Chamber-Based Electrode System for Soil Consolidation
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Solution Overview
Problem
Existing ground stabilization techniques face challenges in efficiently stabilizing fine soils due to high energy demands and acidic conditions caused by direct currents, which hinder the formation of solid minerals like calcium carbonate, and fail to effectively utilize biological species as catalysts for rapid soil consolidation.
Innovation Solution
A chamber-based system using electrodes that prevents fluid exchange and acidification, employing biological species and enzymes to induce electric polarization and catalyze the formation of solid minerals, avoiding direct currents and promoting homogeneous soil consolidation with low permeability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If direct current is applied to the soil for electro-kinetic consolidation, then pollutant removal and soil stabilization are achieved, but acidic conditions are generated at the anode which dissolve cementitious elements and cease bacterial activity
Solution Approach 1:
The patent introduces chambers as intermediary structures that contain the electrodes and prevent direct contact between the electro-kinetic system and the surrounding soil. These chambers act as a mediator that allows electrical current to be applied for pollutant removal while preventing the generation of harmful acidic conditions in the treated soil, thus resolving the contradiction between stabilization effectiveness and harmful acidification
Solution Approach 2:
The patent segments the treatment zone by dividing it into isolated chambers that contain the electrodes. This segmentation prevents the harmful acidic effects from propagating throughout the entire soil volume, allowing localized electro-kinetic action while protecting the broader soil matrix from acidification, thereby maintaining both stabilization effectiveness and soil health
2Quantity of substance
If high pressure is applied to facilitate solute infiltration in fine soils, then distribution of solutes is improved, but on-site energy demand increases significantly
Solution Approach 1:
The patent replaces the mechanical pressure system with an electro-kinetic system. Instead of using high pressure to force solutes into fine soils, the invention uses electrical fields to drive ion migration and electro-osmotic flow, achieving effective solute distribution in fine-grained soils without the high energy costs associated with pressurized injection systems
3Productivity
If biological species are introduced to catalyze soil consolidation, then consolidation speed is increased, but the process is hindered by acidic conditions from direct current
Solution Approach 1:
The chambers serve as a protective intermediary that enables the introduction of biological species into the soil. By containing the electrodes within isolated chambers, the system allows biological catalysts to be introduced and function in the surrounding soil without being exposed to the harmful acidic conditions generated at the electrode surfaces, thus maintaining both rapid consolidation and bacterial activity
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
The system efficiently solidifies soils by producing consolidated geo-materials, enhancing mechanical resistance and durability, while minimizing energy consumption and maintaining neutral pH, allowing for rapid and homogeneous soil stabilization within construction timeframes.
Implementation Method 1
A respective chamber comprising at least one electrode retains electrolysis within its body and prohibits acidification and gas generation in the ground volume while inducing electric polarization in its vicinity
Implementation Method 2
direct current results in electrolysis of water. This means that H2O is decomposed into oxygen gas, which is produced at the anode
Implementation Method 3
bacteria can be introduced into the ground to stimulate for instance chemical reactions such as the hydrolysis of urea, which results in the production of carbonate anions able to react with calcium cations to form calcium carbonate (CaCO3)
Implementation Method 4
bacteria can be introduced into the ground to stimulate for instance chemical reactions such as the hydrolysis of urea
Implementation Method 5
A respective chamber comprising at least one electrode retains electrolysis within its body and prohibits fluid exchanges between electrolysed liquids and the ground which is targeted for the treatment
Data Source
AI summary
The present invention relates to a method for inducing ground consolidation. The method comprises providing a first chamber in a first hole in the ground, and a second chamber in a second hole in the ground, the first and second chambers being liquid-impermeable and electrically conductive; providing a first electrolytic fluid in the first chamber and a second electrolytic fluid in the second chamber; placing at least a first electrode in the first chamber, and at least a second electrode in the second chamber, the first and second electrodes being operatively connected to a power supply; feeding consolidation fluids into the ground for feeding reactants of a consolidation process, and catalysers for the reactants into the ground; and applying to the first and second electrodes an electric current. The current causes the first electrode to operate as an anode and the second electrode to operate as a cathode thereby inducing electric polarization in the ground to cause the reactants and catalysers to cross paths to thereby cause consolidation of the ground.