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以门头沟区赵家台小流域为研究对象,运用MIKE系列模型软件,将水文模型与一维河流水动力学模型进行耦合,模拟了该流域在“7·21”及10年一遇降雨情况下的降雨径流及不同下垫面状况影响下的坡面汇流入河等过程。模拟结果表明:坡面措施能够有效削减洪峰及洪量,防洪效果显著;沟道措施可在一定程度上提高过水能力,有效缩减淹没范围,减少洪灾损失,但对径流量无明显影响。
Taking Zhaojiatai catchment in Mentougou area as the research object, the MIKE series model software is used to couple the hydrological model with the one-dimensional river hydrodynamic model. The simulation results show that under the condition of “7 · 21 ” and 10-year rainfall Of rainfall runoff and surface conditions under the influence of different surface runoff into the river and other processes. The simulation results show that the slope measures can effectively reduce the flood peak and flood amount, and the flood control effect is significant. The channel measures can improve the water passing capacity to a certain extent, effectively reduce the flooding range and reduce the flood damage, but have no obvious effect on the runoff.