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EP3656926B1 - Procédé de stabilisation et d'élévation des bâtiments - Google Patents

Procédé de stabilisation et d'élévation des bâtiments Download PDF

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Publication number
EP3656926B1
EP3656926B1 EP18207351.0A EP18207351A EP3656926B1 EP 3656926 B1 EP3656926 B1 EP 3656926B1 EP 18207351 A EP18207351 A EP 18207351A EP 3656926 B1 EP3656926 B1 EP 3656926B1
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EP
European Patent Office
Prior art keywords
injections
fracture
injection
ground
compaction
Prior art date
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Active
Application number
EP18207351.0A
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German (de)
English (en)
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EP3656926C0 (fr
EP3656926A1 (fr
Inventor
Reiner Otterbein
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Keller Holding GmbH
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Keller Holding GmbH
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Publication of EP3656926C0 publication Critical patent/EP3656926C0/fr
Publication of EP3656926B1 publication Critical patent/EP3656926B1/fr
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    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
    • E02D3/12—Consolidating by placing solidifying or pore-filling substances in the soil
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D35/00—Straightening, lifting, or lowering of foundation structures or of constructions erected on foundations

Definitions

  • the invention relates to a method for stabilizing and controlled lifting of buildings and components.
  • the DE 35 21 434 A1 discloses an injection method in which boreholes are drilled in the ground, valve pipes are inserted into the boreholes, the remaining annular space in the borehole is filled with blocking or sealing means, injection liquids are introduced into the valve pipes, which solidify to form a solid body, with the solid bodies breaking through the blocking means and break up, displace and compact the in-situ soil.
  • a method for securing buildings against subsoil movements due to a mobile ground step which forms an offset flank between a stationary subsoil block and a sagging subsoil block.
  • an abutment zone serving as a stabilization layer is formed in the ground at a distance below the structure to be secured by injecting a binding agent suspension.
  • a non-positive volume replacement zone is formed to compensate for any subsidence that has occurred or is to be expected.
  • the volume replacement zone is formed by injecting different binder suspensions.
  • the binder suspension is injected via valve pipes that are arranged one-dimensionally or multidimensionally in the ground and extend like a fan. Depending on the lowering and/or inclination measurements carried out, further adhesion or volume tracking injections are carried out in the volume replacement zone.
  • first layers are injected into the ground, using a suspension with a high permeability with a microcement, and several second layers, which lie between the first layers and which are created using a suspension with a lower permeability.
  • An injection method for securing buildings is known from prospectus 61-02 D of the applicant, which is also marketed by the applicant under the brand name Soilfrac method.
  • flow paths fracs
  • Valve pipes are installed in the ground to be treated.
  • a hardening suspension (jacket mixture) is filled into the annular space between the borehole wall and the valve pipe.
  • An injection hose is inserted into the valve pipe to inject the Soilfrac suspension.
  • a double packer is attached to its lower end, which seals the valve tube above and below the valve and thus enables individual valve stages to be pressed.
  • valve stages are pressed once or several times.
  • injection quantity, the maximum injection pressure and, in the case of repetition, the hardening pause must be observed as specified.
  • Valve pipes can be kept operational for long periods of time.
  • both methods can only be used to a limited extent or no longer at all.
  • a targeted lifting of components is hardly controllable or the effort becomes uneconomical due to undefined stress generation within the hardening areas.
  • the time and technical effort (injection effort) is hardly achievable and targeted remedial measures can therefore not be carried out safely.
  • One object of the present invention is to propose a method for stabilizing or controlled raising of buildings, which enables targeted raising and possibly also subsequent compensation of ground changes, particularly in soft soils.
  • a method for stabilizing structures comprising: carrying out compaction injections underneath the structure, in each case by sinking an injection pipe and injecting an injection agent into the ground, with a series of individual injection bodies lying one on top of the other being produced, which together each form a stabilization element; performing fracturing grouting beneath the structure by means of at least one in-soil fracturing grouting tube which is buried to a depth of at least one quarter of the depth of the longest stabilizing element; characterized in that the break-up injections - viewed in horizontal section - are carried out in soil areas between two or more stabilizing elements; and wherein the break-up injections are carried out by injecting a suspension at different depths, such that the break-up injection bodies produced by means of break-up injections have an overlap of at least a quarter of the longest stabilization element with the stabilization elements in the depth direction.
