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WO1989003459A1 - Procede de reparation de canalisations - Google Patents

Procede de reparation de canalisations Download PDF

Info

Publication number
WO1989003459A1
WO1989003459A1 PCT/AT1988/000078 AT8800078W WO8903459A1 WO 1989003459 A1 WO1989003459 A1 WO 1989003459A1 AT 8800078 W AT8800078 W AT 8800078W WO 8903459 A1 WO8903459 A1 WO 8903459A1
Authority
WO
WIPO (PCT)
Prior art keywords
formwork
cement
suspension
mortar
resulting
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/AT1988/000078
Other languages
German (de)
English (en)
Inventor
Rudolf Hayden
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Allgemeine Baugesellschaft A Porr AG
Original Assignee
Allgemeine Baugesellschaft A Porr AG
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
Priority claimed from AT254687A external-priority patent/AT391917B/de
Priority claimed from AT197188A external-priority patent/AT397834B/de
Application filed by Allgemeine Baugesellschaft A Porr AG filed Critical Allgemeine Baugesellschaft A Porr AG
Publication of WO1989003459A1 publication Critical patent/WO1989003459A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03F—SEWERS; CESSPOOLS
    • E03F3/00—Sewer pipe-line systems
    • E03F3/06—Methods of, or installations for, laying sewer pipes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
    • F16L55/16—Devices for covering leaks in pipes or hoses, e.g. hose-menders
    • F16L55/162—Devices for covering leaks in pipes or hoses, e.g. hose-menders from inside the pipe
    • F16L55/165—Devices for covering leaks in pipes or hoses, e.g. hose-menders from inside the pipe a pipe or flexible liner being inserted in the damaged section
    • F16L55/1657—Devices for covering leaks in pipes or hoses, e.g. hose-menders from inside the pipe a pipe or flexible liner being inserted in the damaged section lengths of rigid pipe being inserted
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
    • F16L55/18—Appliances for use in repairing pipes
    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03F—SEWERS; CESSPOOLS
    • E03F3/00—Sewer pipe-line systems
    • E03F3/06—Methods of, or installations for, laying sewer pipes
    • E03F2003/065—Refurbishing of sewer pipes, e.g. by coating, lining

