Research on Flood Disaster Patterns of Newly Built Urban Infrastruc-ture during Extreme Rainstorms
Aiming to investigate the flood disaster patterns of urban infrastructure under extreme rain-storms,a two-dimensional GPU-accelerated surface water flow and transport model(GAST)was con-structed for a newly built 330 kV substation in Xi'an.The model was used to simulate the flooding pro-cess in the substation area under different rainfall conditions and to compare and analyze the response of the station area's water levels to different rainfall intensities..The results indicated that:① The wa-ter level in the substation area initially increased with the duration of the rainfall and then gradually de-creased.② As the design rainstorm return period increased,the highest water level in the substation area also increased,gradually stabilizing at the 300-year return period(P).When P≤300,the increase in water level accounted for 74.31%of the total.③ The 300-year return period was the inflection point for the water level increase.It was recommended to consider various factors including industry characteristics,economic feasibility,watershed runoff conditions,and flood risk when determining the flood defense level.The study elucidates the quantitative relationship of extreme rainfall on the de-sign elevation of substations and provides important reference for flood control in substations and other new urban infrastructure under extreme rainstorms.
万方数据
维普
