科技创新导报
科技創新導報
과기창신도보
SCIENCE AND TECHNOLOGY CONSULTING HERALD
2015年
3期
111-114
,共4页
夏季%水环境评价%三峡水库%长江宜昌段
夏季%水環境評價%三峽水庫%長江宜昌段
하계%수배경평개%삼협수고%장강의창단
Summer%Aquatic environment assessment%Three Gorges Reservoir%Yangtze River’s Yichang Section
采用原位监测在夏季从三峡库区到下游枝江的长江干流区段选定监测点进行日间水体环境指标测量。结果表明，三峡大坝上下游表层水温有明显差异性，西陵峡内长江水温无较大变化，流经宜昌城区后水温高于三峡水库。经水库温度分布模拟，三峡水库水温各季节分布差异明显，体现出水温分层现象，最低水温出现时间向后推迟。大坝下游溶氧较高，风速强也会使DO上升。从西陵峡口开始表层水体pH不断下降，应考虑实施兼顾生态保护的水库调度。
採用原位鑑測在夏季從三峽庫區到下遊枝江的長江榦流區段選定鑑測點進行日間水體環境指標測量。結果錶明，三峽大壩上下遊錶層水溫有明顯差異性，西陵峽內長江水溫無較大變化，流經宜昌城區後水溫高于三峽水庫。經水庫溫度分佈模擬，三峽水庫水溫各季節分佈差異明顯，體現齣水溫分層現象，最低水溫齣現時間嚮後推遲。大壩下遊溶氧較高，風速彊也會使DO上升。從西陵峽口開始錶層水體pH不斷下降，應攷慮實施兼顧生態保護的水庫調度。
채용원위감측재하계종삼협고구도하유지강적장강간류구단선정감측점진행일간수체배경지표측량。결과표명，삼협대패상하유표층수온유명현차이성，서릉협내장강수온무교대변화，류경의창성구후수온고우삼협수고。경수고온도분포모의，삼협수고수온각계절분포차이명현，체현출수온분층현상，최저수온출현시간향후추지。대패하유용양교고，풍속강야회사DO상승。종서릉협구개시표층수체pH불단하강，응고필실시겸고생태보호적수고조도。
The daytime aquatic environmental indicators at Three Gorges Reservoirs(TGR)and Yangtze River’s Yichang Section were measured by in situ monitoring.The results showed that there is distinct difference of surface water temperature between upstream and downstream, while surface temperature of Xiling Gorge had no obvious change during the monitoring.Surface water temperature of downstream at Yichang City is higher than at TGR.The water temperature distribution changes obviously in different seasons and water depths,and the minimum water temperature appears later than before though the water temperature distribution simulation.The dissolved oxygen(DO) is higher, and higher wind speed will also increase DO.The pH in surface water is decreasing from the end of Xiling Gorge.Hence,the ecological operation should be considered.
