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International Conference on Natural Computation (ICNC)

作者： Yu Zhao Xiaohong Li Yiyu Lu College of Civil Engineering Chongqing University Chongqing China Key Laboratory for the Exploitation of South West Resources & the Environmental Disaster Control Ministry of Education Chongqing China

ISBN: (纸本)9780769528755

Source grey GM(1,1) model usually be used simulation and prediction of equidistant monitoring data sequent. But to non-equidistant and high growth data sequent, had to build the grey GM(1,1) model through equidistant treatment of non-equidistant data or to build directly non-equidistant grey model through complex transformation , and usually had larger lagging error. In time sequent [k,k+1] interval, in order to majorize and increase accuracy of background value z (1) (k+1), the area of [k,k+1] interval and GM(1,1) function curve envelope had been replaced by n small interval trapezoidal area . The GM(1,1) grey majorized model was built based on majorized grey model background value generally be used simulation and prediction of equidistant or non- equidistant and low or high growth data sequent of the MSW landfill settlement displacement. Data sequent characters of landfill displacement can be simulated and predicted better by the grey majorized model, and the model had higher simulation and prediction accuracy.

关键词： Predictive models Differential equations Computational modeling control engineering control engineering education Educational institutions Civil engineering Monitoring Accuracy Neural networks

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Analysis of deformation ＆ destruction mechanism and stability of F0 fault crush zone in Fangezhuang Coal Mine

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International Journal of Coal Science & Technology 2007年第3期13卷 261-265页

作者： LIU Wei-tao WU Qiang JI Bao-jing ZHOU Rui-guang Key Laboratory of Mine Disaster Prevention and Control Shandong University of Science and Technology Qingdao 266510 School of Resource and Safety Engineering China University of Mining and Technology （Beijing） Beijing 100083 China Institute of Geology and Geophysics Chinese Academy of Sciences Beijing 100029 China

Under the mining influence, carried on the electron microscope, the thin section analysis and creep tests to the fault matter's original sample and five groups of duplication samples, which have three kinds of moisture. The results of those tests indicate that confining pressure effect, structure effect and moisture effect all have influence to fault matter's nature. Meanwhile, the distortion destruction and stability variation of fault crush zone are the main reason which causes water-inrush lag-effect. Simultaneously, the stimulation computation we made by the numerical simulation software FLAC 3D also describes the mining influence to floor strata, fault crush zone's range and size, the influence of confined water on overburden and the fault zones, also it describes the time effect of bearing influenced by confined water and the rock dank height of confined water along the fault zones influenced by the specific water head.

关键词：压碎带形变断裂稳定性数字模拟煤炭开采

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Cranny density parameters and porosity measured by elastic wave method in quasi-isotropic cranny rock masses

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Journal of Central South University of Technology 2006年第5期13卷 598-602页

作者：王宏图贾剑青李晓红鲜学福胡国忠 Key Laboratory for Exploitation of China Southwestern Resources and Environmental Disaster Control Engineering Chongqing University

According to the characteristic of elastic waves propagation in medium and the application of elastic waves method in rock mass engineering, the cranny mass with random crannies was regarded as quasi-isotropic cranny mass. In accordance with the rock rupture mechanics, principle of energy balance and Castiglano＇s theorem, the relationship of effective dynamic parameters of elasticity （E, v, G） and cranny density parameters or porosity was put forward. On this basis, through the theory of elastic waves propagation in isotropic medium, the relationship between the elastic wave velocity and cranny density parameters and porosity was set up. The theoretical research results show that, in this kind of cranny rock masses, there is nonlinear relationships between the effective dynamic parameters of elasticity and wave velocities and the cranny density parameter or porosity; and with the increase of cranny density parameter or porosity of cranny rock masses, the effective dynamic modulus and the elastic wave velocities of cranny rock masses will decrease; and at the same time, when the cranny density parameter or porosity is very small, the effective dynamic modulus of elasticity and the elastic wave velocities change with the cranny density parameter, which can explain the sensitivity of effective elastic parameters and elastic wave velocities to cranny rock masses.

