A Dynamic Calculation Method of Rainfall Infiltration and Groundwater Outflow
A technology of underground runoff and groundwater, applied in the direction of calculation, data processing application, prediction, etc., can solve the problem of poor accuracy of rainfall outflow, and achieve the effect of accurate estimation
Active Publication Date: 2021-12-10
柳创新
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This method of single rainfall runoff calculation is suitable for flood forecasting, when the flood event begins, we do not know the value of the excess seepage rainfall index Φ and groundwater runoff, especially for continuous rainfall. A single calculation method, the accuracy of the rainfall outflow obtained is poor, and it is difficult to match the actual situation
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[0026] The objects and functions of the present invention and methods for achieving the objects and functions will be clarified by referring to the exemplary embodiments. However, the present invention is not limited to the exemplary embodiments disclosed below; it can be implemented in various forms. The essence of the description is only to help those skilled in the relevant art comprehensively understand the specific details of the present invention.
[0027] Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings, and related technical terms should be familiar to those skilled in the art. In the drawings, the same reference numerals represent the same or similar components, or the same or similar steps, unless otherwise specified. A method for dynamically calculating rainfall infiltration and groundwater outflow of the present invention will be described below through specific embodiments. In the prior art, the groun...
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The present invention provides a method for dynamically calculating rainfall infiltration and groundwater outflow, including the following method steps: a) constructing a distributed rainfall runoff model, and introducing groundwater storage parameters into the distributed rainfall runoff model; b) reading Rainfall time series table and linear reservoir coefficient; c) calculate rainfall infiltration and groundwater storage, and update rainfall infiltration and underground runoff after differential processing through hydrological balance equation; d) judge rainfall infiltration in all catchment areas Whether the groundwater flow rate and underground runoff have been updated, if yes, use the updated groundwater runoff as the groundwater outflow, if not, return to repeat step c). The present invention introduces groundwater storage parameters, considers rainfall infiltration with rainfall continuation and changes in groundwater storage, dynamically calculates groundwater outflow, and makes estimation of rainfall infiltration and groundwater runoff more accurate.
Description
technical field [0001] The invention relates to the technical field of flood control and rainfall prediction, in particular to a method for dynamically calculating rainfall infiltration and groundwater outflow. Background technique [0002] In the calculation method of rainfall runoff model in hydrology, methods such as unit ephemeris, linear reservoir, and motion wave are more commonly used. These methods calculate the effective rainfall (effective rainfall) through the rainfall runoff model to obtain the surface Therefore, before calculation, rainfall observations should be deducted from rainfall losses (rainfall losses include infiltration, low-lying water storage, and evaporation loss, etc.), while surface runoff also needs to be added to groundwater runoff (subsurface runoff), in order to obtain the overall outflow of the catchment area. [0003] The commonly used rainfall loss estimation method is the rainfall loss index method, that is, the rainfall loss is regarded ...
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IPC IPC(8): G06Q10/04
CPCG06Q10/04
Inventor 柳创新
Owner 柳创新