查询词典 dams

Economics professor Pedro Arrojo-Agudo, who teaches at the University of Zaragoza in Spain, is using his academic expertise to battle a monster: the National Hydrological Plan, a $25 billion project that would build 120 dams on the Ebro River. The dams would submerge entire towns along Spain's second-longest river, displace tens of thousands of rice and fish farmers, and poison the wetlands of the river delta with salt.

在西班牙萨拉戈萨大学任教的经济学家培德洛E亚若杰阿古多（Pedro Arrojo-Agudo）运用他的专业知识，和一头大怪物「国家水文计画」奋力对抗，这是一项高达250亿美元的计画，将在伊布罗河上建立120座水坝，这些水坝会淹没西班牙第二大河沿岸的数个城镇、迫使数以万计的农夫和渔民迁徙，并使河口三角洲的湿地被盐侵蚀。

The maj or obj ect of this paper is the medium.small size concrete dams that have been used for many years.They have the characteristic that the alteration of water height of reservoirs is unobvious and the dams, displacements are affected mainly by temperature.With a case,the method of stepwise regression is used to analyze the vertical displacement prototyDe observed data.Then regression equation is established,the relation of dam,s displacement with hydraulic pressure、temperature、time effect is analyzed and the displacement change rule is obtained,the dam'S displacement onlv dependent to temperature is received.According to the theory of Finite Elements Method,the quasi-stationary temperature field formula and temperature stress formula are deduced.The QTP program and TFEM3D program are written with FORTRAN.The same case is calculated through QTP program to solve the quasi-stationary temperature and through TFEM3 D program to solve the dam'S displacement and find tlle dam,s deformation rule.This rule is accordant with the regression,S resuIt.

本文主要针对运行期间库水位变化很小、坝体的位移主要受温度变化影响的中小型混凝土坝，结合工程实例，采用逐步回归的方法对垂直位移原型观测资料进行分析，建立回归方程，分析坝体位移与水压、温度、时效之间的关系以及位移变化规律，分析结果坝体位移只与温度有关，而基本上不受库水位变化和时效的影响；根据有限元原理推求了混凝土坝准稳定温度场公式和温度应力公式，利用FORTRAN语言编制出QTP准稳定温度场程序和TFEM3D位移场程序，对大坝的温度场和位移场进行计算，求出坝体结点的变温值和坝体结点位移值以及单元应力分量，分析得到大坝的变形规律与实测资料以及回归统计变形规律一致，说明对坝体准稳定温度场的研究是正确的。

In this paper, based on the field survey data and model test results, the overtopping failure mechanism and process of break development of earth-rock dams are analyzed, and a numerical model which describes the process of break development of earth-rock dams is put forward.

本文首先根据现场溃坝调查资料和大型溃坝试验结果，研究分析了土石坝的溃决机理和溃决过程，在此基础上提出了一个描述土石坝漫顶破坏溃口发展过程的数值模型。

Based on observation data, the development process of the breach of landslide dams due to over topping may divided into 3 modes: vertical erosion, breadthwise extension and regression erosion of dam slope. A mathematical model describing the gradual failure process of the landslide dams is established based on the formula expressing the high intensity erosion obtained from experimental data, which can integrate the 3 modes of breach development process together. The validity of the model is verified by observation data.

根据一般滑坡堰塞坝特点和实际观测到的堰塞坝溃口发展规律建立了一个溃口扩展模式，并将溃口扩展过程归纳为溃口垂直下切、横向扩展和坝坡溯源冲刷3种主要表现形式，采用通过试验资料建立的高强度泥沙冲刷计算公式将这3种表现方式联系在一起，建立了堰塞坝逐渐溃决数学模型，并利用实测溃坝资料验证了模型的可靠性。

The results of analysis show that three earth dams under test are uniform earth dams with sound quality. The position of saturation line determined by GPR complies with the result determined by the piezometric tube.

测试分析表明，所测的三座土坝为均质土坝，工程质量较好，用探地雷达确定的浸润线位置与测压管实测结果相吻合。

And he wanted First Army to attack north of the Ardennes, south of Aachen, to get the Roer River dams, so that the U.S. Ninth Army could cross the Roer downstream from the dams, then close to the Rhine.

而打算令第1集团军向阿登以北、亚琛以南攻击，夺取鲁尔河水坝，以便美第9集团军能够横渡水坝下游鲁尔河，然后抵达莱茵河。

The investigation of a reservoir was done for the first time in China. The results show that construction and removal of dams are complicated, and that the studies on the ecological environment impact due to decommissioning and removal of dams are of great significance.

结果表明，水库大坝的兴建与退役拆除均是复杂的系统工程，水库大坝退役拆除及对生态环境影响研究具有重要的意义，我国在这方面刚刚起步。

The problem of interaction of dam-reservoir for cored rockfill dams are also deeply discussed, and the author points out that it seems unnecessary to overestimate the impact of hydrodynamic pressure for cored rockfill dams constructed on deep overburdens.

在本文的研究中，作者还对深覆盖层上的心墙土石坝坝—库水相互作用问题进行了深入研究，并指出对修建在深覆盖层上的心墙土石坝进行动力分析时过分强调动水压力的影响似乎没有必要。

A brief discussion on seismic design of high arch dams is made through the following three aspects:interaction of arch dams-foundation-reservoir water,dynamic stability of high arch dam abutment ,effect of transverse slots on seismic design of high arch dam,and those aspects referred to above is not enough for seismic design of high arch dam.

对高拱坝的抗震设计进行了分析，包括拱坝坝体-地基-库水动力相互作用分析、高拱坝坝肩抗震稳定分析、横缝对高拱坝抗震设计的影响，仅对高拱坝抗震设计研究的几个方面进行了概括总结。

Based on these hot and key spots in construction of high dams at present, Combining one of the 973 plan projects: Study of Global Stability of Geology Engineering System under Interaction of Several Factors(NO.2002CB412707), the dissertation mainly studies the stability anomaly and corresponding shape optimization. The main contents are as follows:The dissertation advances stability analysis method of arch dams based on arch-cantilever method, that is, the stability of arch ring and cantilever are analyzed respectively based on arch-cantilever method and corresponding formula of stability calculation is established. So the calculation methods of dam stress and stability are unified.

围绕目前高拱坝建设中的热点和重点问题，结合973计划课题：多因素相互作用下地质工程系统的整体稳定性研究(编号 2002CB412707)，重点研究高拱坝的稳定转异以及体形优化，现将主要内容归纳如下：本文提出基于拱梁分载法的拱坝稳定分析方法，即在拱梁分载法的基础上，分别分析拱圈和悬臂梁的稳定，建立相应的稳定计算公式，统一坝体结构稳定和应力计算方法。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。