2025年04月14日 星期一

长江科学院院报 ›› 2012, Vol. 29 ›› Issue (7): 45-49.DOI: 10.3969/j.issn.1001-5485.2012.07.010

• 水力学 • 上一篇    下一篇

三峡工程泄洪坝段下游动床冲刷形态演变过程研究

刘东，车清权，毛三保   

  1. 长江科学院 水力学研究所，  武汉430010
  • 收稿日期:2011-07-14 出版日期:2012-07-01 发布日期:2012-07-01
  • 作者简介:刘东(1983-)，男，湖北宜都人，工程师，硕士，主要从事水工水力学研究

Evolution of Scour Pattern on Downstream Movable Bed in the Flood Discharge Section of Three Gorges Dam

LIU Dong, CHE Qing-quan, MAO San-bao   

  1. Hydraulics Department, Yangtze River Scientific Research Institute, Wuhan430010, China
  • Received:2011-07-14 Published:2012-07-01 Online:2012-07-01

PDF

2131

摘要： 为验证模型试验坝下动床冲刷坑形态与原型之间的差异，探讨下游冲刷演变过程,用散粒料模拟冲刷岩基，选取3组典型工况复演三峡枢纽蓄水以来泄洪坝段下游冲刷情况。研究表明不同阶段的典型试验工况与相对应条件的原型实测地形整体形态基本相似，说明冲坑形态演变与岩基地质特性有关。

关键词: 三峡工程, 泄洪坝段, 下游动床, 散粒体, 冲刷, 地形

Abstract: This research is to verify the difference of scour pit pattern on downstream movable-bed between model test and prototype, and to investigate the evolution of scouring in the downstream. With scattered granules to simulate the scoured bedrock, we chose three typical working conditions to re-play the scour in downstream of flood discharge section of the Three Gorges dam since impoundment. We found that the simulated scour topography was consistent with that of prototype measured under typical operating conditions at different stages, which demonstrated that the evolution of scour pattern is related with the geological characteristics of bedrock. Moreover, upstream water elevation, discharge, and scour time largely affect the scour pattern in downstream of the dam. 

Key words: Three Gorges dam, flood discharge section, downstream movable-bed, scattered granules, scour, topography

中图分类号: 

*严禁使用本系统存储、处理、传输涉密信息*
本系统由北京玛格泰克科技发展有限公司设计开发 技术支持：support@magtech.com.cn