  • An advantage of the method described is that the stabilization elements produced by means of compaction injections already result in a stabilization structure in the ground if break-up injections are then carried out by means of suspension in overlapping depth areas.
  • compaction injections on the one hand and break-up injections on the other hand work together in a favorable manner.
  • the compaction injections that are introduced first which in this respect can also be referred to as primary injections, cause large-volume bracing and pre-stabilization of the previously relaxed or only insufficiently stable soil.
  • the subsequent break-up injections which in this respect can also be referred to as secondary injections, use the one already established previously Prestressing the soil for further uplift injections.
  • the at least partial overlap in the depth direction or vertical direction between the break-up injections and the stabilization elements previously introduced into the soil by means of compaction injections prevents uncontrolled lateral migration of the suspension, since the stabilization elements form a barrier when the suspension is introduced.
  • the break-up injection bodies produced with it and the previously produced stabilization elements act functionally in parallel, ie the building is supported on both body structures at the same time.
  • the steps described, that the fracturing injections - viewed in horizontal section - are carried out in soil areas between two or more stabilization elements and that the fracturing injections are made to a depth of at least one quarter of the longest stabilization element, only for a partial number, in particular a majority of the break-up injections, optionally also for all break-up injections.
  • the grout used for the compaction injections has a greater stiffness, pastiness and/or viscosity when injected than the suspension for the fracturing injections.
  • compact stabilization elements are created by means of the compaction injections, while lamellar structures are produced in the soil with the break-up injections.
  • the fracturing injections are carried out by means of a plurality of fracturing injection tubes which are placed and left in the ground. These tubes remaining in the ground can also be referred to as sleeve tubes or valve tubes.
  • several injection passes over the pipe system can be adapted to the local situation and repeated as part of the break-up injections.
  • the necessary elevations can be finely controlled after a short time using individual stages of the break-up injection pipes or sleeve pipes immediately during injection.
  • the break-up injections can also be repeated afterwards, for example after several years to generate further increases.
  • the positive effect is particularly evident in cohesive or very soft or loose soils where there is a risk of uncontrolled suspension migration.
  • the method can also be used in a targeted manner for small or unstable foundations.
  • compaction injection is understood as an injection method with displacement of the subsoil, with the purpose of pressing an injection medium with high internal friction into the ground in order to compact the ground without breaking it up.
  • the injection medium which is in particular pasty and injected under high pressure, displaces the in-situ soil and compacts it in the process.
  • the internal friction of the grout ensures that a compact grout is created in the ground.
  • a mortar or another pasty thickening agent can be used, for example, as the injection agent for the compression injections.
  • the injection agent used has a relatively high rigidity or high viscosity, which is also referred to as pasty.
  • the rigidity of the grout is preferably equal to or greater than that of fresh concrete in the plastic consistency range, ie plastic, rigid or very rigid.
  • the associated slump classes for the consistency range of fresh concrete according to DIN 1045 are F2 or less (F1), the associated compaction classes are C2 or less (C1, C0).
  • an grout with a water solids ratio of less than 0.6 is used.
  • the water-solids value designates the mixing ratio of water to solids, the solids being in particular mortar or another thick substance, as mentioned above.
  • a break-up injection method is understood to mean an injection method in which a suspension with a relatively low viscosity is injected into the soil.
  • This method is also marketed by the applicant under the name Soilfrac method.
  • the ground is broken open and it arise skeletal branches or lamellar structures.
  • the increase in volume causes a corresponding consolidation in the soil, which compacts the soil structure and reduces the pore space.
  • the suspension used for the break-up injections has a water binding average value (mixing ratio of water to binding agent) of preferably greater than 0.8.
  • cement, rock flour, dam and/or bentonite can be used as a binder.
  • setting accelerators such as water glass or other silicates can be added to the suspension.
  • the compaction injections can be carried out in several rows and/or levels.
  • the rows or planes can run parallel and/or at an angle to one another.
  • the rows and/or levels preferably run at least mostly below the structure to be supported.
  • at least some of the compression injections are carried out in such a way that the stabilizing elements produced therewith enclose an angle of 0° to 80°, in particular 0° to 60°, preferably 0° to 45°, relative to a vertical axis.
  • the compression injections are carried out along an edge area of the structure or a foundation of the structure, so that the stabilization elements produced by means of compression injections form a limiting structure in the ground below the edge area of the structure. This ensures a particularly good pre-stabilization or structure against undesired migration of the suspension during the subsequent soil frac injections.
