溢洪道

The water-wing always appears when discharge is smaller on steep slope of stepped spillways.

水翅是大坡度台阶式溢洪道在流量较小时出现的一种水流现象。

These spillways help prevent floods from 'dam'-aging or destroying a dam.

这些溢洪道有助于防止'洪水dam'老化或破坏水坝。

Model experimental studies indicating that when the base slope of spillways changes within the range of 40 degrees to 60 degrees,the water-wing nearly exists in the whole nappe flow ,even continuing to the transition flow.

模型试验表明：当斜坡角度为40°～60°时，水翅存在于几乎整个跌落水流范围内，甚至持续到过渡水流；随着溢洪道底坡的增大，水翅存在的流量变化范围增大、高度增加；随着台阶尺寸的减小，水翅高度降低，所存在的流量变化范围缩小。

The Stewart Mountain Dam located 41 miles (66 km) east of Phoenix, Ariz., on the Salt River, was completed in March 1930. The structure contains an arch dam, two thrust blocks for simulating abutments for the arch dam, three gravity dams, and two spillways.

绪论：Stewart大坝位于亚利桑那州，凤凰岛东部66Km的盐河上，于1930年3月建成，主体结构包括一座拱坝，两座模拟拱坝拱端的推力墩，三座小重力坝和两个溢洪道。

This project mainly Yuzui watershed embankment, Feisha spillway weir, three-bottle most of the intake and Baizhang embankment, were the words ancillary works on a dike, scientific solution to automatically divert the river (Yuzui watershed embankment 40 6 watershed), the automatic flushing (Yuzui watershed sand embankment on February 8 points), control water flow and other issues, eliminate the flooding, the West Sichuan Plain to become a "people from the flood and drought""Land of Abundance."

这项工程主要有鱼嘴分水堤、飞沙堰溢洪道、宝瓶口进水口三大部分和百丈堤、人字堤等附属工程构成，科学地解决了江水自动分流、自动排沙、控制进水流量等问题，消除了水患，使川西平原成为&水旱从人&的&天府之国&。1998年灌溉面积达到到66.87万公顷，灌溉面积已达40余县。

The optimization of the layout of the stilling well was also studied. The results show that the sudden enlargement between the circular inlet and the shaft in this spillway is significantly different from the traditional face-stuck shaft. This can prevent cavitation of the vertical shaft by high-velocity flow, reducing the difficulty of construction.

研究表明，该溢洪道自环形进水口以下采用突扩方式与竖井连接所形成的脱壁水流结构，与传统的贴壁式竖井的水流结构具有明显不同，不仅可以有效避免竖井段因水流流速较高可能造成的空化空蚀破坏，降低施工难度，而且有利于水舌掺气并促进消力井消能。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失