研究工程
- 与 研究工程 相关的网络例句 [注:此内容来源于网络,仅供参考]
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From the aeolotropy of hard rock of tunnel engineering region, the stress distribution of several kinds of fault to the water gushing of tunnel, the type of geology disaster involved in macrocharacter, main control factors, disaster mechanism and control strategy in tunnel excavating are studied systematically in this thesis. The purpose is to establish a theory and technology method for forecast and decrease disaster in tunnel excavating.
本文以硬岩隧道开挖工程区域岩体的各向异性研究为起点,从不同类型断层为主要构造形迹的应力分布特征出发,并结合隧道地下涌水灾害,系统研究隧道开挖的地质灾害类型,以宏观表象、主控因素、灾害机制及防治对策为主要研究内容,全面深入研究旨在为隧道开挖期间防灾、减灾提供理论基础与技术路线。
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The strategy and controller are coming from combined analysis of combustion mechanism, generation mechanism of pollutants, influential elements, present application status of PID control method in combustion, as well as sum-up of controlling experience and contradistinctive researches of control strategies. It is shown that this method, when applied to furnace temperature controlling and activated-sludge process, is able to ensure controlling objects tracking in the presence of varying operation conditions, as verified via computer simulation. The thesis consists of chapters as following: Chapter 1 generalizes the research objective and brings forward the inferior theme; generation mechanisms of pollutants
本论文由以下章节组成:第1章对研究课题作了综述,提出了研究的子课题;第2章分析探讨污染物生成机理及二次污染物产生的条件,研究了控制污染的工程控制策略;第3章分析研究了仿人智能控制基本理论及其优越性;第4章通过仿真实验验证了仿人智能控制算法在炉膛温度控制中的有效性;第5章分析研究了有效防止二次污染的烟气处理方法;第6章通过仿真实验验证了仿人智能控制算法在废水生化处理中的可靠性和有效性;第7章总结了全文研究工作并对今后的工作作了展望。
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With the investigation of the domestic and foreign literature systematically, the bases on the domestic and foreign present research and the comprehensive utilizations of the various knowledge of fluid mechanics in porous medium, reservoir engineering, mathematical physics, perforation completion, numerical simulation and so on, this article takes numerical simulation of gas reservoir of water solubility as the research aim which has completed following research works and obtained the corresponding research results: it analyzes the nature of the Water-soluble gas and formation water as well as the influent factors of the solubility through the study of massive materials; It establishes mathematical models three-dimension, the dual medium, the gas-water phase through the way of finite difference in the migration of water-soluble gas, which describes the entire process of release, migration and production in formation, where it considered the problems of variable bubble point; According to the numerical models of gas reservoir of water solubility it provides solution procedure that based on black oil model; It discovers that there will obtain the good effects in the lowly speed of development through simulation; the reinjection of formation water may largely enhance the produce degree of water-soluble gas when we consider reinjection in simulator; It considered the influence of perforated completion on development so as to increase the simulator"s versatility, It discovers that the simulator may reflect the conditions of development when we exanimate he simulator"s reliability with the empirical datum.
本文以水溶性气藏数值模拟研究为研究目标,在系统调研国内外文献、深入分析国内外研究现状的基础上,综合利用渗流力学、油气藏工程、数学物理方法、射孔完井以及数值模拟理论等多方面的知识,完成了以下研究工作并取得相应的研究成果;①通过对大量的资料调研,分析了水溶气、地层水性质、储层地质性质以及影响气体在水中溶解度的因素。②考虑到由于高压产生的大量水力裂缝,采用有限差分方法建立水溶气运移的三维、双重介质、气-水两相全隐式数学模型,该模型描述了水溶气在地层中的释放、运移和采出的整个过程。③在原有黑油模型的基础上,根据水溶性气藏数值模型编制了该数值模型的求解程序,该程序可以求解单重、双重介质两种情况。④通过模拟不同开采速度对水溶气开发效果的影响,发现开采速度较慢的时候可以取得较好的开采效果。⑤在模拟器中考虑了注水对水溶性气藏开发的影响,地层水回注可以大幅度提高水溶气的采出程度。⑥为增加模拟器的通用性,在模拟器中考虑了射孔完井方式对开采的影响。⑦检验模拟器计算的可靠性,发现在使用实验数据对水溶性气藏进行模拟时,模拟器可以很好的反映气藏开发的状态。
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According to the need of the subject"Study on Saving Energy in House Buildings with Concrete Blocks"conveyed by Science and Technology Committee of Liaoning Province and the feasibility of constructing high-rise block buildings in the area of eight of earthquake intensity, an experimental study on the mechanical properties of the high-strength masonry panels with concrete small-size hollow blocks has been finished, and both the dynamic characteristics and the seismic behaviors of elastic and plastic state of long cantilever reinforced block shear walls have been analyzed by finite element method in this paper.