关键词： quasi-isotropic cranny mass wave velocities effective dynamic parameter cranny density parameter porosity

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DAMAGE MODEL OF control FISSURE IN PERILOUS ROCK

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Applied Mathematics and Mechanics(English Edition) 2006年第7期27卷 967-974页

作者：陈洪凯唐红梅叶四桥 Key Laboratory for the Exploitation of Southwestern Resources and the Environmental Disaster Control Engineering Ministry of Education Chongqing University Chongqing 400044 P. R. China Institute of Geotechnical Engineering Chongqing Jiaotong UniversityChongqing 400074 P. R. China Key Laboratory for the Exploitation of Southwestern Resources and the Environmental Disaster Control Engineering Ministry of Education Chongqing UniversityChongqing 400044P.R.China Key Laboratory for the Exploitation of Southwestern Resources and the Environmental Disaster Control Engineering Ministry of Education Chongqing University Chongqing 400044P. R. China

Hitherto, perilous rock is the weakest topic in disasters studies. Specially, damage of control fissure under loads is one key technique in study of develop mechanism of perilous rock. Damage division of end area of control fissure was defined by authors, then calculation methods of timed-Poisson＇s ratio and timed-Young＇s modulus were established in damage mechanics theory. Further, the authors set up damage constitutive equation of control fissure, which founds important basis to numerical simulation for control fissure to develop.

关键词： perilous rock control fissure damage area damage model application

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Fractal characteristics of electric properties of coal

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Journal of Coal Science & engineering(China) 2006年第1期12卷 52-55页

作者：刘成伦徐龙君鲜学福 Department of Applied Chemistry Chongqing University Chongqing 400044 China Key Laboratory for the Exploitation of South-West Resources and Environmental Disaster Control Engineering of Ministry of Education Chongqing University Chongqing 400044 China Key Laboratory for the Exploitation of South-West Resources and Environmental Disaster Control Engineering of Ministry of Education Chongqing University Chongqing 400044 China

In the light of fractal geometry theory, the characteristics of coal's electric parameters (including dielectric constant, alternating conductivity, dielectric loss angle tangent and electric polarization constant) were studied by using literature data. The results are shown that the electrical properties of coal have fractal characteristic. The fractal dimensions of dielectric, alternating conductivity, dielectric loss angle tangent were obtained, and are relative to the content of pyrite sulfur, heat and ash content of coal.

关键词： coal fractal dimension dielectric constant alternating conductivity electric polarization dielectric loss angle tangent time-fractal

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RESEARCH ON METHOD TO CALCULATE VELOCITIES OF SOLID PHASE AND LIQUID PHASE IN DEBRIS FLOW

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Applied Mathematics and Mechanics(English Edition) 2006年第3期27卷 399-408页

作者：陈洪凯唐红梅陈野鹰 Institute of Geotechnical Engineering Chongqing Jiaotong University Chongqing 400074P. R. China Key Laboratory for the Exploitation of Southwestern Resources and the Environmental Disaster Control Engineering Ministry of EducationChongqing UniversityChongqing 400044P. R. China

Velocities of solid phase and liquid phase in debris flow are one key problem to research on impact and abrasion mechanism of banks and control structures under action of debris flow. Debris flow was simplified as two-phase liquid composed of solid phase with the same diameter particles and liquid phase with the same mechanical features. Assume debris flow was one-dimension two-phase liquid moving to one direction, then general equations of velocities of solid phase and liquid phase were founded in two-phase theory. Methods to calculate average pressures, volume forces and surface forces of debris flow control volume were established. Specially, surface forces were ascertained using Bingham＇s rheology equation of liquid phase and Bagnold＇s testing results about interaction between particles of solid phase. Proportional coefficient of velocities between liquid phase and solid phase was put forward, meanwhile, divergent coefficient between theoretical velocity and real velocity of solid phase was provided too. To state succinctly before, method to calculate velocities of solid phase and liquid phase was obtained through solution to general equations. The method is suitable for both viscous debris flow and thin debris flow. Additionally, velocities every phase can be identified through analyzing deposits in-situ after occurring of debris flow. It is obvious from engineering case the result in the method is consistent to that in real-time field observation.

