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采用MIKE Flood集成模型,以北京市亦庄经济技术开发区为案例,针对现状和未来建设人工湿地两种情景,对1年、5年、10年暴雨重现期下的淹没特性进行了雨水管网和地面流的一、二维集成模拟。模拟结果表明,在现状条件下,3种暴雨重现期都会产生淹没区域,尤其是在5年以上重现期时整个区域的10%都会被淹没;未来建设人工湿地可比现状减少20%左右的淹没面积,但其作用范围是人工湿地上游区域,对其他区域则没有明显作用。利用这些结果可进行暴雨危害的风险评估,并对各种工程方案进行比较分析,以寻找减轻暴雨淹没损失的最佳途径。
Using MIKE Flood integration model and Beijing Yizhuang Economic and Technological Development Zone as a case study, the current situation and the future construction of constructed wetlands were investigated. The submerged characteristics of stormwater under the recurrence periods of 1 year, 5 years and 10 years were analyzed. One or two dimensional integrated simulation of ground flows. The simulation results show that under the current conditions, all three types of heavy rainfall will produce inundation area, especially 10% of the whole area will be inundated when the reproduction period is longer than 5 years. The construction of constructed wetlands in the future can be reduced by about 20% Submerged area, but its scope of action is upstream of the constructed wetland, but has no obvious effect on other areas. These results can be used to assess the risk of torrential rains and to compare and analyze various engineering options to find the best way to mitigate the loss of torrential rains.