中文题名高强混凝土砌块砌体基本力学性能的试验研究及其动力分析副题名外文题名 Experimental study on mechanical properties of masonry walls with high-strength small-size concrete hollow blocks and dynamic analysis 论文作者祝英杰导师刘之洋教授学科专业结构工程研究领域\研究方向学位级别博士学位授予单位东北大学学位授予日期2001 论文页码总数158页关键词混凝土结构砌块砌体剪力墙空心砌块配筋砌块馆藏号BSLW /2003 /TU375 /1 根据辽宁省科委项目"混凝土承重砌块节能住宅体系研究"的要求以及在八度抗震设防地区建高层砌块建筑的可行性,本文对高强混凝土小型砌块砌体的力学性能进行了试验研究;利用有限元法对长悬臂配筋砌块剪力墙的动力特性和弹塑性地震反应进行了分析。
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In this thesis, I summarize the theoretical calculation method, applied scope and notice of siphonic drainage system, and point out the advantage of siphonic drainage system compared with gravitation drainage system. In the archetype experiment study of siphonic drainage tube, I adopt different tube diameter and different structural height to survey the drainage volume and press in different place. I observe various kinds of flow state, and get chief factors which influence hydraulic peculiarity of system as the tube diameter or structural height, and find out the relevance of factor to flux. I apply CFD Fluent software and adopt standard k-ε model and RNG k-ε model, then use finite volume method and second-order upwind scheme to discrete numerical model, while coupling numeration of velocity field and press is based on SIMPLE. In the numerical simulation of curved part of tube, siphonic drainage tube experiment system and multi-outlet siphonic drainage system, I make research on internal velocity and press of system in different project condition by changing the tube diameter of curved part, negative press value in tube export and improving the quantity of water gutter. This thesis first adopts a method of combining archetype experiment and numerical simulation to study the siphonic drainage system, test and verify the validity of experiment and numerical simulation, and makefurther study on system, it solves the problems of limited testing conditions, and has a logical results, it can provide a valid method for optimizing and designing the drainage tube-net system. The conclusion have referring value for study and design of siphonic drainage system.
本文首先对虹吸式排水系统理论计算方法、适用范围以及注意事项做出总结,并分析了虹吸式排水系统的优势;再对虹吸式排水管道进行原型试验研究,采用不同管径不同立管高度,对系统流量、管道压强进行量测,观察了各种工况下的流态,对其水力特性进行研究分析,找出影响水力特性的落差、管径主要因素以及与排水量的关系;进一步应用计算流体力学Fluent软件,采用标准κ-ε模型与RNGκ-ε模型,计算过程应用有限体积法和二阶迎风格式对数值模型进行离散,速度和压力的耦合采用SIMPLE算法,分别对系统弯管段、虹吸排水管道试验系统、多斗虹吸式排水系统进行数值模拟分析,通过改变管段弯头处半径、管段出口负压值、增加雨水斗数对不同工况下系统内部的速度和压力进行研究;本文首次采用结合原型试验与数值模拟相结合的方法,对虹吸式屋面雨水排水系统进行研究,试验与模拟相互验证,并进行拓展,很好地解决了虹吸式屋面雨水排水系统由于试验条件限制问题,结果正确合理,为排水管网系统设计和优化研究提供了有效的方法,对工程设计有较好的参考价值。
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According to the relevant datums and field investigations, the paper makes No. 316 national highway in South region as research region to analyze the conditions of inoculating disasters and slope s transform destruction model and draws such conclusions:(1)Many factors such as terrain, geomorphic, lithosome and solum character, geologic structure, neotectonic movement, rainfall condition, groundwater trait, anthropokinetic and so on influence on the study region, which make the geological disasters occurred frequently and generate enormous hazards.(2)The geological disasters have such distribution characteristics: terrain and tectonic make geological disasters development of osculating correlated property, relative concentrate property, packet property, periodic property and so on.