Definitions

  • the present invention relates to a method for the repair of sewable and walkable channels, the load-bearing capacity of which does not correspond to the usual structural requirements.
  • This aim is achieved according to the invention in a method of the type mentioned above in that a sealed inner formwork is inserted into the damaged channel, then preferably rotatable inserts with nozzles are attached in specially prepared recesses in the formwork wall and are connected to a mixing and pump system or by means of pressure hose. Drain lines are connected to discharge the items to be washed, then the defective old stock including the organic contaminants is removed and / or removed from water or suspension with the aid of cutting jets and the resulting or already existing cavity is filled with suspension and solidified.
  • a dense supporting formwork is also used.
  • Specially mounted, preferably movable, nozzles are used in these, which direct cutting jets of water or suspension onto the adjacent channel wall, which is loosened or dissolved thereby.
  • the nozzles are distributed on the outer surface; the items to be washed are advantageously drawn off via separate openings in the formwork wall.
  • the cutting jet which strikes the existing channel wall with pressures of preferably between 400 and 1200 bar, dissolves it depending on its nature and at the same time rinses out dirt such as filter skin and fine particles.
  • the destruction of the structure enables penetration and mixing with the subsequently pressed-in suspension.
  • the mixing is so extensive and intimate that one can speak of the formation of a mortar.
  • thermoplastic, elastomeric or duromeric organic binders are advantageously used, or hydraulic binders such as Portland cement, Eisenportland and blast furnace cement, cement with increased sulfate resistance, lime, quick-setting cement based on 11 CaO.TAl 2 O 3 .CaF 2 and alumina cement or Bentcnit.
  • appropriate additives can be used to adapt the setting time of the cement to the given conditions.
  • the addition of a flow agent, a liquefier, an air pore agent and / or a stabilizer can lead to further necessary improvements and modifications.
  • An improvement in the penetrability and / or resistance of the mortar and / or the suspension is achieved by adding plastic additives, preferably based on acrylate and / or styrene butadiene.
  • the steel formwork used initially serves as support formwork for the existing, collapse-threatening sewer, especially during the rinsing phase. If suspension is finally injected, the special formwork is effective as internal formwork, i.e. around them the new canal body is built up out of the ground, remnants of the old stock and suspension. Since the formwork adapts to the existing channel profile, cross-sectional reductions are not important.
  • the formwork in the present method is expediently made of steel or equivalent material in assemblable elements, the size of which generally depends on the cross section of the sewer to be renovated.
  • the formwork elements have at least one, preferably circular opening with a diameter of about 100 mm;
  • the opening is either closed flush with the formwork jacket by means of a welded-on, inwardly extending pipe socket or, depending on the conditions encountered (floor, condition of the channel walls), the nozzle insert is installed in the formwork opening described, which is connected to the pressure pump via a pressure hose .
  • suction devices are distributed evenly over the outer surface of the formwork in place of the nozzles in order to be able to remove the flushing material.
  • phase 1 of the method according to the invention is ended. Subsequent pressing in of suspension creates the new channel around the formwork jacket, partly by mixing the suspension with the soil, but partly by non-positive connection of the old stock (phase 2).
  • the workflow according to the present method can be designed as follows, for example:
  • Rinsing phase The nozzle inserts installed in the formwork wall are designed in such a way that the nozzles can rotate as a result of water pressure.
  • the cutting jet of water is directed at the damaged channel wall at pressures of 400 - 1200 bar, loosens loose material, removes the membrane skin and destroys the existing structure.
  • the locally generated overpressure is created through those openings in the formwork degraded to which the derivation connects. If necessary, it may prove necessary to exchange nozzles and discharge inserts in order to achieve a uniform flushing out.
  • Phase 2 comprises pressing in the suspension, preferably a cement suspension, which is mixed with soil material and remaining old stock by the pressure and the rotary movements of the nozzles.
  • the method according to the invention thus makes the modern technology of high-pressure floor mortar usable for the underground repair of canals at risk of collapse. It is assumed that the intended repair of manholes or chambers will proceed without having to use the road surface.
  • the work area is secured during the day by means of appropriately dimensioned formwork; At the same time, this formwork serves to shape the inner surface of the sewer to be renovated.
  • the removal of duct wall parts and enveloping soil with water in the form of a high-tension cutting jet can be carried out from a radially mounted drill pipe through prepared openings in the formwork into the old stock or floor.
  • the length of the drill pipe is expediently adapted to the clear width of the channel
  • the drill pipe itself consists of the drill pipe, at the end of which a nozzle is located, and a drain pipe arranged centrally thereon.
  • the pump and metering system installed outside the renovation line presses water into the drill pipe via pressure hoses, a cutting jet is generated through the nozzle, which exits with pressures between 400 and 1200 bar.
  • the feed and the rotary movement of the boom ensure that the cutting beam dissolves the defective canal wall or the existing soil structure within a radius of approximately 60 to 100 cm.
  • the loose and fine parts are pumped out through the exhaust pipe.
  • the boom can be extended up to about 80 to 100 cm; in the retreat phase, cement suspension is pressed through the nozzle into the soil and mixed with the remaining soil parts, whereby the mortar occurs.
  • the segment-like mortar finally creates an annular consolidation body around the sewer, which is progressively followed in the direction of the sewer axis until the entire renovation route has been covered.
  • the inner formwork of the canal is moved on as work progresses.
  • the extent of the consolidation body must be based on the strength achieved to ensure the load-bearing capacity of the renovated sewer. Due to the relatively low specific concrete quality, the inner surface is expediently either lined with prefabricated parts or after the cement slurry has been removed, e.g. by means of high pressure flushing, with a special shotcrete layer in order to achieve the required abrasion resistance and chemical resistance.
  • the method described will be used in particular if the local conditions require extensive mortaring and / or the old stock is in a different state.
  • the method according to the invention thus opens up the possibility of restoring burglar-endangered road channels without damaging the road surface, without reducing the drainage cross-section, without disturbing residents and without endangering existing installations or neighboring buildings, that is to say overall without impairing the environment in any way.
  • the construction site equipment - cement silo, pump system, construction hut, material warehouse - takes up relatively little space and can be accommodated in vacant lots if necessary.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Public Health (AREA)
  • Water Supply & Treatment (AREA)
  • Sewage (AREA)

