Jet Grouting Tool for Vertical Sealing Walls
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Solution Overview
Problem
The production of vertical seals in the ground is technically complex due to discontinuous processes and the need for large equipment, leading to long production times and risks of misalignments.
Innovation Solution
A method using a jet blasting tool with downward nozzles to inject a binder suspension at high pressure and speed, creating a continuous process for producing vertical sealing walls by cutting and mixing soil with a high-energy cutting jet, allowing for quick and inexpensive production of wall-shaped floor elements with depths up to five meters.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a discontinuous process with alternating up and down movements is used to produce vertical seals, then the production process can be carried out, but the production time increases and misalignments occur
Solution Approach 1:
The patent applies continuous forward movement of the jet grouting tool without alternating up and down movements. The tool moves continuously in one direction while creating the vertical seal, eliminating the time losses and misalignments associated with discontinuous processes. This is achieved by designing the jet grouting system to maintain continuous suspension injection and soil mixing action during forward progression.
2Productivity
If large equipment is used to produce vertical seals, then the production can be carried out, but the equipment complexity and cost increase
Solution Approach 1:
The patent uses high-pressure jet grouting technology where suspension is injected through nozzles at high velocity to erode and mix soil. This hydraulic/pneumatic approach replaces large mechanical drilling or mixing equipment, achieving vertical seal production with more compact and simpler equipment. The high-pressure fluid jets perform the soil cutting and mixing functions that would otherwise require large mechanical devices.
3Productivity
If high-pressure jet grouting is used to cut and mix soil, then wall-shaped floor elements can be produced quickly, but the equipment complexity increases
Solution Approach 1:
The jet grouting tool integrates multiple functions into a single device: it simultaneously cuts the soil, mixes the suspension with the eroded soil, and forms the vertical seal all in one continuous operation. This multi-functionality eliminates the need for separate cutting equipment, mixing equipment, and forming equipment, thereby reducing overall equipment complexity while maintaining high production speed.
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
Enables the rapid and cost-effective production of vertical sealing walls with uniform depth and width, suitable for small depths and various soil types, reducing equipment size and operational complexity.
Implementation Method 1
a high-energy cutting jet made of water or binding agent suspension directed downwards, the floor below the jet grouting tool is cut open or eroded
Implementation Method 2
A body is created in which the soil is loosened and mixed by the suspension jets
Data Source
Figure 1a~1c
Figure 2a~2b
Figure 3a~3b
AI summary
The method involves positioning a nozzle jet tool on a lower edge (11) of trench (10). A nozzle (9) of the jet tool is directed downwardly. The jet tool is moved along the lower edge with the activated jet (12). The suspension is discharged downwards into the bottom portion. The width of the trench is set in range of 30-50 cm, and a depth is set in range of 30-120 cm. An independent claim is included for a device for manufacturing floor elements.