Hydraulic model for flood forecast of river basin with flood diversion and flood retarding ar-eas of Huaihe River

The core technique of flood forecast and pre-warning of a river basin is the numerical simulation of flood process in a complicated flood control system. According to the structural features, flood features, and flood process mechanism of a large and complicated flood control system, a 1D and 2D coupled numerical simulation model was established. The 1D model was used for the trunk river and main branches, and the 2D model was used for flood districts. The coupled 1D and 2D was used to simulate the flood regulation and process in rivers, lakes, flood districts, and floodways. A case study was conducted in the section from the Wangjiaba to Bengbu floodgates in the middle reach of the Huaihe River. The coupled model was employed to synchronously simulate the branch rivers and trunk flood of the river basin and to improve the accuracy of flood simulation, flood forecast, and regulation of the river basin. The parameters of the model for simulating the flood process of the Huaihe River Basin in 2003 were calculated and verified, and the flood process in 2007 was demonstrated. The simulated results show that the flood regulation and process can be accurately simulated by the proposed numerical model, and the accuracy requirements can be satisfied. Finally, the model was applied to the effect analysis of a four-grade emergency flood control plan in the Huaihe River Basin.

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RISK ASSESSMENT AND CLASSIFICATION FOR DETENTION BASINS BASED ON PARTICLE SWARM OPTIMIZATION - SUPPORT VECTOR REGRESSION (PSO-SVR) IN HUAIHE RIVER BASIN, CHINA

Environmental Engineering and Management Journal ◽

10.30638/eemj.2013.226 ◽

2013 ◽

Vol 12 (9) ◽

pp. 1843-1848 ◽

Cited By ~ 1

Author(s):

Junfei Chen ◽

Shihao Zhao ◽

Huimin Wang ◽

Shufang Zhao

Keyword(s):

Risk Assessment ◽

Particle Swarm Optimization ◽

Support Vector Regression ◽

River Basin ◽

Particle Swarm ◽

Support Vector ◽

Huaihe River Basin ◽

Huaihe River ◽

Swarm Optimization ◽

Detention Basins

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Responses of Hydrological Processes under Different Shared Socioeconomic Pathway Scenarios in the Huaihe River Basin, China

Water ◽

10.3390/w13081053 ◽

2021 ◽

Vol 13 (8) ◽

pp. 1053

Author(s):

Yuan Yao ◽

Wei Qu ◽

Jingxuan Lu ◽

Hui Cheng ◽

Zhiguo Pang ◽

...

Keyword(s):

Soil Moisture ◽

River Basin ◽

Climate Models ◽

Global Climate Models ◽

Hydrological Response ◽

Huaihe River Basin ◽

Huaihe River ◽

Infiltration Capacity ◽

Change Analysis ◽

Average Annual Runoff

The Coupled Model Intercomparison Project Phase 6 (CMIP6) provides more scenarios and reliable climate change results for improving the accuracy of future hydrological parameter change analysis. This study uses five CMIP6 global climate models (GCMs) to drive the variable infiltration capacity (VIC) model, and then simulates the hydrological response of the upper and middle Huaihe River Basin (UMHRB) under future shared socioeconomic pathway scenarios (SSPs). The results show that the five-GCM ensemble improves the simulation accuracy compared to a single model. The climate over the UMHRB likely becomes warmer. The general trend of future precipitation is projected to increase, and the increased rates are higher in spring and winter than in summer and autumn. Changes in annual evapotranspiration are basically consistent with precipitation, but seasonal evapotranspiration shows different changes (0–18%). The average annual runoff will increase in a wavelike manner, and the change patterns of runoff follow that of seasonal precipitation. Changes in soil moisture are not obvious, and the annual soil moisture increases slightly. In the intrayear process, soil moisture decreases slightly in autumn. The research results will enhance a more realistic understanding of the future hydrological response of the UMHRB and assist decision-makers in developing watershed flood risk-management measures and water and soil conservation plans.

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