This data set is obtained through the simulation calculation of the self-developed two-dimensional ice hydrodynamic model, including 702 flood inundation process map data of the wuergeliang Lamawan reach of the Yellow River during the river closure period and the river opening period, with a field a1-38 representing the inundation depth. The data set is only applicable to the ice flood prevention and control of the wuergeliang Lamawan reach of the upper and middle reaches of the Yellow River (with a total length of about 74km, located in the Inner Mongolia Autonomous Region).
This data set is all model simulation data, which is calculated by setting initial conditions such as temperature and flow. The initial condition value comes from the river water regime data of the water regime information network of the Yellow River Water Resources Commission.
Using the self-developed two-dimensional ice hydrodynamic model, the inundation depth values of 54 groups of ice flood prevention and control schemes in the wuergeliang Lamawan reach of the Yellow River during the river closure period and the river opening period are simulated and calculated respectively. The model is programmed with FORTRAN language, and can simulate the process of flood routing, water temperature change, ice flow density, thermal growth and melting of ice sheet. The governing equations of the model based on water vapor heat exchange include: two-dimensional shallow water governing equations, water temperature convection and diffusion, ice formation in water, surface flow ice, ice sheet growth and ablation, etc. the partial differential equations are discretized by finite volume (FVM) integration on unstructured grids. The convective flux is calculated by Osher scheme, LSS scheme, roe scheme and Steger warming scheme respectively; Time integration mainly adopts Euler explicit scheme, first-order Euler implicit scheme or two-step implicit scheme; The discrete algebraic equations are solved by the prediction and correction method (explicit format).
The two-dimensional ice hydrodynamic model used is a professional software independently developed by the Yellow River water conservancy Research Institute of the Yellow River Water Conservancy Commission, which is specialized in water conservancy calculation. It has passed the evaluation of the national prevention and control office, and has been officially selected into the list of flood risk mapping projects in key areas. The model calculation results are reliable.
| # | number | name | type |
| 1 | 2018YFC1508400 | Research and demonstration on Key Technologies of ice flood monitoring and disaster prevention and control in the Yellow River | National key R & D plan |
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CSTR:11738.11.ncdc.iceflood.db2351.2022
10.12072/ncdc.iceflood.db2351.2022