Stream-river channel-estuary distributed flood process simulation method suitable for coastal region

Abstract

The invention discloses a'stream '-'riverway'-'estuary 'distributed flood process simulation method suitable for a coastal region, which comprises the following steps of: firstly, collecting basic information data of a system, and generalizing a complex watershed system; then establishing a multi-source heterogeneous data three-dimensional monitoring system for rainstorm flood of the watershed, and carrying out multi-source data fusion; secondly, a high-resolution stream-river channel-estuary distributed flood simulation model considering water engineering such as barrages and reservoirs in the drainage basin at the same time is constructed; and finally, completing model calibration and verification based on multi-source fusion data, and carrying out dynamic real-time simulation on a key section and an easily waterlogged region. By adopting the method, distributed flood simulation from a stream to an estuary can be realized, the effectiveness, scientificity and calculation precision of coastal region flood forecasting are expected to be improved, and flood simulation and prediction theories and methods are perfected.

Description

technical field [0001] The invention belongs to the field of flood forecasting, and in particular relates to a "stream"-"river course"-"estuary" distributed flood process simulation method suitable for coastal areas. Background technique [0002] Affected by many factors such as climate change, underlying surface, and human activities, extreme hydrometeorological events such as local catastrophic rainstorms, sudden floods, and super typhoons have increased in frequency and intensity in coastal areas of my country in recent years, seriously threatening the people. The safety of life and property restricts economic and social development. To reduce the economic losses caused by floods and improve the utilization of flood resources, flood forecasting is the most important basic link in non-engineering measures. Effective forecasting results can guide reservoir gates, dams and lakes to shift peaks and cut peaks to reduce losses. play an important role in disaster reduction. The...

AI Technical Summary

Problems solved by technology

[0003] Due to many factors such as lack of data, difficulty in numerical model coupling, unclear mutual feedback mechanism between models, and low calculation efficiency in traditional coastal flood simulation, usually only the flood information (points) of important sections in the watershed are given, which affects flood control. Timeliness and effectiveness, etc., the present invention proposes a "stream"-"river"-"estuary" distributed flood process simulation method suitable for coastal areas, to realize the refined real-time simulation of the whole basin from the stream to the estuary, Provide real-time and refined technical support for dynamic flood warning, disaster prevention and emergency transfer, etc.

Images