关键词: 分层水库, 隔水幕, 分层取水, 下泄水温, 研究进展

Abstract: Discharged low-temperature water in stratified reservoir in spring and summer brings about ecological and environmental problems to the downstream areas. Selective withdrawal is an effective method to mitigate this problem. As a new facility of selective withdrawal of water, temperature-control curtain has advantages of low cost, less head loss, flexible operation and convenient construction, and is of vital academic and practical significance to the construction and management of reservoir. Currently there has been some engineering application and research results concerning temperature-control curtain in the USA and Japan, while the research in China is still preliminary. In the USA, research focuses on top curtain with discharge below, while in Japan, mid-and-small-sized reservoirs are the research emphasis. In China, the demand for research in temperature-control curtain is huge. In view of this, we should work on the theory and technology for the construction, operation, and regulation of temperature-control curtain according to the characteristics of reservoirs in China, particularly, large-scale deep reservoirs. In this paper we summarize the present research and application of temperature-control curtain in stratified reservoir, analyze the research limitations, and give some advices on further research and application.

Key words: stratified reservoir, temperature-control curtain, selective withdrawal, discharged temperature, research progress