Abstract

Selon un procédé de réparation de canalisations de tous diamètres auxquelles on peut avoir accès en marchant ou en rampant, et dont la force portante est défaillante, on place dans la canalisation endommagée un coffrage intérieur imperméable, puis on dissout et/ou on enlève l'ancienne structure, y compris les impuretés organiques, au moyen de jets d'eau ou d'une suspension injectés par des insertions agencées dans la paroi du coffrage et reliées par un tuyau de refoulement à une installation de mixage et de pompage, et à des conduits d'évacuation du matériau dégagé. La cavité ainsi obtenue ou déjà existante est remplie et consolidée avec une suspension. Les parties enlevées de la paroi de la canalisation et du sol environnant sont évacuées par des ouvertures ménagées dans le coffrage, entraînées par un jet coupant sous haute pression émis par des ajutages, de préférence rotatifs, insérés dans la paroi du coffrage, ou par des tiges radialement soutenues.
PCT/AT1988/000078 1987-10-06 1988-10-05 Procede de reparation de canalisations Ceased WO1989003459A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
AT254687A AT391917B (de) 1987-10-06 1987-10-06 Verfahren zur instandsetzung von strassenkanaelen
ATA2546/87 1987-10-06
AT197188A AT397834B (de) 1988-08-04 1988-08-04 Verfahren zur instandsetzung von strassenkanälen
ATA1971/88 1988-08-04

Publications (1)

Publication Number Publication Date
WO1989003459A1 true WO1989003459A1 (fr) 1989-04-20

Family

ID=25597309

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/AT1988/000078 Ceased WO1989003459A1 (fr) 1987-10-06 1988-10-05 Procede de reparation de canalisations

Country Status (3)

Country Link
EP (1) EP0334917A1 (fr)
JP (1) JPH02501492A (fr)
WO (1) WO1989003459A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0110664A2 (fr) * 1982-11-24 1984-06-13 Pirelli Construction Company Limited Procédé pour rénover des égouts
GB2147393A (en) * 1983-09-28 1985-05-09 Ian Roland Yarnell Valve for grouting
GB2167796A (en) * 1984-12-01 1986-06-04 Tunneline Limited Temporary formwork for tunnel or sewer lining
WO1987005365A1 (fr) * 1986-03-03 1987-09-11 Allgemeine Baugesellschaft - A. Porr Aktiengesells Procede de renovation de canalisations menacees d'effondrement, en particulier de canalisations profilees

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0110664A2 (fr) * 1982-11-24 1984-06-13 Pirelli Construction Company Limited Procédé pour rénover des égouts
GB2147393A (en) * 1983-09-28 1985-05-09 Ian Roland Yarnell Valve for grouting
GB2167796A (en) * 1984-12-01 1986-06-04 Tunneline Limited Temporary formwork for tunnel or sewer lining
WO1987005365A1 (fr) * 1986-03-03 1987-09-11 Allgemeine Baugesellschaft - A. Porr Aktiengesells Procede de renovation de canalisations menacees d'effondrement, en particulier de canalisations profilees

Also Published As

Publication number Publication date
EP0334917A1 (fr) 1989-10-04
JPH02501492A (ja) 1990-05-24

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