  • the break-up injection tubes - viewed in vertical section - can be inserted into the ground in spaces between two or more adjacent stabilization bodies.
  • the break-up injection pipes that these can be introduced into the ground in several rows or levels, which can be arranged parallel or at an angle to one another.
  • At least one can Partial number of break-up injection tubes are introduced into the ground in such a way that they enclose an angle of 0° to 80°, in particular 0° to 60°, preferably 0° to 45°, with a vertical axis.
  • a measuring system is installed on at least one part of the structure to check the inclination or height.
  • the measuring system can be permanently integrated into the structure or temporarily attached to it.
  • a measuring system can also be provided on the base plate for height monitoring.
  • One or more measuring systems are conceivable.
  • the at least one measuring system is designed to record at least one physical measured variable representing the inclination and/or height of the structure.
  • the height and/or inclination of the building can be monitored by means of this measured variable(s) while the break-up injections are being carried out, so that an exact elevation or alignment is made possible.
  • the alignment can preferably be automated or, if high accuracy is maintained, can be carried out manually in individual cases.
  • core drillings can be made in the foundation, through which grouting pipes for producing the compression injections and/or the break-up injection pipes for making the break-up injections are passed.
  • the secondary injections and further post-injections can be carried out using the break-up injection pipes.
  • Core drilling is optional.
  • the bores can also be guided past the side of the foundation.
  • Figure 1A shows a building 2 with foundation 4, base plate 3, side wall 5 and roof 6 in vertical section.
  • the foundation 4 is designed as a single foundation and is arranged in the ground, with the use of strip foundations also being possible.
  • the soil layers 8, 9 lying below the top edge 7 of the terrain have different properties.
  • the texture of the top soil layer 8 is soft, while the underlying soil layer 9 represents a stable soil.
  • FIG. 1A shows the building after installing a measuring system 10 for checking the inclination or height.
  • the measuring system 10 can, for example, be attached to the wall 5 of the building 2 and, if necessary, a measuring system 10′ can also be attached to the base plate 3 and is only shown schematically in the present case. It is designed to record at least one physical measurement variable representing the inclination and/or height of the building 2 .
  • the measuring system can have at least one height sensor and/or at least one inclination sensor, with a hose scale and/or a tilt meter also being used can come.
  • the height or inclination of the structure 2 can be monitored by means of the recorded measured variables while the method according to the invention is being carried out, so that an exact elevation or alignment is made possible.
  • Core bores 11 that have been drilled through the foundation 4 can also be seen.
  • the core bores 11, which can optionally be produced depending on the structural space conditions of the structure to be stabilized, are used to place empty pipes for injections to be carried out later, namely compression and/or break-up injections, which will be described in more detail below.
  • compaction injections are carried out below the structure 2 or below the foundation 4 in order to produce a plurality of stabilization elements 12, 13.
  • the compression injections are each produced by sinking an injection pipe (not shown) and injecting an in particular pasty or stiff injection medium into the ground 8 .
  • the pasty injection agent introduced under high pressure displaces the existing soil 8, 9 and compacts it without breaking it up.
  • the internal friction of the grout creates a compact grout in the ground.
  • the injections are carried out in such a way that a row of individual, superimposed injection bodies 14, 14', 14", etc. is produced, which together form a stabilizing element 12a, 12b, 12c, 13a, 13b.
  • the stabilizing elements can act from the foundation Support vertical forces downwards with a higher load-bearing capacity in the lower-lying floor areas 9. They are designed in particular in the form of columns and in this respect can also be referred to as column elements.
  • the injection agent has a relatively high rigidity or high viscosity in the processing state, so that compact injection bodies 14, 14 ', 14 "etc. are produced. It goes without saying that other pasty thick materials can also be used as injection agent.
  • the stiffness of the injection agent can in particular equally stiff or be stiffer than fresh concrete of consistency classes C2 (compaction class) and/or F2 (slump class) according to DIN 1045, i.e. plastic to stiff.
  • FIG. 2A shows, which shows a plan view of the compaction arrangement, several rows of stabilizing elements 12, 13 are produced along the foundation 4.
  • the arrangement and number of stabilizing elements can be selected individually according to the technical requirements with regard to the soil conditions and the building in order to achieve the desired compaction result.
