weizhi Key Laboratory for Prediction and Control on Complicated Structure System of Liaoning Province Dalian University Dalian China Institute of Bridge Engineering Dalian University of Technology Dalian China

ISBN: (纸本)9781457702907

The fiber model of Dalian Bay Bridge is established with simulating plastic hinge by distribution hinge model, nonlinear time-history is analyzed by Midas/Civil based-on elastic-plastic theory. Compared of time-history results between elastic to elastic-plastic stage showed: the internal forces of structure are reduced mainly in bending moment and axial-force on tower root, because of dissipation of seismic energy inputting after into elastic-plastic stage, but longitudinal displacement increased on top of tower and middle span of beam due to the rotation of plastic hinge. After setting viscous dampers between beam and tower, longitudinal displacement of tower roof and beam has a more reduced significantly, but also reduced tower root bending moment and shearing. © 2011 IEEE.

关键词： Energy dissipation

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Vertical seismic response of self-anchored cable-stayed suspension bridge under pile-soil-structure interaction

引用

1st International Conference on Civil Engineering, Architecture and Building Materials, CEABM 2011

作者： Miao, Feng Ping, Guan Bo, Wang Education Department of Liaoning Province Key Laboratory for Prediction and Control on Complicated Structure System Dalian University of Technology No.10 Xue Fu Street Dalian 116622 China

ISBN: (纸本)9783037851258

Based on scheme of Dalian gulf cross-sea bridge, in this paper, a 3-dimensional FE model for Self-anchored cable-stayed suspension bridge is established with finite element program and pile-soil-structure interaction is simulated by use of the equivalent embed fixation model. Based on the FE model, model analysis is carried out and the effects of pile-soil-structure interaction on dynamic behavior of long-span self-anchored cable-stayed suspension bridge are specially studied. Under vertical excitation, the seismic response analysis result considering that pile-soil-structure interaction was compared with that of without considering such interaction. The analysis result show that interaction reduced longitudinal displacement of stiffening beam in middle of main span and tower at bottom, moment at bottom of tower and auxiliary pier pile, but enlarged the moment of conjoining section between steel and steel beam. The research results provide some theoretical foundation to composite structure system. © (2011) Trans Tech Publications.

关键词： Seismic response

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The study on Size effect of fracture toughness of test of undisturbed frozen soils based on Gray theory

The study on Size effect of fracture toughness of test of un...

引用

International Conference on Mechanic Automation and control Engineering (MACE)

作者： Xiao-zhou Liu Liu Peng Sun Qiao Bai Hui-ren Key Laboratory for Prediction & Control on Complicated Structure System of Liaoning Province Dalian University China Key Laboratory for Prediction & Control on Complicated Structure System of Liaoning Province Dalian University Dalian China

Based on the previous undisturbed frozen field test, the research and analysis on the Size effect of fracture toughness K IC of vertical crack and herringbone crack of undisturbed frozen soils specimens of test I is performed emphatically, and it is found the rules that it varies with volume change. Meanwhile, a theoretical prediction by using the Gray system Theory methods is made and the theoretical prediction results K IC has been gotten, which is compared with the results of the test and the error fits the accuracy requirement. Thus it has been made a meaningful exploration for the research method of Size effect of fracture toughness K IC of test I of undisturbed frozen soils.

关键词： Integrated circuits Soil Rocks Sun Electronic mail Manuals Oceans

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