Anode Boosting Electro-Osmosis for Soft Clay Consolidation

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Solution Overview

Problem

Conventional methods for consolidating soft clay, such as vacuum preloading, face inefficiencies in water discharge and drainage, particularly in thoroughly removing water from the soil and enhancing pumping and drainage efficiency.

Innovation Solution

A system combining anode boosting and electro-osmosis, utilizing a vacuum preloading system with anode and cathode tubes, a power supply, a boosting device, and a pumping and drainage device, where the tubes are connected through pipelines and an automatic power supply switching system to optimize water drainage by alternating the roles of anode and cathode tubes under controlled pressure and power switching.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If conventional vacuum preloading is used for soil consolidation, then the basic drainage function is achieved, but water discharge is incomplete and pumping efficiency is low

Engineering Contradiction:
Improvepumping and drainage efficiencyVSAvoidwater discharge completeness
Core Design Contradiction:
ProductivityVSReliability

Solution Approach 1:

The patent combines vacuum preloading with electro-osmosis by integrating anode tubes, cathode tubes, and a power supply into the vacuum preloading system. This merging of mechanical vacuum drainage with electro-osmotic force enables more thorough water removal from soft clay, directly addressing the incomplete water discharge and low pumping efficiency problems of conventional vacuum preloading alone.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The patent utilizes pneumatic principles by introducing a boosting device that injects gas into the anode tubes to create high-pressure zones. This pneumatic boosting action enhances the electro-osmotic force and facilitates more complete water discharge from the soil, thereby improving both pumping efficiency and water discharge completeness.

Inventive Principle:
Principle #29Pneumatics and hydraulics

2Productivity

If cathode tubes and anode tubes are continuously connected to power supply, then electro-osmosis is maintained, but energy consumption increases and water drainage is incomplete in certain regions

Engineering Contradiction:
Improvewater drainage completenessVSAvoidpower supply energy consumption
Core Design Contradiction:
ProductivityVSUse of energy by moving object

Solution Approach 1:

The patent implements periodic action by using an automatic power supply switching system that alternates the connection between anode tubes and cathode tubes. The system switches connections periodically to ensure complete water drainage in different regions while reducing overall energy consumption compared to continuous operation. This periodic switching also prevents energy waste in regions where water drainage is already complete.

Inventive Principle:
Principle #19Periodic action

Solution Approach 2:

The patent applies dynamics by making the electrical connection configuration changeable through the automatic power supply switching system. The system dynamically adjusts which tubes are connected to the power supply and which are connected to the boosting device, optimizing energy usage based on real-time drainage requirements and soil conditions, thereby reducing unnecessary energy consumption while maintaining drainage completeness.

Inventive Principle:
Principle #15Dynamics

3Force

If boosting device is continuously connected to anode tubes, then water gathering effect is enhanced, but pumping and drainage efficiency decreases due to water accumulation

Engineering Contradiction:
Improvewater gathering forceVSAvoidpumping and drainage efficiency
Core Design Contradiction:
ForceVSProductivity

Solution Approach 1:

The patent uses periodic action by alternating the connection configuration between boosting device and pumping device through the automatic power supply switching system. The system periodically switches from a configuration where the boosting device gathers water to one where the pumping device drains water, preventing water accumulation and maintaining high pumping and drainage efficiency while still providing the water gathering effect when needed.

Inventive Principle:
Principle #19Periodic action

Solution Approach 2:

The patent ensures continuity of useful action by seamlessly transitioning between the boosting phase and pumping phase through the automatic switching system. The system maintains continuous water removal effectiveness by immediately following the water gathering phase with the water draining phase, eliminating idle time and ensuring that the useful action of water removal continues without interruption, thereby maintaining high productivity.

Inventive Principle:
Principle #20Continuity of useful action

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 approach ensures more thorough water discharge and improved pumping and drainage efficiency by leveraging high-pressure gas and automatic power switching to redirect water flow, ensuring complete drainage and enhanced soil consolidation.

Implementation Method 1

a system for consolidating soft clay by combined anode boosting and electro-osmosis

Methodology Applied
Scientific EffectElectro-osmosis: Electro-Osmosis

Implementation Method 2

after the anode tubes are configured with a boosting device, a gas can be fed into the anode tubes; under the combined action of the high-pressure gas and the anode tubes, water is squeezed to the cathode tubes

Methodology Applied
Scientific EffectHigh-pressure gas compression: Compression

Data Source

PatentUS10370814B2System for consolidating soft clay by combined anode boosting and electro-osmosis and method for consolidating soft clay
Publication Date: 2019.08.06 WENZHOU UNIV
  • US10370814B2 patent drawing

AI summary

The present invention discloses a system for consolidating soft clay by combined anode boosting and electro-osmosis, comprising a vacuum preloading system, wherein the vacuum preloading system comprises anode tubes, cathode tubes, a power supply, a boosting device, sealing cloth and a pumping and drainage device; the sealing cloth is covered above soft clay; air vents are formed on side faces of the cathode tubes and the anode tubes; the cathode tubes and the anode tubes are connected to a boosted pumping and drainage pipe above the soft clay through pipelines; the boosted pumping and drainage pipe is configured with the boosting device and the pumping and drainage device; and, the anode tubes and the cathode tubes are connected to an anode and a cathode of the power supply, respectively. The present invention further provides a method for consolidating soft clay by using the system for consolidating soft clay by combined anode boosting and electro-osmosis. In the present invention, after the anode tubes are configured with a boosting device, a gas can be fed into the anode tubes; under the combined action of the high-pressure gas and the anode tubes, water is squeezed to the cathode tubes, so that water can be drained from the soil more thoroughly.