CAJ | 학술논문

城市洪水模拟通常包括城市内河流模拟和城区平面漫流模拟.一维水动力学模型可以较好地模拟河流和水工建筑物的水流特征,二维水动力学模型模拟水平漫流可以取得令人满意的结果.而一维二维耦合模型可以充分发挥两种模型的各自特色和优势,解决两种模型分别使用时经常遇到的空间分辨率和计算精度等问题.本文通过建立一维二维水动力耦合模型,针对不同的典型降雨过程,对该模型系统进行验证和分析,并最终用于模拟济南市不同重现期下洪水淹没情况.模拟结果表明,该模型能够有效地模拟复杂市区降雨积水过程,能够提供可信度较高的城市洪水潜在风险评估,可为城市防汛预警决策提供技术指导.
성시홍수모의통상포괄성시내하류모의화성구평면만류모의.일유수동역학모형가이교호지모의하류화수공건축물적수류특정,이유수동역학모형모의수평만류가이취득령인만의적결과.이일유이유우합모형가이충분발휘량충모형적각자특색화우세,해결량충모형분별사용시경상우도적공간분변솔화계산정도등문제.본문통과건립일유이유수동력우합모형,침대불동적전형강우과정,대해모형계통진행험증화분석,병최종용우모의제남시불동중현기하홍수엄몰정황.모의결과표명,해모형능구유효지모의복잡시구강우적수과정,능구제공가신도교고적성시홍수잠재풍험평고,가위성시방신예경결책제공기술지도.
The urban flood simulation is usually consisted of the urban river simulation and the simulation of the plane overflow within an urban area The flow characteristics of rivers and hydraulic buildings can be better simulated by 1D hydrodynamic model.while satisfactory result Can be got from the simulation on the plane overflow with 2D hydrodynamic model Therefore,the coupling of beth the models Can fully exert the own characteristics and advantages of them,and then solve the problems from spatial resolution and calculation accuracy during their respective use.Based on the establishing a 1D and 2D coupling hydrodynamic model,the model system is verified and analyzed in accordance with various typical precipitation processes,and finally the flood-inundations of Jinan City under the conditions of different flood return periods are simulated.The simulations show that the complicated process of water logging from precipitation in urban area can be effectively simulated by the model,and then the assessment on the potential risk from urban flood can be provided with higher reliability for guiding the decision-making for urban flood control