EP0410304B1 - Dispositif pour l'injection de suspension - Google Patents

Dispositif pour l'injection de suspension Download PDF

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Publication number
EP0410304B1
EP0410304B1 EP90113846A EP90113846A EP0410304B1 EP 0410304 B1 EP0410304 B1 EP 0410304B1 EP 90113846 A EP90113846 A EP 90113846A EP 90113846 A EP90113846 A EP 90113846A EP 0410304 B1 EP0410304 B1 EP 0410304B1
Authority
EP
European Patent Office
Prior art keywords
introducing
borehole
pressure
valve
sleeve
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.)
Expired - Lifetime
Application number
EP90113846A
Other languages
German (de)
English (en)
Other versions
EP0410304A3 (en
EP0410304A2 (fr
Inventor
Manfred Cartus
Werner Cartus
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.)
Keller Grundbau GmbH
Original Assignee
Keller Grundbau GmbH
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 Keller Grundbau GmbH filed Critical Keller Grundbau GmbH
Publication of EP0410304A2 publication Critical patent/EP0410304A2/fr
Publication of EP0410304A3 publication Critical patent/EP0410304A3/de
Application granted granted Critical
Publication of EP0410304B1 publication Critical patent/EP0410304B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
    • E21D9/001—Improving soil or rock, e.g. by freezing; Injections

