WO2011058223A1 - Procédé et appareil destinés à injecter une substance dans le sol et/ou sous une structure - Google Patents

Procédé et appareil destinés à injecter une substance dans le sol et/ou sous une structure Download PDF

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Publication number
WO2011058223A1
WO2011058223A1 PCT/FI2010/050894 FI2010050894W WO2011058223A1 WO 2011058223 A1 WO2011058223 A1 WO 2011058223A1 FI 2010050894 W FI2010050894 W FI 2010050894W WO 2011058223 A1 WO2011058223 A1 WO 2011058223A1
Authority
WO
WIPO (PCT)
Prior art keywords
substance
injection bar
reacting substance
injection
reacting
Prior art date
Application number
PCT/FI2010/050894
Other languages
English (en)
Inventor
Sami HÄKKINEN
Tuomas Lievonen
Original Assignee
Uretek Worldwide Oy
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Uretek Worldwide Oy filed Critical Uretek Worldwide Oy
Publication of WO2011058223A1 publication Critical patent/WO2011058223A1/fr

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G23/00—Working measures on existing buildings
    • E04G23/06—Separating, lifting, removing of buildings; Making a new sub-structure
    • 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
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G23/00—Working measures on existing buildings
    • E04G23/06—Separating, lifting, removing of buildings; Making a new sub-structure
    • E04G23/065—Lifting of buildings