关键词： debris flow two-phase fluid velocities of solid phase and liquid phase calculation method verification

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STRUCTURAL DAMAGE MODEL OF UNSATURATED EXPANSIVE SOIL AND ITS APPLICATION IN MULTI-FIELD COUPLE ANALYSIS ON EXPANSIVE SOIL SLOPE

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Applied Mathematics and Mechanics(English Edition) 2006年第7期27卷 891-900页

作者：卢再华陈正汉方祥位郭剑峰周海清 Logistic Engineering University Chongqing 400041 P. R. China Navy University of Engineering Wuhan 430033 P. R. China Key Laboratory for the Exploitation of Southwestern Resources and the Environmental Disaster Control Engineering Ministry of EducationChongqing University Chongqing 400044 P. R. China

Focused on the sensitivity to climate change and the special mechanical characteristics of undisturbed expansive soil, an elasto-plastic damage constitutive model was proposed based on the mechanics of unsaturated soil and the mechanics of damage. Undisturbed expansive soil was considered as a compound of non-damaged part and damaged part. The behavior of the non-damaged part was described using non-linear constitutive model of unsaturated soil. The property of the damaged part was described using a damage evolution equation and two yield surfaces, i.e., loading yield （LY） and shear yield （SY）. Furthermore, a consolidation model for unsaturated undisturbed expansive soil was established and a FEM program named UESEPDC was designed. Numerical analysis on solid-liquid-gas tri-phases and multi-field couple problem was conducted for four stages and fields of stress, displacement, pore water pressure, pore air pressure, water content, suction, and the damage region as well as plastic region in an expansive soil slope were obtained.

关键词： unsaturated expansive soil elasto-plastic damage constitutive model consolidation soil slope raining evaporating numerical analysis

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Research achievements and application in anaerobic treatment of organic solid wastes—A review

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Chinese Journal Of Geochemistry 2006年第2期25卷 178-181页

作者：周富春熊德国鲜学福徐龙君 Key Laboratory of the Exploitation of Southwestern Resources & the Environmental Disaster Control Engineering under the State Commission of Education Chongqing University College of Hehai Chongqing Jiaotong University Chongqing 400074 China Jiaozuo Industry University Jiaozuo 454000 China

Anaerobic digestion is a good method, which possesses the optimal combination of volume reduction, probability of success and potential for resource and energy recovery. However, relatively little research has been done on the anaerobic digestion of organic solid wastes (OSW), especially in China. However, different substrates, start-up conditions, micro-organisms, processing technologies, pre-treatment methods could influence the result of anaerobic digestion. Anaerobic treatment of municipal OSW is less than that of wastewaters because some problems and obstructions need to be solved. Meanwhile, the application of anaerobic digestion of OSW is also discussed in the present paper.

关键词：有机固体废物厌氧性处理环境污染环境处理

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Micro-seismic wave's propagation law and its numerical simulation

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Journal of Coal Science & engineering(China) 2006年第2期12卷 40-42页

作者：逄焕东姜福兴林培兰 Key Laboratory of Mine Disaster Prevention and Control Shandong University of Science and TechnologyQingdao 266510China Drilling Technology Research InstituteShengli OilfieldDongying 257017China School of Civil and Environment Engineering University of Science & Technology BeijingBeijing 100083China Weifang United Transportation Co.Ltd. Weifang 261041China

Deduced the propagation rule of longitudinal and transverse wave. On the basis of this, propagation rules in attenuated visco-elastic media and varied Lame coefficient were put forward as well. The subsequent numerical analysis found that in a small scope longitudinal and transverse wave could be considered as homogeneously propagating when faultages and joints were not taken into account. The existence of lane hindered the wave＇s propagation, and it made the velocity gradient change in a local vicinity area. Therefore velocity varied in different direction.

关键词： micro seismic non-homogenization elastic wave velocity field

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Floor water irruption prediction based on information fusion

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Meitan Xuebao/Journal of the China Coal Society 2006年第5期31卷 623-626页

作者： Li, Li Cheng, Jiu-Long Key Laboratory of Mine Disaster Prevention and Control Shandong University of Science and Technology Qingdao 266510 China College of Safety Science and Engineering Civil Aviation University of China Tianjin 30030 China

Based on the analysis of water-disaster influencing factors, information fusion technology was used in traditional colliery industry, which aimed at deficiencies of traditional floor water irruption prediction methods. forecasting model was built using examples' information, and scientific judgement was made through information fusion, and forecasting result chart was drawn finally. The method was tested in a certain mine district water irruption prediction, the validity and reliability were proved elementarily.

关键词：信息融合突水预测模糊信息优化地理信息系统

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