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水库深孔挑射出流对复氧的试验研究
引用本文:范丽丽,沙海飞,吴时强,周辉,陈惠玲.水库深孔挑射出流对复氧的试验研究[J].水科学进展,2006,17(2):176-180.
作者姓名:范丽丽  沙海飞  吴时强  周辉  陈惠玲
作者单位:1.河海大学环境学院, 江苏, 南京, 210098;
摘    要:在水工泄水建筑物复氧能力的研究中,前人对自由溢流复氧能力和闸下出流复氧能力的研究较多,但对泄流水库下层水的中孔和深孔的复氧能力研究较少.为了消除低溶解氧的水库下层水对下游生态环境的不利影响,保证水生生物的多样性,在滩坑水电站泄洪洞模型中进行了系统的试验,发现复氧率与弗汝德数和下游相对水深相关性较好,同时增设掺气槽能够显著的提高复氧率.经研究提出的在一定条件下的经验公式,为水工深孔设计提供了参考.

关 键 词:水库    复氧    试验研究    生态环境
文章编号:1001-6791(2006)02-0176-05
收稿时间:2004-09-22
修稿时间:2004-12-10

Experimental studies on aeration performance of hydraulic tunnel excavation
FAN Li-li,SHA Hai-fei,WU Shi-qiang,ZHOU Hui,CHEN Hui-ling.Experimental studies on aeration performance of hydraulic tunnel excavation[J].Advances in Water Science,2006,17(2):176-180.
Authors:FAN Li-li  SHA Hai-fei  WU Shi-qiang  ZHOU Hui  CHEN Hui-ling
Institution:1.Hohai University, Nanjing 210098, China;2.Nanjing Hydraulic Research Institute, Nanjing 210029, China
Abstract:In the previous aeration researches on the sluice structure,there are many achievements about the free-surface aeration and the sluice aeration,but there are fewer hydraulic tunnel excavation aeration researches.In order to reduce the disadvantageous impact on the ecological environment,a set of aeration performances were conducted for the hydraulic tunnel excavation.It is found from the experiments that the oxygen transfer efficiency at the hydraulic tunnel excavation is related to Fr and h_t/h.It also reveals that the oxygen-transferable efficiency of the hydraulic tunnel excavation increases with the aerator.It is expected that the results from this study will serve for the improvement of the design of the hydraulic tunnel excavation with high aeration efficiency.
Keywords:reservoir  aeration  experimental  ecological environment
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