Definitions

  • the invention relates to a method for injecting a substance into soil and/or under a structure, the method comprising injecting a reacting substance, i.e. a substance which expands and hardens as a consequence of a chemical reaction, into the soil and/or under the structure along an injection bar.
  • a reacting substance i.e. a substance which expands and hardens as a consequence of a chemical reaction
  • the invention further relates to an apparatus for injecting a substance into soil and/or under a structure, the apparatus comprising means for injecting a reacting substance, i.e. a substance which expands and hardens as a consequence of a chemical reaction, into the soil and/or under the structure along an injection bar.
  • a reacting substance i.e. a substance which expands and hardens as a consequence of a chemical reaction
  • Publication US 6634831 discloses a solution, in which the soil is provided with a hole, into which a pipe is inserted. Through the pipe, a substance which expands as a consequence of a chemical reaction is injected into the soil.
  • Publication US 2009/0155002 discloses a solution for improving soil and/or for lifting structures. According to the publication, the soil or structure is provided with a hole, and an injection bar having a fillable expansion element provided in connection therewith is arranged in the hole. A substance that expands as a consequence of a chemical reaction is injected into the expansion element.
  • An object of the present invention is to provide a novel solution for injecting a substance into soil and/or under a structure.
  • the method of the invention is characterized by removing, after the injection has been finished, the reacting substance from inside the injection bar and then re-injecting the reacting substance by using the same injection bar.
  • the apparatus of the invention is characterized in that the apparatus comprises means for removing the reacting substance from inside the injection bar.
  • a reacting substance is injected into soil and/or under a structure through an injection bar. After the injection, the reacting substance is removed from inside the injection bar. After this, the reacting substance is re-injected by using the same injection bar.
  • the injection bar may be left substantially in its place, which allows re-injection substantially into the same point as the previous injection.
  • An idea of an embodiment is that the injected reacting sub- stance is removed from inside the injection bar by filling the injection bar with a non-reacting substance after the injection.
  • a non-reacting substance such a solution is reasonably simple and reliable. If desired, this substance may also be used for cooling the walls of the injection bar in between the injections of the reacting substance.
  • Figure 1 schematically shows injection of a substance into the soil and/or under a structure
  • Figure 2 schematically shows how an injection bar is emptied of in- jected reacting substance
  • Figure 3 schematically shows re-injection by using the same injection bar that was already used for injecting the reacting substance earlier.
  • Figure 1 shows an injection apparatus 1 for injecting a reacting substance 3 into soil 4 along an injection bar 2.
  • the reacting substance 3 is a substance that expands as a consequence of a chemical reaction and con- denses, fills or replaces the surrounding soil or lifts and balances structures.
  • the reacting substance 3 also hardens after the injection.
  • the term 'reacting substance' refers to a substance that expands and hardens as a consequence of a chemical reaction.
  • the outer diameter of the injection bar 2 may vary between 3 and 200 mm, for example.
  • the length of the injection bar may vary between 0.5 and 25 m, for example.
  • the injection bar 2 may be made of metal, such as steel.
  • the injection bar 2 may also be made of some other material, such as plastic, e.g. polyethylene PE.
  • the injection bar 2 need not necessarily be rigid.
  • the injection bar 2 may thus be a plastic hose or pipe, for example. Fur- thermore, if the injection bar 2 is a hose, its wall may be provided with textile reinforcement fabrics or metal or other similar reinforcements.
  • reference numeral 5 designates means for feeding the reacting substance 3 into the injection bar 2.
  • a valve 6 is opened and a valve 8 closed.
  • the means 5 may comprise a mixing chamber 10 and a first channel 1 1 for feeding a first component into the mixing chamber 10 and a second channel 12 for feeding a second component into the mixing chamber 10.
  • the reacting substance may be a substance that expands as a consequence of a chemical reaction, such as a polymer, an expansive resin, or an organically incrystallizable, chemically expansive multicomponent substance.
  • the reacting substance may be, for example, a mixture mainly consisting of two components.
  • the first component may mainly contain polyether polyol and/or polyester polyol, for example.
  • the sec- ond component may contain isocyanate, for instance.
  • the volumetric ratios of the first component to the second component may vary between 0.8 to 1 .2 : 0.8 to 1 .8, for example.
  • the reacting substance 3 may further contain catalysts and water and, if desired, also other components, such as silica, rock dust, fibre reinforcements, and other possible additional and/or auxiliary agents.
  • the injectable substance is preferably such that it starts reacting by expanding within 0.5 to 3600 seconds after being injected into the soil 4. In an embodiment, the substance starts reacting within 20 or more than 25 seconds after being injected. In still another embodiment, the substance starts reacting within less than 50 seconds after being injected.
  • the substance expands to a volume that is e.g. 1 .1 to 120 times the original volume.
  • the expansion coefficient of the substance i.e. the volume of the substance at the end of the reaction as compared with the volume of the substance at the beginning of the reaction, may be of the order of 1 .1 to 120, for instance.
  • the substance is arranged to expand to a volume that is 1 .5 to 20 times the original volume.
  • Figure 2 shows a situation where the feeding of the reacting substance 3 into the soil has been finished.
  • the valve 6 is closed.
  • Reference numeral 7 designates a container and means for feeding into the injection bar 2 a substance that keeps the injection bar open.
  • the non-reacting substance 9 pushes the reacting substance 3 away from the injection bar 2.
  • the non-reacting substance is a substance that does not substantially expand, solidify or harden.
  • the amount of non-reacting substance 9 fed into the injection bar 2 exceeds the internal volume of the injection bar 2. For instance, if the internal volume of the injection bar 2 is 1 .0 I, the non-reacting substance is fed in an amount of 1 .5 I, for example. This ensures that the en- tire injection bar 2 down to its very end is emptied of the reacting substance 3. Furthermore, by feeding non-reacting substance 3 into the injection bar 2 in an amount that is larger than the internal volume of the injection bar, it is possible to provide an injection space 13 inside the already injected reacting substance 3 after the bottom end of the injection bar 2, as illustrated in Figure 2.
  • the reacting substance 3 can be injected reliably out of the injection bar 2 and made to spread inside the already reacted substance.
  • the injectable substance is a substance that expands as a consequence of a chemical reaction, it is possible to inject more of a substance inside the injectable substance, and when this substance expands, it breaks the structure of the already reacted substance and condenses in connection with the already reacted substance.
  • the reacting substance must be removed from the injection bar 2 before it hardens and is substantially attached to the walls of the injection bar 2.
  • two-component substances for example, start hardening as soon as the different components are mixed with each other.
  • the non-reacting substance may be easily removed from in- side the injection bar, after which the injection of the reacting substance may be continued. This is illustrated in Figure 3.
  • the valve 8 is closed and the valve 6 open, and the reacting substance 3 is fed along the injection bar 2 from the container by using the means 5.
  • the non-reacting substance may be, for instance, castor oil or some other non-reacting substance suitable for the purpose, such as water. More preferably, however, the non-reacting substance is such that its viscosity is higher than that of water, and so the non-reacting substance pushes the reacting substance 3 efficiently out of the injection bar 2.
  • Further examples of non-reacting substances include polyester polyol and polyether polyol per se.
  • both the first component from the first channel 1 1 and the second component from the second channel 12 are fed into the mixing chamber 10, whereupon they are mixed in the mixing chamber 10 and form the reacting substance 3 together.
  • the non-reacting substance 9, for its part, is fed into the injection bar 2 so that only one component, which alone is a non-reacting substance 9, is fed into the mixing chamber 10.
  • the non-reacting substance 9 may be removed from the in- jection bar 2 before the reacting substance is re-injected by, for example, sucking the injection bar 2 empty.
  • the non-reacting substance 9 may also be left inside the injection bar, in which case the reacting substance 3 pushes the non-reacting substance 9 into the soil at the beginning of the injection.
  • the reacting substance may be such that, upon reacting, it becomes warm and thus heats e.g. the injection bar 2.
  • the two- component substance is typically a substance that generates heat when it reacts.
  • the temperature of the non-reacting substance may be adapted so as to cool down the injection bar 2. Thus, when the injection bar is opened, it is possible to cool down the injection bar 2, if desired.
  • the injection bar 2 may also be emptied in some other way than by filling it with non-reacting substance 9.
  • the injection bar 2 may be emptied by, for instance, blowing the injection bar 2 empty by means of pressurized air, for example.
  • the disclosed solution may also be applied to techniques in which around the injection bar and/or at the end thereof there is arranged an expansion element, inside which the reacting substance 3 is injected by means of the injection bar 2.
  • the injection bar 2 may further be used for injecting the reacting substance 3 under a slab or floor or some other structure, which means that the reacting substance is not necessarily injected into the soil.

