Double-Layer Mesh Vegetation Blanket for Slope Stabilization
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Solution Overview
Problem
Conventional netted vegetation blankets have low porosity, a loose structure, and are prone to deformation, leading to poor vegetation growth and soil erosion, with a middle fiber layer susceptible to damage from worms and limited flexibility, making them ineffective for slope stabilization and soil conservation.
Innovation Solution
A double-layer mesh netted vegetation blanket with loop-knitted borders and staggered, curved thin threads that allow for flexibility, elasticity, and adjustable voids for plant growth, enabling secure attachment and easy stretching for terrain adaptation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a conventional three-layer netted vegetation blanket is used with natural fiber middle layer, then the blanket can be manufactured, but the fiber layer is damaged by worms causing reduced structural strength
Solution Approach 1:
The patent replaces the natural fiber middle layer with a geotextile layer made of synthetic materials that are resistant to worm damage while maintaining the required structural strength and soil retention properties. This composite material approach solves the reliability issue without compromising strength.
2Ease of manufacture
If the netted vegetation blanket has a loose layered structure, then the blanket can be manufactured easily, but grass seeds are washed away by rainwater
Solution Approach 1:
The patent modifies the structural parameters of the blanket by adding a specific mesh configuration with defined aperture sizes and a geotextile layer with controlled porosity. This changes the physical parameters to retain seeds while maintaining ease of manufacture through standardized production processes.
3Strength
If the netted vegetation blanket has fixed corrugations formed by heating, then the blanket provides soil retention, but the blanket cannot be wound into roll form for storage and transport
Solution Approach 1:
The patent replaces fixed corrugations with a dynamic mesh structure that can adapt its shape. The geotextile layer with embedded mesh provides soil retention when deployed but can be easily wound and stored when not in use, transitioning between functional states as needed.
4Strength
If the netted vegetation blanket has low porosity, then the blanket structure is dense, but plant seeds cannot grow upward through the blanket
Solution Approach 1:
The patent applies different porosity characteristics to different regions and layers of the blanket. The geotextile layer has controlled porosity that provides overall structural density while specific areas have enhanced permeability to support seed germination and plant growth, creating local quality variations that satisfy both requirements.
Data Source
AI summary
An engineering-purpose netted vegetation blanket including a plurality of mesh units arrayed and interwoven into rows. The mesh units each have borders loop-knitted using threads to form a double-layer structure including an upper and a lower thread layer, and a plurality of curved threads that are so woven to locate between the upper and the lower thread layer and be sequentially arrayed and extended between two adjacent ones of the borders while protruding from a plane defined by the borders. The mesh units are so arrayed that the mesh units in any two adjacent rows are in staggered relation, such that a void is formed between any two adjacent mesh units.