本文首先在搜集相关资料和野外调查的基础上,以陕南316国道公路为重点研究区,全面分析了研究区域内地质灾害的孕灾条件与斜坡变形破坏模式,得到了以下认识:(1)研究路段地质灾害的发生发展主要受控于区内地形地貌、岩土体特性、地质构造与新构造运动、降雨条件、地下水特征及人类工程活动等因素:(2)研究路段发育滑坡、崩塌、泥石流和危险斜坡等四种地质灾害,具有如下的分布特征:地势与构造对地质灾害发育的密切相关性、相对集中性、群发性、周期性等;(3)研究路段斜坡地质灾害主要有六种变形破坏模式分别为:顺层滑动破坏、蠕滑—拉裂变形破坏、弯曲—拉裂—剪断破坏、旋转式滑移—拉裂破坏、楔形体滑动破坏、堆积层沿基岩面的滑动破坏模式,而且斜坡灾害的变形破坏往往是多种模式的组合。
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Modern approach methods of geography, ecology, quantitative analysis, expert integration, remote sensing image analysis and geographical information system were combined to reveal the matters in this paper. The eco-geographical background of the research area and the research work studied by other scholars were comprehensively expatiated. The temporal and spatial variation of precipitation and soil moisture, vegetation and soil distribution, and land use/land cover were compared as well. On the basis of foregoing analysis, the eco-geographical differentiation was discussed. According to principles and indicators, with extension engineering method and integrated analysis, the physical geography boundary between subhumid and semiarid areas were demarcated. By using remote sensing image analysis, wavelet analysis of the perennial precipitation and temperature, and the comparison of temporal and spatial variation of the desertification, this paper accounted for the regional response to global environmental change and suggested the dominant environmental problems.
本文采用了地理学与生态学相结合、定量分析与专家集成相结合、遥感图像解译和地理信息系统相结合的方法,对研究区的生态地理背景和已有研究工作进展情况给予了全面的分析和阐述;通过对区域水分条件(大气降水、土壤水分条件)、植被、土壤、土地利用/土地覆被状况等环境要素的时间与空间特征的对比分析,探讨了研究区内部生态地理特征的差异;在一定的原则指导下,通过建立指标体系,以可拓工程方法和模型为支撑,经过综合分析确定了研究区内半湿润、半干旱区界线划分方案;通过遥感图像解译、典型站点多年降水与温度的小波分析、土地沙漠化时空变化的对比分析等,说明了研究区域对全球变化的响应;表明了该区域所面临的主要环境问题。
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The project was based on the influence to the asphalt mixture volumectric property by the different compaction method (Marshall Compaction, Roller Compaction, Gyratory Compaction, Vibratory Compaction), a great deal of the experiments has been done with the consideration of the pratical construction. A lot of studies were carried out, such as the study of asphalt mixture image inquiring technique--"Colour Method", the feasibility study of the application of the 2D digital image processing technique on the asphalt mixture and the utiliztion of this technique on the compacting properties analysis of asphalt mixtures. A good beginning and foundation was made for the application of the digital image processing method on the study of the 3D asphalt mixture voluemetric components constitute.
