人民黄河Issue(10)：97-99,3.DOI:10.3969/j.issn.1000-1379.2014.10.029
大石门水电站脱壁流竖井式溢洪道设计及应用
Design and Application of the Shaft Spillway with Ring Overflow Weir in Dashimen Hydropower Station
孙高升1
作者信息
- 1. 内蒙古水利水电勘测设计院，内蒙古 呼和浩特 010020
- 折叠
摘要
Abstract
A shaft spillway was used in the Dashimen Hydropower Station in order to deal with the layout of project due to the diversion in gorge. As primary energy dissipater,the water cushion pit was set on the bottom of the shaft,so the energy dissipater outside diversion tunnel was cut down. During the model test,a sudden enlargement section was set between the shaft inlet and the well casing,with the enlarged diameter,for via-ble air entrainment and prevention of cavitations erosion to shaft wall. In addition,the circular profile of water cushion pit was changed for horse-shoe section like the diversion tunnel. As the results,the change not only simplifies the construction,but also favorable for flow diffusion,increas-ing the energy dissipation efficiency. It is shown by the model test that the size and the type of the shaft are suited to the project. The inconsistency between construction diversion in gorge and the overall plan has been fairly solved.关键词
脱壁流/竖井式溢洪道/城门洞形断面/消力井Key words
weir overflow/shaft spillway/horseshoe section/water cushion pit分类
建筑与水利引用本文复制引用
孙高升..大石门水电站脱壁流竖井式溢洪道设计及应用[J].人民黄河,2014,(10):97-99,3.
