Degradable Erosion Control Block with Latticed Frame
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Solution Overview
Problem
Erosion control on hills or shorelines is challenging due to the instability of added soil, which is prone to further erosion and lacks support for vegetative growth, making it difficult to stabilize the land effectively for an extended period while blending into the natural background.
Innovation Solution
An erosion control kit comprising a degradable box-shaped frame of latticed ligament with a degradable fabric and soil, along with anchors to secure the frame to the substratum, forming a terrain that covers large areas and allows for plant growth, eventually degrading over time to integrate with the natural environment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If added soil is used to remediate eroded land, then the land can support vegetative matter, but the added soil is prone to further erosion and lacks stability
Solution Approach 1:
The system segments the soil stabilization function into multiple components: a rigid frame structure provides mechanical support, degradable fabric holds the soil in place, and anchors secure the entire assembly to the substratum. This segmentation allows each component to address specific stability issues while working together as an integrated system.
Solution Approach 2:
The system combines multiple materials with different properties: a rigid frame (metal or composite), degradable fabric (natural or synthetic fibers), soil, and anchors. This composite approach creates a hybrid structure that leverages the strengths of each material - the frame provides structural integrity, the fabric retains soil, and the anchors provide fixation - to overcome the limitations of using soil alone.
2Duration of action of stationary object
If a stable soil system is provided for several years, then erosion is prevented and vegetation grows, but the system must eventually degrade to blend into the natural landscape
Solution Approach 1:
The system transitions from a static, permanent structure to a dynamic, time-dependent system. The frame provides initial structural stability, while the degradable fabric gradually breaks down over time. This dynamic evolution allows the system to maintain stability during the vegetation establishment period (several years) and then naturally integrate into the landscape as components degrade, achieving both long-term stabilization and eventual environmental blending.
Solution Approach 2:
The system utilizes temporal parameter changes, particularly in the degradation rate of fabric components. By selecting materials with appropriate degradation timelines, the system maintains its structural integrity and soil-stabilizing properties for several years while gradually transforming back into natural landscape elements. This controlled parameter change enables the dual requirement of long-term stability followed by seamless environmental integration.
3Reliability
If degradable fabric is used inside the frame, then soil is retained and plant growth is supported, but the fabric must degrade over time to integrate with the environment
Solution Approach 1:
The degradable fabric performs preliminary action by providing immediate soil retention and creating a protective environment for seed germination and early plant growth. The fabric is designed to fulfill its soil-retention function during the critical establishment period, after which it naturally degrades. This preliminary protective action ensures vegetation success while the fabric subsequently integrates into the landscape, eliminating the need for removal or replacement.
Data Source
AI summary
Provided is an erosion control kit (ECK) comprising: (I) an erosion control block comprising: (a) a degradable box-shaped frame of latticed ligament with a top, bottom and four sides; (b) a degradable fabric framed just inside the top, bottom and four sides of the frame and defining an interior space; and (c) soil substantially filling the interior space; and (II) one or more anchors configured to bind a bottom portion of the frame to a substratum. Related erosion control features and methods are further provided.