基于FLOW 3D的山丘区小流域山洪演进三维数值模拟研究

Three-dimensional numerical simulation of mountain torrent evolution in small watershed in hilly area based on FLOW 3D

由于山洪灾害涉及气象学、水文学、水力学及动力学等多个学科,在演进机理研究方面还不够全面。为研究山洪灾害演进机理,以毛公洞小流域为例,借助FLOW 3D软件进行三维数值模拟,建立了河道两岸300m范围内实体地形三维数值模型,对山洪灾害暴发的动态过程进行了模拟计算,在此基础上分析了山洪灾害演进机理,该结果对后续山洪灾害成灾机理及演变分析具有一定的参考意义。

Since mountain flood disasters involve many disciplines such as meteorology,hydrology,hydraulics and dynamics,the research on the evolution mechanism is not comprehensive enough.In order to study the evolution mechanism of mountain flood disasters,taking Maogongdong small watershed as an example,using FLOW 3D software to carry out three-dimensional numerical simulation,a three-dimensional numerical model of the solid terrain within a range of 300 meters on both sides of the river was established,and the dynamic process of mountain torrent disasters was simulated and calculated.On this basis,the inundation mechanism of mountain flood disasters is analyzed,and the results have certain reference significance for subsequent analysis of the mechanism and evolution of mountain torrent disasters.