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1 问题的提出 官厅水库是新中国成立后我国兴建的第一座大型水库,是永定河的重点治理工程,是阻挡永定河洪水威胁北京的重要屏障,也是首都北京的主要供水水源。官厅水库控制着上游43402km2的流域面积,占永定河总流域面积的91％。水库于1951年动工,1954年建成投入运行。1989年大坝加高后总库容为41.6亿m3。水库建成运用近50年来,在防洪、供水,发电、灌溉等方面发挥了巨大作用。为首都及下游地区经济建设做出了重大贡献。
1 PROBLEM PROBLEMS Guanting Reservoir is the first large-scale reservoir built in our country after the founding of People’s Republic of China. It is the key control project of Yongding River. It is an important barrier blocking the flood of Yongding River from Beijing and the main water supply source of Beijing. Guanting Reservoir controls the upper 43402km2 watershed area, accounting for 91% of Yongding River total drainage area. The reservoir started construction in 1951 and was put into operation in 1954. After the dam was raised in 1989, the total storage capacity was 4.16 billion m3. Over the past 50 years since its completion, the reservoir has played a significant role in flood control, water supply, power generation and irrigation. For the capital and the economic construction of the lower reaches made a significant contribution.