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Enhanced method for estimation of flow intercepted by drainage grate inlets on roads
Jung Soo Kim1, Chang Jae Kwak2, Jun Beom Jo3
1Department of Civil Engineering, Bucheon University, Bucheon, 14623, South Korea.
Journal of Environmental Management
|November 14, 2020
Summary
Researchers developed a new equation to estimate how much water road drainage grates intercept. This equation improves the accuracy of determining grate placement for effective stormwater management.
Area of Science:
- Civil Engineering
- Hydraulic Engineering
- Environmental Engineering
Background:
- Effective road drainage is crucial for managing stormwater runoff and preventing flooding.
- Accurate estimation of flow intercepted by grate inlets is necessary for optimal placement and design of drainage systems.
- Existing empirical equations may lack sufficient accuracy for diverse road conditions.
Purpose of the Study:
- To develop a more accurate equation for estimating the flow intercepted by road drainage grate inlets.
- To determine the interception efficiency of grate inlets under various road and rainfall conditions.
- To provide a tool for optimizing the installation intervals of road drainage grates.
Main Methods:
- Conducted 720 experiments using a hydraulic model to simulate road drainage scenarios.
- Varied parameters including number of lanes (2-4), longitudinal road slope (2-10%), transverse gutter slope (2-10%), and design rainfall capacity (up to 30 years).
- Utilized regression analysis to derive a new intercepted flow estimation equation.
Main Results:
- Intercepted flow and interception efficiency increased with higher transverse gutter slopes and longer inlet lengths.
- The newly derived equation demonstrated higher accuracy compared to existing empirical methods.
- Experimental data provided a robust basis for the new flow estimation model.
Conclusions:
- The developed equation provides a more accurate method for estimating flow intercepted by road drainage grates.
- This improved estimation facilitates more effective determination of drainage grate installation intervals.
- The findings contribute to better road infrastructure design and stormwater management practices.
Keywords:
Grate inlet capacityHydraulic modelsIntercepted flow estimationSewer hydraulicsUrban drainageMore Related Videos
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