Permeable Pavement Dirt Interception Grooves
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Solution Overview
Problem
Permeable pavements in urban areas face clogging issues due to dirt accumulation, which reduces their effectiveness in allowing water infiltration and increases the risk of traffic congestion and disease spread, as well as shortening their service life.
Innovation Solution
The permeable pavement structure is enhanced by incorporating a toothed groove base layer and dirt interception grooves with permeable coatings or fine sand, guiding dirt particles vertically and trapping them in the shallow layer, thereby reducing clogging and prolonging the pavement's service life without increasing thickness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional permeable pavement structure is used, then water permeability is achieved, but gap blocking occurs due to dirt accumulation reducing service life
Solution Approach 1:
The base layer is segmented into multiple functional zones: a toothed groove structure layer that directs dirt vertically, and underlying dirt interception grooves with permeable coatings. This segmentation captures dirt at different depths, preventing gap blocking and extending service life while maintaining water permeability.
2Ease of operation
If surface cleaning methods are used, then road surface blockage is reduced, but deeper permeable pavement cannot be reached
Solution Approach 1:
The toothed groove structure and dirt interception grooves are built into the pavement structure during construction. This preliminary action guides dirt particles vertically and traps them in accessible shallow layers before they can reach deeper blocking zones, making cleaning operations more effective and accessible.
3Reliability
If pavement thickness is increased to reduce clogging, then service life is extended, but construction complexity and cost increase
Solution Approach 1:
Rather than uniformly increasing pavement thickness, the invention applies specialized structures (toothed grooves and dirt interception grooves with permeable coatings) at specific critical locations in the base layer. This localized approach provides enhanced clogging resistance without proportionally increasing overall complexity.
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
This design effectively delays the clogging of the permeable pavement by trapping dirt in the shallow layer, allowing for easier high-pressure flushing and extending the service life of the pavement while maintaining water permeability.
Implementation Method 1
Another part of the water flow is slowly infiltrating, or migrated to the side by capillary phenomenon, so that the dirt in the other part of the water flow is trapped and stored in the grass
Data Source
AI summary
A method for permeable pavement of dirt interception comprises laying a permeable structure layer with a toothed groove between the base layer and the transition surface of the cushion layer or directly setting the upper surface of the cushion layer as a toothed structure; in the base layer, laying at least one layer of dirt interception trough; providing a water-permeable coating or fine sand at the bottom of the sewage interception trough; the present invention traps the dirt between the base layer and the cushion layer that are most likely to cause void blocking in the base layer, close to the shallow part of the surface layer is used to remove dirt by high-pressure flushing operations.