Definitions

  • the invention relates to a device of the type mentioned in the preamble of the main claim for a method for producing bores and / or for introducing suspension, in particular cement suspension under pressure into a borehole, the borehole being able to be produced in a conventional manner by drilling and possibly suspension is subsequently introduced, or the borehole can be produced using the soil concrete process or a similar process while simultaneously introducing the suspension during the drilling process.
  • EP 0 218 987 A3 discloses a device for producing bores by means of a drill pipe and for introducing an installation part - such as the anchor rod and the anchor tube of a compression anchor - into the borehole, which has a stuffing box in an insertion piece attached to a sheet pile wall seals the borehole to the outside against the drill pipe or the installation part. Further to the borehole, a slide is arranged in the insertion nozzle, which must be closed manually when changing between the drill pipe and the installation part before the drill pipe is pulled out of the stuffing box, since otherwise pressing water could cause the borehole to be flushed out and collapsed. Operating errors are possible.
  • the invention has for its object to provide an improved device for producing a borehole under pressure to the borehole and / or for introducing binder suspension into the borehole under increased pressure.
  • the solution is characterized by a pinch or membrane valve that can be connected to the connecting piece, with a rigid nozzle part with external pressure supply and an internal pressurizable sealing hose made of elastic material, and an insertion funnel on the pinch or membrane valve for the pinch or membrane valve that can be inserted via the insertion funnel Insertion nozzle.
  • Such a method is characterized in that the opening of the borehole is sealed off from a drill or injection rod and the returning material is discharged in a controlled manner in a pressure or quantity-controlled manner from a return line connected to the borehole.
  • material stands for drilling fluid, suspension for soil consolidation and sealing, as well as soil material in all mixing ratios.
  • the controlled draining can also consist of a quantitative control due to the drill or injection rod.
  • the suspension is preferably kept at a controllable pressure during drilling and / or injection in the borehole, which pressure can be set to a desired value.
  • gas or water bags which form at the highest point of the borehole are preferably filled up by suspension under pressure, the water possibly being drawn off beforehand from water bags.
  • the risk of the formation of such gas or water bags is present in particular in the case of bores drilled at an incline upwards, but on the other hand also cannot be ruled out in bores which are inclined downwards and have a slight incline or poorly permeable soil / suspension mixture.
  • suspension cures, it is kept under a controlled set pressure which, if necessary, is adjusted again by injecting after the pressure has dropped.
  • the principle of post-injection is known per se, but with a pre-pressure maintained in the borehole, the tendency for suspension to flow away is particularly great, so that there is a particular need for controlling the pressure and the possibility of post-injection in the present method.
  • Characteristic of the device according to the invention is the permanent connection of the connecting piece and the pinch and diaphragm valve with the borehole on the one hand and the connection of an insertion piece which can be inserted therein sealingly via an insertion funnel with a drilling and injection rod on the other hand. This makes it possible to prepare a plurality of boreholes for carrying out the method and then to carry out the drilling and injecting process with a single drilling and injecting arrangement or to prepare the injecting method for boreholes which have already been drilled.
  • the sealing connection of the connecting piece with the opening of the borehole is preferably made in that a plate closing the bottom region at the borehole is provided with a borehole, whether made of cement or concrete, or steel, with a borehole into which the Connection piece is used and, depending on the material, is concreted in, glued in or welded in.
  • the pinch or membrane valve connected to the connecting piece is preferably designed to be separable therefrom, so that it can be dismantled immediately after the process has been completed, while the connecting piece may, if appropriate remains at the borehole.
  • Pinch or diaphragm valves of the type mentioned are known components as such, in which the elastic hose can be pressurized with high pressure up to several bars after insertion of the connecting piece connected to the drilling and injecting arrangement, so that a secure seal takes place which occurs during the Injecting and curing can maintain the required pressure in the borehole.
  • a closable slide is provided in the connecting piece, which slide must be closed before the pinch and diaphragm valve is dismantled after the drill and injection rods have been pulled out.
  • the open end of the nozzle after dismantling can be provided in a further embodiment for the attachment of a closure cap.
  • an insertion opening can be provided with suitable sealing means for inserting a discharge and injection tube, via which gas or water bags at the rear end, i.e. are to be deducted in particular at the highest point of a column and to be filled up specifically with suspension which would not be possible by direct insertion from the borehole.
  • the tube can first be closed in a known manner with an end plug which is blown free by pressure.
  • the pressure-maintaining valve referred to above can be arranged in a favorable embodiment on the insertion nozzle connected to the drilling and injection device. This has the advantage that the pressure-maintaining unit only has to be provided in a simple design and that floor columns created one after the other are created under the same pressure conditions. Regardless of that, it is too possible to provide the pressure control valve on the connection piece firmly connected to the borehole. Parts, which are preferably carried out in this case on this connection piece, are a connection with a repressing valve and a connection with a pressure measuring point. The pressure at this pressure measuring point can be used for a safety circuit of the suspension feed pump of the drilling and injection arrangement.
  • the pressure in the borehole can be kept constant until it hardens by means of appropriate connections.
  • the post-compression connections can be connected via a ring line and in this way guarantee consistent quality of all floor columns.
  • a return line connected to a compressed air boiler can also be provided as the pressure maintaining arrangement.
  • This compressed air boiler is then in turn connected to a pressure control device and, if appropriate, to a separate pressure generator.
  • Suitable guiding and sealing means for the drill and injection rods are to be provided on the insertion nozzle, since a closed system from the connection nozzle via the pinch and diaphragm valve to the insertion nozzle must be shown during the drilling and injection process.
  • the device according to the invention can also be used for a customary drilling and injection method with free discharge of the excess or return quantity by opening the mechanical or pneumatically adjustable pressure holding valve.
  • FIG. 1 shows a sealing plate 7 which seals the bottom 28 and into which a connecting piece 8 is inserted in a sealing manner, for example is cemented in place.
  • a nozzle attachment 29 with a pressure measurement connection 12 with a valve is attached via a quick-release fastener 10, which leads to a pressure measurement point.
  • a pinch or diaphragm valve 13 with an internal sealing hose 14 and a compressed air supply 15 is flanged to the neck attachment 29.
  • the hose is in a relaxed position.
  • an insertion funnel 16 which serves to facilitate the insertion of an insertion socket 17, which is provided with an edge protector 18 in order to avoid damage to the closure tube.
  • the insertion nozzle 17 is by means of a fastening bracket 25 is attached to the drilling mast 6, which holds a drilling rod 3 in a rod guide 4, at the front end of which a nozzle head 2 and in front of it a drill bit 1 with flushing outlet can be seen.
  • a so-called breaking device 5 with clamping jaws which is used to connect individual boom sections.
  • the drill pipe 3 is inserted sealingly into the insertion funnel, which is closed at the bottom, via a sealing arrangement 20.
  • Connection 21 is provided as a sealing liquid inlet.
  • a further refill or refill connection 19 with a valve is provided on the inlet connection 17, which can be seen as an alternative to the first refill and refill connection 9 on the connection spout 8.
  • a return nozzle 24 is provided on the filler neck, which can be closed via a poppet valve 22, which includes an adjustable pressure control unit 23.
  • FIG. 2a the connecting piece 8 is shown in the same design as in FIG. 1, the attachments being dismantled starting with the connecting piece attachment 29 and the connecting piece 8 being closed off by means of the quick-release fastener 10 with a cover plate 11.
  • FIG. 2b shows a connection piece 8 in the same design as in FIG. 1, with a slide unit 26 being attached to it by means of the quick-release fastener 10, and behind the slide by means of a further quick-release fastener 30 in turn a closure cover 11 can be seen which has an insertion opening 27 for an exhaust pipe.
  • FIGS. 3 and 4 essentially the same parts as in FIG. 1 can be seen, but the insertion nozzle has not yet been inserted into the membrane valve, but this is shown in the closed position by pressure application via the pressure connection 15. Otherwise, the same individual parts are designated with the same numbers as in the previous figures.

