闸下淹没出流大气复氧能力的研究  

A Study of the Reaeration of Submerged Flows under Gates

作　　者：李玉樑[1] 廖文根[1] 

机构地区：[1]清华大学水利水电工程系

出　　处：《水力发电学报》1989年第4期31-40,共10页Journal of Hydroelectric Engineering

基　　金：国家自然科学基金资助课题<水环境中污染物质的扩散与输移>的子课题

摘　　要：洩水建筑物对恢复河流中溶解氧的含量有明显的作用,国外对这个问题已有许多研究。本文利用50组天然观测资料对已有的四种闸下淹没出流复氧能力的计算公式进行了检验,发现它们的误差都相当大。在此基础上提出了一个简化的闸下淹没出流的氧平衡模型,并结合三家店引水渠进口的实测资料建立了复氧能力计算的半经验公式。计算值与实测值的比较说明,所获得的计算式的误差较小,可供工程实际应用。Sluice structures play important roles in restoring the content of dissolved oxygen in a river. This problem has been studied a lot abroad. This paper verifies the formulas for reaeration which had been obtained from 4 kinds of submerged flows under gates with the use of 50 sets of prototype data, great errors between them have been found. Based on this, a simplified oxygen balance model of a under-gate, submerged flow is put forth and a semiempirical formula for reaeration is set up by analysing the measured data of the channel intake in Shan Jin Dian. By comparing comp-utated values and measured data,it is concluded that the formula can be used in practical engineerings for its much smaller errors.

关 键 词：水闸 淹没 大气 复氧能力 河流 

分 类 号：TV66[水利工程—水利水电工程]