摘要
Abstract
In order to analyze the influence of Gutianxi Pumped Storage Power Station on the water environment of the lower reservoir,a two-dimension mathematical model for water environment of lower reservoir after dredging was established by using MIKE21.Aiming at the Caoyangxi tributary with heavy pollution load,the influence results of the current water quality,only ecological water supplement and pollution control were explored.The results showed that when the pumped storage power station was put into operation,the water level of the lower reservoir varied by 8.46 m,and the daily flow field changed greatly.Under the condition of ecological water supplement and comprehensive management of water environment,Caoyangxi tributary had the least impact on the quality of water pumped to the upper reservoir,and only the total phosphorus still exceeded the standard of Class Ⅲ lake and reservoir for 60min,with the maximum concentration of 0.052 mg/L;and during power generation,a pollution zone with a length of 1250 m and a width of 300 m was formed from the entrance of Caoyangxi tributary to the reservoir.The research results prove the necessity of pollution control in Caoyangxi tributary,and also provide references for other mixed type pumped storage power station projects to analyze the water environment impact.关键词
MIKE21/抽水蓄能/混合式/古田溪/水环境Key words
MIKE21/pumped storage/mixed type/Gutianxi/water environment分类
资源环境
