坝

Concrete rock and earth plate dam of super-short cement is a new type of dam in hydraulic structures.

超贫胶结混凝土土石面板坝是水利工程中的一种新坝型。

Changes of thermal stress of dam heel, upstream face, dam center, dam toe. downstream face for the longitudinal joint of different space are analyzed.

分析了坝体不同间距的纵缝对坝踵、上游面、坝体中心部位、坝趾、下游面的温度应力的影响情况。

Proposed the exist dam plus new fishway and new check dam with fishway design are presented for reference here.

最后提出既有防砂坝加设鱼道与新设防砂坝附设鱼道之设计步骤，提供设计参考使用。

Due to the difference of the terrain and rainfull between Taiwan and the other countries, the fishway of the check dam in Taiwan can not be completely imitated from other country. Therefore Slopeland Engineering Lab of Department of Soil and Water Conservation , NCHU makes a series of experiment in fishway of the check dam from 1998-2008. The experiments focus on structure of inclined section、horizontal section and U-turn horizontal section of the fishway.

有鉴於国内外地形及降雨条件的差异，台湾的防砂坝鱼道不能套用国外鱼道经验，因此国立中兴大学水土保持学系坡地工程研究室於1998年起至2008年不断进行防砂坝鱼道构造试验之模拟，分别探讨鱼道的倾斜段、水平段与回头弯段构造应用与水理分析。

In order to study the influence of urban river overflow dam on dissolved oxygen and COD_,a small overflow dam in an urban river was selected and two sample points were fixed to monitor the changes of water quality timely.

为定量研究河道滚水坝对水体溶解氧和高锰酸盐指数的影响，选择一城市河道小型滚水坝，在坝前和坝下设监测点，定期监测水质变化。

The administered scope is from the center of the steal wire bridge, through Zhangsheli to the tailing dam (slush cave, which includes tailings, pipeline, tailing divider, preliminary dam, drainage ditch, drainage clough, tilted floodway, surrounding hill slope, etc.

管辖范围（从钢丝桥中心分界，经张舍里至尾砂坝止，包括尾砂、管道、尾砂分流管、初期坝、排水沟、排水涵门洞、排洪斜槽、周围山坡等。

Longbianensis forests (1200-1850m), zone of mid-low mountain Pinus yun-nanensis forests (1850-2100m), transition zone of Gaultheria forrestii brush-grass slope (2100-2300m), zone of mid-mountain moist evergreen broadleaf forests (2300-2600m) and zone of top mountain dwarf moss forests (over 2600m)....

这势必也引起昆虫在垂直方向上的分异。结合哀牢山森林生态系统生态站和云南亚热带山地生态垂直分异及其合理开发利用的研究工作，1982～1985年在哀牢山北段西坡的景东川洱坝至徐家坝山顶北纬24°32

Maximum input bias current is 10 pa and typically remains below 300 pa over the entire industrial temperature range.

最高输入偏流通常仍低于10和300坝坝在整个工业温度范围。

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。

A dam placed across a river or canal to raise or divert the water,as for a millrace,or to regulate or measure the flow.

堰，拦河坝，挡流坝横截河流或运河以提高水位或使河水转向的坝，如用于推动水车，调节或测量水流

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。