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Soil Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Earth Drilling (AREA)
  • Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)

Claims (8)

  1. Dispositif pour la fabrication de trous et pour l'application d'une suspension dans un trou foré, suivant un procédé d'injection à haute pression comme le procédé Soilcrete, comportant une tubulure de raccordement (8) qui peut être insérée de façon étanche dans le trou foré ou dans son rebord, une tubulure d'introduction (17) comportant un agencement de guidage et d'étanchéité (24) pour une tige (3) de forage et/ou d'injection, un poteau de forage (6) qui peut être déplacé axialement et qui comporte un guidage de tige (4) pour la tige de forage (3), et un dispositif de maintien de pression (22, 23) ajustable ou réglable, caractérisé par une soupape (13) à écrasement ou à membrane qui peut être reliée à la tubulure de raccordement (8) et qui comporte un élément de tubulure rigide avec alimentation de pression externe (15) et un tuyau étanche (14) situé à l'intérieur, pouvant être alimenté en pression et constitué en matière élastique, ainsi qu'un entonnoir d'introduction (16), sur la soupape (13) à écrasement ou à membrane, pour la tubulure d'introduction (17) qui peut être introduite par l'intermédiaire de l'entonnoir d'introduction (16) dans la soupape à écrasement ou à membrane.
  2. Dispositif suivant la revendication 1, caractérisé en ce qu'une soupape de maintien de pression (22) est agencée en tant que dispositif de maintien de pression sur la tubulure d'introduction (17).
  3. Dispositif suivant la revendication 1, caractérisé en ce qu'une conduite de retour (24), sur la tubulure d'introduction (17), est reliée à un récipient d'air comprimé.
  4. Dispositif suivant l'une des revendications 1 à 3, caractérisé en ce qu'il est prévu, en particulier sur la tubulure de raccordement (8), un raccordement (9) d'injection ultérieure comportant une soupape.
  5. Dispositif suivant l'une des revendications 1 à 4, caractérisé en ce qu'il est prévu, en particulier sur la tubulure de raccordement (8), un raccordement de mesure de pression (12) comportant une soupape.
  6. Dispositif suivant l'une des revendications 1 à 5, caractérisé en ce qu'un agencement de soupape à tiroir (26) est monté sur la tubulure de raccordement (8).
  7. Dispositif suivant l'une des revendications 1 à 6, caractérisé en ce que la tubulure de raccordement (8) peut être fermée par un couvercle de fermeture (11).
  8. Dispositif suivant la revendication 7, caractérisé en ce que le couvercle de fermeture (11) présente une ouverture d'introduction (27) pour l'introduction d'un tube d'évacuation et/ou d'injection.
EP90113846A 1989-07-28 1990-07-19 Dispositif pour l'injection de suspension Expired - Lifetime EP0410304B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3925097A DE3925097C1 (fr) 1989-07-28 1989-07-28
DE3925097 1989-07-28

Publications (3)

Publication Number Publication Date
EP0410304A2 EP0410304A2 (fr) 1991-01-30
EP0410304A3 EP0410304A3 (en) 1992-04-08
EP0410304B1 true EP0410304B1 (fr) 1995-10-11

Family

ID=6386093

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90113846A Expired - Lifetime EP0410304B1 (fr) 1989-07-28 1990-07-19 Dispositif pour l'injection de suspension

Country Status (4)

Country Link
EP (1) EP0410304B1 (fr)
AT (1) ATE129047T1 (fr)
DD (1) DD295693A5 (fr)
DE (1) DE3925097C1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4345180C2 (de) * 1993-02-24 1999-02-18 I S I S Ingenieur Seminar Fuer Druckluftschlitzgerät zur Herstellung von standfesten Schlitzen im Erdreich und Lockergestein auf der Grundlage des Strömungsförderns
FR2801927B1 (fr) 1999-12-03 2002-05-10 Cie Du Sol Dispositif d'injection d'un coulis
CN109630062A (zh) * 2018-10-31 2019-04-16 中国石油集团川庆钻探工程有限公司 一种精细控压固井作业方法

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2233872A (en) * 1936-07-27 1941-03-04 California Talc Company Means and method for solidifying underground structures
US3665717A (en) * 1971-01-14 1972-05-30 Soil Sampling Service Inc Method and apparatus for installing elongated rods in unstable earth formations
DE3535320A1 (de) * 1985-10-03 1987-04-09 Dyckerhoff & Widmann Ag Verfahren und vorrichtung zum setzen eines stab-, draht- oder rohrfoermigen einbauteils in eine bodenformation mit drueckendem wasser
DE3639891A1 (de) * 1986-11-21 1988-06-01 Bilfinger Berger Bau Verfahren zur herstellung eines rohrinjektionsschirms oberhalb von tunneln sowie vorrichtung zur durchfuehrung des verfahrens

Also Published As

Publication number Publication date
EP0410304A3 (en) 1992-04-08
ATE129047T1 (de) 1995-10-15
DE3925097C1 (fr) 1991-01-31
DD295693A5 (de) 1991-11-07
EP0410304A2 (fr) 1991-01-30

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