| 摘要: |
| 为完善英德市防洪工程体系，提高整体防洪抗灾能力，英德市开展北江干堤防洪工程规划，将英德市防洪标准提高到50年一遇。由于英德市城区及北江干堤防洪保护区均位于飞来峡水库库区300年一遇洪水淹没范围之内，需要配合飞来峡水利枢纽的防洪调度，共同调蓄北江洪水，以确保北江大堤及其下游广州市、珠江三角洲地区的防洪安全。为论证英德市北江干堤防洪工程对飞来峡水利枢纽防洪调度的影响，通过英德城区局部调整与优化后的飞来峡水库动库容调洪二维数学模型模拟计算，就英德市北江干堤防洪工程对飞来峡水库防洪调度的影响进行了对比分析。分析结果表明，英德市北江干堤防洪工程建设后，英德区间的最大淹没库容明显减小，各防护区的淹没面积大幅度减小；同时，北江干流沿程水位和流量的提升速度加快，峰现时间提前。最后提出采取预留爆破口门和设置溢流堰口门等技术措施，将英德市北江干堤防洪工程的影响消减到工程实施前的水平。 |
| 关键词: 北江 堤防 飞来峡水利枢纽 防洪调度 数值模拟 |
| DOI： |
| 分类号:TV871 |
| 基金项目:国家自然科学基金重点项目(51139001 )；水利部公益性行业科研专项（201501007） |
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| Impacts of Yingde Beijiang stem dike flood control works on flood control operation for Feilaixia hydroproject |
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FENG Tao1, MA Zhen-kun2, XIE Chen3, WU Jing-xiu3
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1.Xinjiang Corps Survey and Design Institute (Group) Co., Ltd., Urumqi;2.Hohai University， Nanjing;3.State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering， Nanjing Hydraulic Research Institute， Nanjing
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| Abstract: |
| In order to improve the flood control system for Yingde city and enhance the anti-disaster ability all over the city, the Beijiang stem dike flood control planning has been drawn, which will update the flood control standard to the ever-highest level in 50 years. As the urban area of Yingde city and the protection area of Beijiang River stem dike flood control are both located within the inundated range of the 300-year-return flood, it is necessary to coordinate the flood control operation of the Feilaixia hydroproject to make proper regulation and storage of the flood in the Beijiang River to ensure the safety of the Beijiang River stem dike and its downstream area including Guangzhou city as well as the Pearl River Delta region. To well demonstrate the impacts caused by the constrution of the Yingde Beijiang River stem dike flood control works upon the flood control operation of the Feilaixia hydroproject, a comparative method is adopted to analyze the impacts given by the Yingde Beijiang River stem dike flood control works on the flood control operation of the Feilaixia hydroproject through analog computation of a two-dimensional mathematical model for partially-adjusted and optimized Feilaixia reservoir’s dynamic capacity regulation. The analysis results indicate that the maximum inundated capacity within the Yingde flooding area has a sharp decline after the completion of the Yingde Beijiang stem dike flood control works and so does the inundated area of each flood protection zone. Simultaneously, the water level raises and the discharge increases along the main stream of the Beijiang River and the peak time is advanced as well. Finally, some technical measures such as reserving the entrance of blasting and setting the overflow weir opening will be used to try to reduce the impacts of the Yingde Beijiang River stem dike flood control works to the level before the implementation of the project. |
| Key words: Beijiang River stem dike Feilaixia hydroproject flood control operation numerical simulation |
