Soil Stabilization via Selective Resin Injection
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Solution Overview
Problem
Conventional ground stabilization methods, such as piles and permeation grouting, face challenges in consolidating nonporous soils like clay and silt, requiring large equipment and often resulting in suboptimal pile placement and limited stability due to discontinuities in stabilization structures.
Innovation Solution
A ground stabilization system featuring a delivery channel with selectively openable apertures and a concentric member that allows controlled egression of grout or resinous material into the soil, forming a bonded structural element that remains in situ, enabling stabilization of a wide range of soil conditions without the need for pre-drilled boreholes and heavy equipment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If conventional piles are used to provide support, then load bearing capability is achieved, but large diameter equipment is required which poses access problems and increases costs
Solution Approach 1:
The patent replaces conventional mechanical pile driving systems with a chemical injection system. Instead of mechanically driving large diameter piles, the invention injects resinous material through a small diameter delivery channel to chemically bind soil particles, achieving load bearing capability through chemical consolidation rather than mechanical displacement
Solution Approach 2:
The invention changes the physical state and properties of soil through chemical injection. The resinous material transforms loose, unconsolidated soil into a bonded, load-bearing mass by filling interstitial gaps and creating chemical bonds between particles, fundamentally altering the soil's mechanical properties without requiring large equipment
2Strength
If larger diameter piles are used to provide sufficient end bearing capabilities, then load bearing capability is improved, but the piles need to be located further from the centre line of the structure
Solution Approach 1:
The invention replaces mechanical pile systems with fixed geometric constraints with a flexible chemical injection system. The delivery channel can be positioned precisely at any location including directly under the structure center line, and the resin injection creates radial consolidation patterns that provide end bearing capability without requiring large pile diameters or offset positioning
3Reliability
If permeation grouting is used to improve ground stabilisation, then soil stability is enhanced, but the process cannot be applied to cohesive soils such as fine silt and clay
Solution Approach 1:
The invention uses parameter changes through chemical composition rather than physical permeability. The resinous material is designed to penetrate cohesive soils through chemical interaction and adhesion rather than physical flow through pores. The material's rheological and chemical parameters are optimized to bind clay and silt particles, expanding applicability to previously treatable soil types
Solution Approach 2:
The invention creates a composite material system combining resinous binder with cohesive soil particles. The resinous material forms a matrix that binds clay and silt particles together, creating a composite structure that provides both stability and versatility across different soil types including those previously incompatible with permeation grouting
4Reliability
If permeation grouting is applied in cohesive soil layers, then ground stabilisation is attempted, but the continuity of the grouted column is disrupted rendering the treatment redundant
Solution Approach 1:
The invention creates a continuous composite column by injecting resinous material that binds soil particles together throughout the entire treatment zone. The resin forms a continuous matrix that bridges through cohesive soil layers, maintaining column continuity and structural integrity even through previously problematic soil transitions
Solution Approach 2:
The invention uses controlled parameter changes in the injection process to maintain continuity. By controlling injection pressure, volume, and timing, the resin is distributed continuously through the soil profile, creating an unbroken stabilised column that maintains structural integrity from surface to treatment depth
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 system provides controlled and precise application of grout or resinous material, enhancing soil stability by forming a continuous structural element, suitable for various soil types, including nonporous layers, and allows for reduced equipment size and cost, with improved pile placement and stability.
Implementation Method 1
Permeation grouting is a process of improving ground stabilisation by filling interstitial gaps between particles of soil with a liquid, such as grout, cement, polyurethane or other resinous substance
Data Source
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AI summary
The present invention relates to a ground stabilisation system and a support and a method of stabilising ground, more particularly to soil below a building or foundation of a structure. A system for soil consolidation is disclosed. It comprises: a delivery channel (10) that is closed at one end and adapted to receive a grout or resinous liquid (99). The delivery channel (10) has a plurality of apertures (20) that are selectively openable and closable, ideally by way of a concentric member (40) in order to permit filler or resinous material (99) to exude/egress from the delivery channel (10) into selected regions of surrounding soil at desired times, in a controllable manner, so as to create a stabilised volume of soil bonded to the delivery channel.