Flood event identification method and device, computer equipment and storage medium

Abstract

The invention relates to a flood event identification method and device, computer equipment and a storage medium. The method comprises the following steps: acquiring an outlet flow time sequence, a solar surface rainfall time sequence and a daily average temperature time sequence corresponding to a target drainage basin; determining a dominant time period corresponding to each runoff type according to the time sequence of the solar surface rainfall, the time sequence of the daily average temperature and a preset runoff division rule; the runoff types at least comprise base flow, snow melting runoff and ice melting runoff; analyzing rainfall event information corresponding to the target drainage basin based on the solar surface rainfall time sequence, and analyzing flood event information based on the outlet flow time sequence; and determining cause identification results corresponding to the flood events according to the rainfall event information and the flood event information corresponding to the target drainage basin and the dominant time periods of the various types of runoffs. The method is high in accuracy and wide in application range, and enriches the research content of current cold region flood simulation and forecast.

Description

technical field [0001] The present application relates to the technical field of water conservancy engineering, in particular to a flood event identification method, device, computer equipment and storage medium. Background technique [0002] With the frequent occurrence of extreme weather events, heavy rain events in large river basins such as the Yangtze River Basin and the Yellow River Basin and small and medium-sized rivers in my country are on the increase, often causing serious flood disasters, which pose a serious threat to my country's economic property and life safety. Therefore, in my country's major rivers and their main tributaries, many large-scale water conservancy projects have been completed, forming large-scale and complex-structured basin reservoirs, and constructing a basin flood control system. The completion and safe operation of water conservancy projects depend heavily on accurate watershed hydrological forecast information. In order to obtain accurat...

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Problems solved by technology

[0004] However, the above-mentioned flood event identification method only considers the impact of rainfall on flood, which has a single factor and poor accuracy, and cannot be used for flood events in snow-covered and glacier-covered areas.

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