Ground Sealing Base Using Grout Plate and Gel Layer
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Solution Overview
Problem
Existing sealing base methods for deep excavation pits either require excessive material and labor for high-lying sealing bases with overlapping elements or result in deeper excavation pit enclosures for low-lying sealing bases with sealing gels, leading to inefficiencies and increased costs.
Innovation Solution
A method combining a solid base plate formed by a curable grouting compound with a gel base in a second soil layer, allowing for reduced overlap and increased tightness, with the solid base plate anchored in underlying soil layers, and the gel base providing additional sealing and stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If sealing elements are formed with greater overlap to ensure tightness, then sealing reliability is improved, but material expenditure and work input increase considerably
Solution Approach 1:
The invention combines two different sealing materials with complementary properties: a curable grouting compound that forms solid sealing elements for structural integrity, and a sealing gel that provides continuous tightness coverage. This composite approach allows reduced overlap of the grouting elements while maintaining sealing effectiveness, as the gel fills gaps and provides continuous coverage.
Solution Approach 2:
The invention applies different materials to different functional requirements: the curable grouting compound provides structural support and primary sealing at discrete locations, while the sealing gel provides continuous tightness and seals minor gaps. This local differentiation of material properties optimizes both material usage and sealing performance.
2Reliability
If sealing elements are formed with greater overlap to ensure tightness, then sealing reliability is improved, but work input increases considerably
Solution Approach 1:
The combination of grouting compound and sealing gel allows the grouting elements to be spaced further apart (reduced overlap) while the gel provides continuous sealing. This reduces the number of injection points and associated work input while maintaining sealing reliability.
3Strength
If anchoring elements penetrate the solid base plate to anchor it in lower-lying soil layers, then stability against water pressure is improved, but tightness may be compromised at the passage points
Solution Approach 1:
The sealing gel acts as an intermediary material that can accommodate and seal around anchoring elements. The gel's fluid nature allows it to flow around and seal the anchor passages, maintaining tightness while allowing anchors to penetrate the base plate for stability.
4Reliability
If a low-lying sealing base with sealing gel is used to achieve good sealing, then sealing tightness is improved, but excavation pit enclosure depth must be increased considerably
Solution Approach 1:
The invention transitions from a purely horizontal sealing approach (requiring deep walls) to a vertical positioning of the sealing base. By forming the solid base plate in the first soil layer and using anchoring elements to extend downward, the sealing effectiveness is maintained while allowing shallower enclosure walls.
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 enables a high-lying sealing base with enhanced tightness and stability while reducing production outlay and material usage, allowing for efficient and cost-effective sealing without the need for extensive overlap or deep excavation pit enclosures.
Implementation Method 1
by injection of a curable grouting compound a plurality of sealing elements is produced in a first soil layer, which elements adjoin one another or overlap, wherein the plurality of sealing elements forms a solid base plate following curing of the grouting compound
Implementation Method 2
in a second soil layer, which lies beneath the first soil layer for the solid base plate, a gel base is produced by injection of a sealing gel
Data Source
AI summary
The invention relates to a method for producing a sealing base in the ground in which by injection of a curable grouting compound a plurality of sealing elements is produced in a first soil layer, which elements adjoin one another or overlap, wherein the plurality of sealing elements forms a solid base plate following curing of the grouting compound. It is provided according to the invention that in a second soil layer, which lies beneath the first soil layer for the solid base plate, a gel base is created by injection of a sealing gel, and that the solid base plate and the underlying gel base form the sealing base. The invention further relates to a correspondingly produced sealing base.