  • the compression injections can be carried out in a number of rows and/or levels, with the rows or levels being able to run parallel and/or at an angle to one another.
  • the stabilizing elements 12, 13 are produced at least for the most part below the structure 2 to be supported.
  • the stabilizing elements 12, 13 can be introduced into the base 8, 9 in a fan-like manner and enclose an angle of, for example, between 0° and 80° or less relative to a vertical axis.
  • stabilizing elements 12, 13 are arranged in four planes Ea, Eb, Ec, Ed. Stabilizing elements lying in one plane can be introduced into the ground like a fan.
  • a first stabilizing element 12a is introduced into the floor 8, 9 at an angle of 90° to the horizontal in a floor area lying outside of the side wall 5, as is a second column element 13a , which is introduced into the floor 8 below the floor plate 3 at an angle of approximately 70° to the horizontal.
  • the first stabilizing element 12a and the second stabilizing element 13a both extend into the lower floor area 9, the respective depths being denoted by T12a and T13a.
  • the stabilizing elements 12a, 13a and each further stabilizing element designed analogously thereto can support forces acting from the foundation 4 or from the building 2 in the lower-lying ground region 9.
  • a corresponding arrangement of stabilizing elements 12d, 13d is provided in a plane Ed lying on the other side of the foundation 4. So form the stabilizing elements 12a, 13a of the first Level Ea and the stabilization elements 12d, 13c of the second level Ed stabilizations in the foundation 4 laterally adjacent soil areas.
  • first column elements 12b is introduced into the floor 8, 9 at an angle of approximately 85° to the horizontal in an outer edge region below the foundation 4, as well as a second column element 13b is introduced into the floor 8, 9 at an angle of approximately 70° to the horizontal below an inner edge region of the foundation 4 or below the base plate 3.
  • the first stabilizing element 12b of level Eb has a similar depth to the first stabilizing element 12a of the first level Ea
  • the second stabilizing element 12b of level Eb has a similar depth to the second stabilizing element 13a of the first level Ea.
  • Plane Ec is immediately adjacent to plane Eb. Only one stabilizing element 12c is provided here, which is introduced into the floor 8 at an angle of approximately 45° to the horizontal below an inner edge region of the foundation 4 or below the base plate 3 .
  • Figure 1C shows the state after the introduction of the stabilization elements 12, 13 by means of compression injections.
  • break-up injections are carried out underneath the structure 2 by means of break-up injection pipes 15, 16 introduced into the ground 8.
  • the break-up injection pipes 15, 16, which can be designed in the form of sleeve pipes, can be introduced into the ground 8 before, with a time overlap and/or after the stabilization elements 12, 13 have been produced. It is provided that at least some of the sleeve tubes 15, 16, preferably the majority or even all of the sleeve tubes, down to a depth T15, T16 of at least a quarter, preferably at least a third, in particular at least half of the depth T12 of the longest stabilization element is introduced into the floor 8.
  • FIG. 1C shows the state after the insertion of the cuff tubes 15, 16 in the ground 8.
  • the cuff tubes 15, 16 can be made of steel, plastic or composite material. They each have several openings along their length for injecting the suspension and are also referred to as valve tubes.
  • the break-up injections are made by injecting a suspension at different depths along the respective sleeve tube 15,16.
  • the in-situ soil 8 is broken up and skeletal branches 17, 17', 17" etc. or lamellar structures are formed.
  • the increase in volume causes a corresponding consolidation in the soil, which compacts the soil structure and reduces the pore space.
  • the suspension used for the break-up injections has a lower viscosity than the injection agent used to produce the stabilizing elements 12, 13.
  • the suspension preferably has a water binding agent value, i.e. the mixing ratio of water to binding agent, of preferably greater than 0.8.
  • Cement can be used as a binding agent, for example, with optional if required, setting accelerators such as water glass or other silicates can be added.
  • the break-up injections are carried out in soil areas between the stabilizing elements 12, 13 both in the horizontal section and in the vertical section.
  • the sleeve tubes 15, 16 can be introduced into the ground in several rows or levels, which can be arranged parallel or at an angle to one another. At least some of the sleeve tubes, preferably the majority or all of the sleeve tubes 15, 16, can be introduced into the ground in such a way that they enclose an angle of 0° to 80° or less with a vertical axis.
  • the two injection methods described, or the compression structures produced with them work together to achieve good stabilization and/or controlled lifting of the structure.