Landscapes

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

Abstract

L'invention concerne un procédé et un appareil destinés à injecteur une substance dans le sol et/ou sous une structure, un réactif (3) étant injecté dans le sol et/ou sous une structure au moyen d'une barre d'injection (2). Ce réactif (3) consiste en une substance qui se dilate et durci à la suite d'une réaction chimique. Après injection, le réactif (3) est éliminé de l'intérieur de la barre d'injection (2). Puis, le réactif est réinjecté au moyen de la même barre d'injection (2).
PCT/FI2010/050894 2009-11-11 2010-11-05 Procédé et appareil destinés à injecter une substance dans le sol et/ou sous une structure WO2011058223A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
FI20096176 2009-11-11
FI20096176A FI20096176A (fi) 2009-11-11 2009-11-11 Maaperän parantaminen ja/tai rakenteiden nostaminen
FI20096263 2009-11-30
FI20096263A FI20096263A (fi) 2009-11-11 2009-11-30 Menetelmä ja laitteisto materiaalin injektoimiseksi maaperään ja/tai rakenteen alle

Publications (1)

Publication Number Publication Date
WO2011058223A1 true WO2011058223A1 (fr) 2011-05-19

Family

ID=41395225

Family Applications (2)

Application Number Title Priority Date Filing Date
PCT/FI2010/050894 WO2011058223A1 (fr) 2009-11-11 2010-11-05 Procédé et appareil destinés à injecter une substance dans le sol et/ou sous une structure
PCT/FI2010/050893 WO2011058222A1 (fr) 2009-11-11 2010-11-05 Améliorations du sol et/ou soulèvement de structures

Family Applications After (1)

Application Number Title Priority Date Filing Date
PCT/FI2010/050893 WO2011058222A1 (fr) 2009-11-11 2010-11-05 Améliorations du sol et/ou soulèvement de structures

Country Status (2)

Country Link
FI (2) FI20096176A (fr)
WO (2) WO2011058223A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3214144A (en) * 1962-07-19 1965-10-26 Schering Ag Ag Apparatus and method for the application of multiple component resins
US3878686A (en) * 1972-11-21 1975-04-22 Geol Associates Inc Grouting process
JPH0733655B2 (ja) * 1986-11-22 1995-04-12 株式会社竹中工務店 固化剤注入管内面掃除装置
JP2005282178A (ja) * 2004-03-30 2005-10-13 Tokuyama Corp 注入管の洗浄方法

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3099911A (en) * 1958-10-08 1963-08-06 Lee A Turzillo Means of grouting or concreting
US5079895A (en) * 1990-07-11 1992-01-14 Gamil Sinki Method to remove a depression in a floor and prevent recurrence of this depression thereafter
JPH07238564A (ja) * 1994-03-01 1995-09-12 Sanyu Doshitsu Eng:Kk 沈下した建築物の浮上工法
JP2003213662A (ja) * 2002-01-16 2003-07-30 Ashimori Ind Co Ltd グラウト注入方法および袋体拡径確認方法
ITMI20042149A1 (it) * 2004-11-09 2005-02-09 Uretek Srl Procedimento per la saturazione di cavita' presenti in un ammasso di terreno o in un corpo in genere
FI118901B (fi) * 2006-06-05 2008-04-30 Uretek Worldwide Oy Menetelmä ja sovitelma maaperän parantamiseksi ja/tai rakenteiden nostamiseksi

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3214144A (en) * 1962-07-19 1965-10-26 Schering Ag Ag Apparatus and method for the application of multiple component resins
US3878686A (en) * 1972-11-21 1975-04-22 Geol Associates Inc Grouting process
JPH0733655B2 (ja) * 1986-11-22 1995-04-12 株式会社竹中工務店 固化剤注入管内面掃除装置
JP2005282178A (ja) * 2004-03-30 2005-10-13 Tokuyama Corp 注入管の洗浄方法

Also Published As

Publication number Publication date
WO2011058222A1 (fr) 2011-05-19
FI20096176A0 (fi) 2009-11-11
FI20096263A0 (fi) 2009-11-30
FI20096176A (fi) 2011-05-12
FI20096263A (fi) 2011-05-12

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