| 摘要: |
| 1999年太湖流域梅雨期自6月7日入梅,历时43d,流域面平均梅雨总量670mm,是常年的3倍,致使流域发生了本世纪以来的特大洪水流域面平均连续最大7d,15d,30d,45d,60d,90d雨量均超过历史暴雨实测最大值,接近或超过了百年-遇,流域降雨空间分布南部大于北部,浙西区、湖区、杭嘉湖区和浦东、浦西区明显大于湖西区和武澄锡区,太湖最高水位达到5.08m,超过 1991年的最高历史水位 0.29m 1999年太湖洪水丰富了人们对大湖流域降雨特性的认识,并促使作者就流域骨干工程合理调度、流域防洪的蓄泄关系、流域防洪与区域排涝的关系以及正在进行的下-轮防洪规划的重点等-系列问题进行进-步思考. |
| 关键词: 大湖流域 洪水 水利工程 规划 |
| DOI：10.18307/2000.0102 |
| 分类号: |
| 基金项目: |
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| 1999 Catastrophic Flood in Taihu Basin and the Consideration for Taihu Flood Control Planning |
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WU Tailai
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Taihu Basin Authority, Ministry of Water Resources, Shanghai 200434, P. R. China
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| Abstract: |
| The monscMDn-raining season in the Taihu Basin, started on June 7,1999, lasted for 43 days.Estimates revealed that the total average rainfall reached 670mm, which was 3 times higher as compared with normal years and closely and/or more rated at a return period of 1 in 100 years.Comparing with the flooding in 1954 and 1991, the rainfalls of 7-day, 15-day, 30-day, 45-day, 60-day and 90-day in 1999 exceeded the historical valuevS ever recorded.The rainfall wavs unevenly distributed, being heavier in south than in north of the Basin,i.e.the precipitations in districts of West Zhejiang Province, Taihu Lake, Hangjiahu Lake, Pudong and Puxi(Shanghai) were obviously larger than of that of other districts.The highest water level in Taihu Lake reached 5.08m a.s.l, 0.29m up to the historic 4.79m ever recorded during the 1991 flood.The 1999 catastrophic flood had brought a loss of 131×108 RMB to the basin economy.It impels us to reexamine the regulation of the water conservancy project, avs well as the relation between flood storage and discharge, flood control in overall basin and flood discharge in each district.Moreover, some suggestions on the reasonable management of key projects in the basin, and the amendments of flood control planning in the 21 century are put forward. |
| Key words: Taihu Basin flood control water conservancy projects planning |