  • the stabilization elements 12, 13 introduced first into the base 8, 9 cause a large-volume bracing and pre-stabilization of the base.
  • the subsequently introduced break-up injections use the prestressing of the soil 8, 9 that has already been built up, whereby by the vertical overlapping of the break-up injections produced and the previously produced stabilizing elements 12, 13 prevent uncontrolled migration of the suspension, since the stabilizing elements 12, 13 form a barrier when the suspension is introduced.
  • the break-up injection bodies 18 produced with it and the previously produced stabilizing elements 12, 13 act functionally in parallel, ie the building 2 is supported on both body structures at the same time.
  • the break-up injections are pressed into the bottom 8 in four planes Fa, Fb, Fc, Fd, said planes Fa, Fb, Fc, Fd being arranged between the two outer planes Ea, Ed of the compression injections.
  • the first plane Fa which lies between the outer stabilization plane Ea and the middle stabilization plane Eb when viewed in horizontal section
  • the collar tube 16a is inserted into the floor 8 at an angle of approximately 55° to the horizontal in a floor area below the foundation 4 .
  • Another sleeve tube 18b is introduced into the floor 8 in a second plane Fb at an angle of approximately 85° to the horizontal below the foundation 4 .
  • the first break-up injection body 18a is thus created between the stabilizing elements 12c and 13b, and the second break-up injection body 18b between the stabilizing elements 13b and 12b.
  • Further break-up grouts 18c, 18d are injected into soilfrac planes Fc, Fd which are made analogous to break-up grouts 18a, 18b in terms of orientation and configuration between the central stabilization plane Eb and the second outer stabilization plane Ed.
  • the compression arrangement is shown after injecting the suspension and producing the break-up injection bodies 18a, 18b, which are shown here with bold lines.
  • the inventive combination of the compaction injection method with the break-up injection method proposes a safe and precisely controllable compensation method with which targeted elevations are possible immediately or at a later point in time as required, especially in soft soils.

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  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Paleontology (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Agronomy & Crop Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Soil Sciences (AREA)
  • Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)

Claims (15)

  1. Procédé de stabilisation et d'élévation de bâtiments, comprenant :
    l'exécution d'injections de compactage en dessous du bâtiment (2) respectivement par enfonçage d'un tube d'injection et enfonçage par compression d'un agent d'injection dans le sol (8, 9), sachant qu'une série de corps d'injection (14, 14', 14") individuels, superposés est réalisée, qui forment respectivement en commun un élément de stabilisation (12, 13),
    l'exécution d'injection de fracturation en dessous du bâtiment (2) au moyen d'au moins un tube d'injection de fracturation (15, 16) introduit dans le sol (8), qui est introduit dans le sol jusqu'à une profondeur (T15, T16) d'au moins un quart de la profondeur (T12a) de l'élément de stabilisation (12, 13) le plus long,
    caractérisé en ce que
    les injections de fracturation , considérées en coupe horizontale, sont exécutées dans les zones du sol entre deux éléments de stabilisation (12, 13) ou plus et,
    sachant que les injections de fracturation sont pratiquées par enfonçage par compression d'une suspension à des profondeurs différentes de telle manière que les corps d'injection de fracturation (17, 18) réalisés au moyen d'injections de fracturation avec les éléments de stabilisation (12, 13) en direction de profondeur ont une couverture d'au moins un quart de l'élément de stabilisation (12, 13) le plus long.
  2. Procédé selon la revendication 1,
    caractérisé en ce que
    pour les injections de compactage, on utilise un agent d'injection qui comporte lors de l'introduction par compression une rigidité et/ou pastosité supérieure à la suspension.
  3. Procédé selon la revendication 1 ou 2,
    caractérisé en ce que
    les injections de compactage sont exécutées en plusieurs séries et/ou niveaux (Ea, Eb, Ec, Ed), qui peuvent être disposés de façon parallèle ou angulaire les uns par rapport aux autres.
  4. Procédé selon l'une quelconque des revendications 1 à 3,
    caractérisé en ce que
    les injections de compactage le long d'une zone de bordure d'une fondation (4) du bâtiment (2) sont exécutées de telle manière que les éléments de stabilisation (12, 13) réalisés au moyen des injections de compactage forment une structure limitée dans le sol en dessous de la zone de bordure de la fondation (4).
