CAJ | 학술논문

应用 MIKE 11和 MIKE 21分别构建北京市大兴区天堂河下游地区一维和二维水动力学模型,采用 DHI MIKE FLOOD耦合模拟了不同暴雨重现期下该地区的淹没特性。为分析该地区暴雨洪涝灾害的危险性,研究模拟了不同情景下各骨干渠道考虑限制下泄流量的排水状况,整个研究区淹没范围随时间的演变趋势和空间上的分布状况。研究结果表明,整个研究区现状防洪能力不足20 a一遇设计标准,且研究区局部区域最大淹没深度超过2 m,最大积水时间超过8 h,是防洪排涝的重点区域。该结果可为下一步暴雨风险评估,滞洪区的选址和闸坝调度方案的制定提供参考依据。
응용 MIKE 11화 MIKE 21분별구건북경시대흥구천당하하유지구일유화이유수동역학모형,채용 DHI MIKE FLOOD우합모의료불동폭우중현기하해지구적엄몰특성。위분석해지구폭우홍로재해적위험성,연구모의료불동정경하각골간거도고필한제하설류량적배수상황,정개연구구엄몰범위수시간적연변추세화공간상적분포상황。연구결과표명,정개연구구현상방홍능력불족20 a일우설계표준,차연구구국부구역최대엄몰심도초과2 m,최대적수시간초과8 h,시방홍배로적중점구역。해결과가위하일보폭우풍험평고,체홍구적선지화갑패조도방안적제정제공삼고의거。
MIKE 1 1 and MIKE 2 1 were used to develop one-and two-dimensional hydrodynamic models for the Tiantang River basin in Beij ing, they were then coupled by MIKE Flood to simulate hydrodynamic processes under different return-period rainfalls.The drainage conditions of main channels and evolution tendency of temporal and spatial distribution of submerged area were simulated to analyze hazard of flood disaster in the study area.It was found that flood capacity of Tiantang River basin could not meet 20-year return-period flood standard.Some regions of the study area showed waterlogging depth of >2 meters, duration of waterlogging was> 8 hrs.Such regions would be high-risk areas for flood control and drainage. These results provide reference for decision-making,such as selection of flood retarding basin and scheduling rule for control structures.