本项目以研究不同沥青混合料成型方法(马歇尔击实、轮碾压实、旋转压实、振动压实)对沥青混合料体积特性的影响作为切入点,结合实际工程,进行了大量试验,开展了&色彩法&沥青混合料图像获取技术研究、沥青混合料二维数字图像处理技术的可行性研究以及采用该技术分析沥青混合料压实特性等研究工作,取得了一系列研究成果,为采用数字图像处理技术解决三维沥青混合料体积组成特性开创了良好的开端,奠定了坚实的基础。
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Based on them, distribution laws of subgrade temperature field under fluctuant boundary temperature cycle conditions are analyzed, and different ratios of slope for general subgrade and different status when there are or not banquettes are compared by laboratory simulation and numerical analysis; thermal insulation and cooling effect of thermal insulation slab, broken stone and non-power heat pipes is respectively investigated under the trend of elevated temperature by numerical analysis, laws of subgrade deformation are predicted under the trend of elevated temperature and influences of subgrade thaw settlement on pavement stress are studies by numerical computation for observation data of representative road sections selected.
为研究青藏公路冻土病害处治对策,从青藏公路2002年~2004年冻土病害整治工程实际出发,在系统分析研究青藏公路病害及发生机理的基础上,运用室内模拟试验、数值分析方法,依托处治冻土病害路段实际使用的隔热板路基、碎石路基、无动力热棒路基等进行现场试验,分析边界温度周期波动条件下的路基温度场分布规律,同时进行一般路基不同边坡坡率的对比研究及有无护坡道的对比研究;运用数值分析方法,对气温升高趋势下隔热板、碎石、无动力热棒的隔热降温效果进行了研究;选择代表性路段观测资料,运用数值计算的方法,进行升温趋势下的路基变形预测,研究路基融沉变形对路面应力的影响。
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A new study idea that makes the occupant injury prevention research and CAD/CAE technology on an integrate mathematical model by means of feature theories and feature design technologies was brought, and it is maybe useful if we study automobile passive safety on a new view of point.The conclusions of this thesis included that what are the main factors of airbag-related injuries and the preventive measures, based on the research of the relationships between injury parameters, such as HIC, chest acceleration, neck force, neck moment, femur axial force etc, and impact speed, belt-use, occupant size (50th and 5th), sitting position and so on. The thesis evaluated whether the effectiveness of the airbag can be increased by making the airbag adaptive to the crash conditions, and points out that the size of the ventilation hole has the dominating influence on the performance of the airbag and is a key factor for intelligent airbag, multi-stage and lower-power inflator can cost effectively minimize the risk of injury to occupants from crashes. It is important for the researchers of intelligent airbag to keep the small size unbelted occupants in focus and it is necessary to study deeply the influence of airbag fold patterns and the extremity out-of-position situation. These topics are important in the study of occupant injury prevention and vehicle safety design.
论文研究得出产生气囊损伤的主要原因和防护措施;在研究汽车碰撞速度、安全带使用情况、乘员的体型5~(th和50~、乘员乘坐的位置等不同事故条件作用下,乘员的头部、颈部、胸部和腿部损伤参数变化规律的基础上,论文从能量因素出发,深入研究了安全气囊卸载能力、气体发生器产气能力和气囊折叠对乘员损伤参数的影响,指出起卸载作用的排气孔其截面积是智能型安全气囊最重要的控制参数之一,以及采用降能展开或二次充气气囊有助于提高汽车安全防护性等重要结论;论文在参数分析的基严内容提要2 础上得出的智能型安全气囊应以不佩戴安全带的5乘员作为主要防护目标进行研究、有必要深入研究气囊折叠形式和司机处于极端离位状况时对损伤参数的影响等结论,对深入进行汽车乘员碰撞损伤研究和汽车安全性设计都具有重要的理论和工程实际意义。
- 推荐网络例句
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She gently rebuff ed him, but agreed that they could be friends
她婉言拒绝了,但同意作为朋友相处。
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If in the penal farm, you were sure to be criticized.
要是在劳改农场,你等着挨绳子吧!
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Several theories about reigniting and extinguishing of the arc have been refered.
本文综合考虑了几种电弧重燃和熄灭理论。