收录期刊

    高级检索

    苏丹东部阿尔巴阿特大坝溃决分析及启示

    Analysis and implications of the Al-Baha'at Dam failure in Eastern Sudan

    • 摘要: 受持续强降水影响,2024年8月24—25日,苏丹红海州阿尔巴阿特大坝溃决,造成至少60人死亡,多人失踪。基于全球降水测量计划(Global Precipitation Measurement,GPM)卫星监测降水数据,分析了阿尔巴阿特流域8月1—31日的降雨特征;据水文模型、开源数字高程模型和土地利用数据,计算了大坝入库流量;结合水位库容曲线和溃口最终宽度计算了溃坝流量,通过构建二维水动力模型分析了阿尔巴阿特大坝溃坝淹没影响。从降雨情况、洪水过程、工程运行情况等方面总结了溃坝原因,并从极端天气应对、风险预警、库容安全管理、坝体安全监测及提升大坝防洪韧性等方面提出了启示。

       

      Abstract: Triggered by persistent heavy rainfall, the Al-Baha'at Dam in the Red Sea State, Republic of Sudan, failed on 24-25 August 2024, leaving at least 148 people dead and many others missing. Using Global Precipitation Measurement (GPM) satellite rainfall data, we characterized rainfall over the Al-Baha'at basin from 1 to 31 August. A hydrological model forced by opensource digital elevation and land-use data was employed to estimate reservoir inflow, and the breach outflow was subsequently calculated with the stage-capacity curve and the final breach width. A two-dimensional hydrodynamic model was then constructed to simulate the inundation triggered by the dam failure. The causes of the collapse are examined in terms of rainfall patterns, flood processes, and dam operations, and recommendations are offered on extreme-weather response, risk earlywarning, reservoir safety management, structural monitoring, and enhancing dam flood resilience.

       

    /

    返回文章
    返回