  5. Procédé selon l'une quelconque des revendications 1 à 4,
    caractérisé en ce qu'
    au moins un nombre partiel d'injections de compactage est exécuté de telle manière que les éléments de stabilisation (12, 13) réalisés de ce fait forment un angle de 0° à 80°, en particulier de 0° à 60°, en particulier de 0° à 45°, par rapport à un axe vertical (A) .
  6. Procédé selon l'une quelconque des revendications 1 à 5,
    caractérisé en ce que
    vue en coupe verticale, un tube d'injection de fracturation (15, 16) est respectivement introduit dans le sol (8, 9) entre deux éléments de stabilisation (12, 13) voisins.
  7. Procédé selon l'une quelconque des revendications 1 à 6,
    caractérisé en ce que
    les tubes d'injection de fracturation (15, 16) sont introduits dans le sol ((8) à plusieurs niveaux (Fa, Fb, Fc, Fd), qui peuvent être disposés de façon parallèle ou angulaire les uns par rapport aux autres.
  8. Procédé selon l'une quelconque des revendications 1 à 7,
    caractérisé en ce qu'
    au moins un nombre partiel des tubes d'injection de fracturation (15, 16) est introduit dans le sol (8) de telle manière qu'ils forment avec un axe vertical (A) un angle de 0° à 80°, en particulier de 0° à 60°, en particulier de 0° à 45°.
  9. Procédé selon l'une quelconque des revendications 1 à 8,
    caractérisé en ce que
    pour les injections de compactage, on utilise un agent d'injection avec un rapport eau-solide inférieure à 0, 6.
  10. Procédé selon l'une quelconque des revendications 1 à 9,
    caractérisé en ce que
    pour les injections de fracturation , on utilise une suspension avec un rapport eau-liant supérieure à 0,8.
  11. Procédé selon l'une quelconque des revendications 1 à 10,
    caractérisé en ce que
    la suspension contient des accélérateurs de prise comme du silicate de potassium ou autres silicates.
  12. Procédé selon l'une quelconque des revendications 1 à 11,
    caractérisé en ce qu'
    un système de mesure (10, 10') est installé sur au moins une partie du bâtiment (2), sachant que le système de mesure (10, 10') est équipé pour saisir au moins une valeur de mesure physique représentant l'inclinaison et/ou la hauteur du bâtiment (2).
  13. Procédé selon la revendication 12,
    caractérisé en ce que
    pendant l'exécution des injections de fracturation, on surveille la hauteur et/ou l'inclinaison du bâtiment (2) au moyen du système de mesure (10, 10').
  14. Procédé selon l'une quelconque des revendications 1 à 13,
    caractérisé en ce que
    des carottages (11) sont réalisés dans les fondations (4) à travers lesquels des tubes de compression sont passés pour la réalisation d'injections de compactage et/ou des tubes d'injection de fracturation (15, 16) pour la réalisation d'injection de fracturation .
  15. Procédé selon l'une quelconque des revendications 1 à 14,
    caractérisé en ce que
    plusieurs tubes d'injection de fracturation (15, 16) sont utilisés, qui restent dans le sol (8) après le passage des injections de fracturation, sachant que des postcompressions multiples sont exécutées au moyen des tubes d'injection de fracturation (15, 16), en particulier également à des périodes ultérieurs.
EP18207351.0A 2018-11-20 2018-11-20 Procédé de stabilisation et d'élévation des bâtiments Active EP3656926B1 (fr)

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EP3656926A1 EP3656926A1 (fr) 2020-05-27
EP3656926C0 EP3656926C0 (fr) 2023-06-07
EP3656926B1 true EP3656926B1 (fr) 2023-06-07

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Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51103608A (ja) * 1975-03-08 1976-09-13 Seiko Kogyo Kk Kochikubutsunojoshohoho
DE3521434A1 (de) * 1985-06-14 1986-12-18 Gkn Keller Gmbh, 6050 Offenbach Injektionsverfahren und -vorrichtung zur bodenverbesserung
DE4137359C2 (de) 1991-11-13 1995-12-21 Keller Grundbau Gmbh Verfahren zur Sicherung von Bauwerken gegen Baugrundbewegungen aufgrund einer mobilen Erdstufe
RU2603783C1 (ru) 2015-08-27 2016-11-27 Игорь Яковлевич Харченко Способ выравнивания зданий и сооружений

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