Method for producing a sealing base in the ground

Patent metadata

Field	Value
Publication number	US-11459724-B2
Application number	US-201916759904-A
Country	US
Kind code	B2
Filing date	Sep 10, 2019
Priority date	Nov 12, 2018
Publication date	Oct 4, 2022
Grant date	Oct 4, 2022

Abstract

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.

First claim

The invention claimed is:

1. 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,
characterized in 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, the sealing gel being a flowable aqueous solution,
the solid base plate and the underlying gel base form the sealing base,
the solid base plate is anchored in underlying soil layers by an anchoring means, and
the sealing gel is introduced into the second soil layer using one or more grouting lances.

2. Method according to claim 1 ,
characterized in that
first the gel base and then the base plate is created.

3. Method according to claim 1 ,
characterized in that
a suspension containing cement is used as a curable compound.

4. Method according to claim 3 ,
wherein the suspension containing cement is a cement-bentonite suspension.

5. Method according to claim 1 ,
characterized in that
the curable grouting compound is injected by means of a grouting lance, which is introduced into the ground as far as the envisaged soil layer.

6. Method according to claim 1 ,
characterized in that
the sealing gel contains silicate, water glass and/or silica sol as components.

7. Method according to claim 1 ,
wherein the sealing gel is injected into the second soil layer after the grouting compound is injected into the first soil layer.

8. Method according to claim 1 ,
characterized in that
to form an excavation pit enclosure, an approximately vertical enclosure wall is created, at which the sealing base adjoins.

9. Excavation pit enclosure with an approximately vertical enclosure wall,
characterized in that
inside the enclosure wall there is formed a sealing base by the method according to claim 8 .

10. Sealing base in the ground, produced by the method according to claim 1 , wherein in a first soil layer a plurality of sealing elements made from a curable grouting compound is created, which elements adjoin one another or overlap and form a solid base plate thereby,
characterized in that
in a second soil layer, which lies beneath the first soil layer for the solid base plate, a gel base is created using a sealing gel, the sealing gel being a flowable aqueous solution,
the solid base plate and the underlying gel base form the sealing base,
the solid base plate is anchored in underlying soil layers by an anchoring means, and
the sealing gel is introduced into the second soil layer using one or more grouting lances.

Assignees

• Bauer Spezialtiefbau

Inventors

• Hartmann Dominik
• Hartmann Albert

Classifications

• E02D3/12 Primary

  Consolidating by placing solidifying or pore-filling substances in the soil (making piles E02D5/46; soil-conditioning or soil-stabilising materials C09K17/00; consolidation of ground around boreholes or wells E21B43/025) · CPC title

• E02D5/46

  making in situ by forcing bonding agents into gravel fillings or the soil (consolidating soil in general E02D3/12) · CPC title

• E02D31/12

  against upward hydraulic pressure · CPC title

• E02D27/50

  Anchored foundations · CPC title

• E02D19/12

  by damming or interrupting the passage of underground water · CPC title