Đánh giá sự phù hợp của việc áp dụng mô hình thủy văn xác định biên mô hình thủy lực mô phỏng ngập lụt lưu vực sông Nhật Lệ, Quảng Bình

Abstract

The results of a research paper present to create of hydraulic boundary conditions based on the rainfall-runoff model, considering the efficiency and usefulness of applying the rainfall-runoff model to revert flood; determining the calculated hydrological characteristics; flood forecasting for basins with limited flow measurement stations; especially the ability to forecast floods and inundation in real-time from flood data at automatic rain gauge data. The results show the effectiveness of two types of lumped models (NAM) and semi-distributed models (DBTHL_2021) to meet the hydraulic boundary requirements for a hydraulic model to simulate floods at the Nhat Le river basin. Statistical indicators show the high reliability of the model parameter set for re-simulating the test flow results at Kien Giang station, the big floods in 2020 and 2022 has Nash > 0.8; PBias < 15% for model DBTHL_2021