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过坝水流中超饱和气体的产生机制和变化过程研究

发表时间:2015-01-31  浏览量:1676  下载量:450
全部作者: 付小莉,沈超
作者单位: 同济大学土木工程学院
摘 要: 为探索超饱和气体(total dissolved gas,TDG)的产生机制和变化规律,与以往关注TDG的机理和某些特性不同,研究尝试从现场观测的角度,对过坝水流TDG从前池水库一直到尾水河道的物理过程进行详细的阐述和分析。结果表明,TDG的产生和交换过程主要在溢洪道和消力池发生,而溢洪道的流量、挑流坎以及消力池中的水深又是最关键因素。研究可为改善过坝鱼类的生存条件提供参考。
关 键 词: 环境水利;超饱和气体;泄流方式;现场观测;优化调度
Title: Research on the producing mechanism and exchange processes of total dissolved gas through the dam
Author: FU Xiaoli, SHEN Chao
Organization: College of Civil Engineering, Tongji University
Abstract: To explore the total dissolved gas(TDG) exchanging processes and changing patterns, this paper focused on physical processes governing the producing mechanism and TDG exchange at forebays, spillways, powerhouses, stilling basins and tailwater channels based on studies on field observations. Similarities was drawn between these general processes and the existing TDG exchange properties at a lot of dams. The TDG concentration on the stilling basin and spillway where the most complicated flow pattern happened was relevant to spillway flow, spillway jet, powerhouse operation and tailwater channel flow. The surviving conditions of fishes passing through the dams will benefit from it.
Key words: environmental water conservancy; total dissolved gas; spillway release; field observation; optimal operation
发表期数: 2015年1月第2期
引用格式: 付小莉,沈超. 过坝水流中超饱和气体的产生机制和变化过程研究[J]. 中国科技论文在线精品论文,2015,8(2):114-119.
 
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