Red-Bed Flash Flood Modeling for Soil Moisture and Infiltration
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current flash flood simulation methods fail to accurately consider the unique characteristics of red-bed soft rock regions, such as low permeability, high water storage, and susceptibility to weathering, leading to inaccurate simulations of soil moisture dynamics and complex landforms, which affects flood forecasting.
Innovation Solution
A flash flood simulation method that includes obtaining water storage in the vegetation root zone, total infiltration rate in the unsaturated zone, saturation overland flow and interflow based on a vertical distance from the wetting front to the slope surface, and updating the average saturated groundwater table depth, using specific correction parameters to reflect the geological characteristics of red-bed soft rock regions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If generic soil hydrological parameters are used in flash flood simulation methods, then the simulation process is simple and quick, but the accuracy of simulating red-bed soft rock region characteristics is poor
Solution Approach 1:
The patent applies local quality by developing region-specific hydrological parameters tailored to red-bed soft rock characteristics rather than using generic parameters. The invention introduces specific parameters including red-bed soft rock permeability, water storage capacity, and weathering susceptibility to accurately simulate the unique hydrological behavior of this terrain type, thereby resolving the contradiction between simulation accuracy and parameter complexity.
Solution Approach 2:
The patent implements parameter changes by dynamically adjusting hydrological parameters based on local geological characteristics and real-time conditions. The invention modifies standard simulation parameters to include red-bed specific properties such as variable permeability, high water storage capacity, and weathering rates, enabling accurate simulation while maintaining computational efficiency through targeted parameter optimization.
2Measurement precision
If refined quantitative characterization of soil moisture is implemented, then the simulation of soil moisture dynamics becomes accurate, but the computational time and complexity increase
Solution Approach 1:
The patent applies parameter changes by optimizing soil moisture characterization parameters to balance accuracy and computational efficiency. The invention introduces refined parameters such as volumetric water content, field capacity, and wilting point specific to red-bed soft rock, while using efficient calculation methods that avoid overly complex modeling approaches, thus achieving accurate soil moisture simulation without excessive computational time.
3Reliability
If models account for complex landform characteristics, then the simulation capability for flash flood forecasting improves, but the model complexity and difficulty of application increase
Solution Approach 1:
The patent applies local quality by developing a simplified yet accurate model specifically tailored to red-bed soft rock landforms. The invention incorporates local geological characteristics such as rock type, weathering degree, and terrain morphology into the model framework, enabling reliable flash flood forecasting for this specific environment while avoiding the complexity of attempting to model all possible landform types universally.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The method provides accurate flash flood forecasting by dynamically adjusting hydrological model parameters, improving the accuracy of flood simulations and supporting disaster prevention efforts in red-bed soft rock regions.
Implementation Method 1
obtaining an actual evaporation at any point in the vegetation root zone
Implementation Method 2
obtaining a total infiltration rate in an unsaturated zone based on an infiltration model
Implementation Method 3
obtaining a saturation overland flow and an interflow based on a vertical distance from a wetting front to a slope surface
Data Source
AI summary
A flash flood simulation method includes: obtaining a water storage in a vegetation root zone and obtaining an actual evaporation at any point in the vegetation root zone within a target watershed; obtaining a total infiltration rate in an unsaturated zone based on an infiltration model; obtaining a saturation overland flow and an interflow based on a vertical distance from a wetting front to a slope surface; updating an average saturated groundwater table depth based on the interflow and the total infiltration rate of the unsaturated zone; constructing a flash flood model for the target watershed based on the water storage of the vegetation root zone, the actual evaporation, the total infiltration rate of the unsaturated zone, the saturation overland flow, the interflow, and the average saturated groundwater table depth; and simulating an event-based flood hydrograph of the target watershed based on the flash flood model for the target watershed.