EP0596792B1 - Verbesserte Bodenbearbeitungsvorrichtung mit rotierenden Strahlen - Google Patents

Verbesserte Bodenbearbeitungsvorrichtung mit rotierenden Strahlen Download PDF

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Publication number
EP0596792B1
EP0596792B1 EP93402687A EP93402687A EP0596792B1 EP 0596792 B1 EP0596792 B1 EP 0596792B1 EP 93402687 A EP93402687 A EP 93402687A EP 93402687 A EP93402687 A EP 93402687A EP 0596792 B1 EP0596792 B1 EP 0596792B1
Authority
EP
European Patent Office
Prior art keywords
tubes
string
train
jet
source
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
EP93402687A
Other languages
English (en)
French (fr)
Other versions
EP0596792A1 (de
Inventor
Jean-Claude Gessay
Pierre Clément
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.)
Bachy Sa
Soletanche Bachy France
Original Assignee
SIF ENTREPRISE
Sondages Injections Forages SIF Enterprise Bachy
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 SIF ENTREPRISE, Sondages Injections Forages SIF Enterprise Bachy filed Critical SIF ENTREPRISE
Publication of EP0596792A1 publication Critical patent/EP0596792A1/de
Application granted granted Critical
Publication of EP0596792B1 publication Critical patent/EP0596792B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • E02D3/126—Consolidating by placing solidifying or pore-filling substances in the soil and mixing by rotating blades

Definitions

  • the invention relates to an improved device for the treatment of floors by rotary jet (s).
  • an exogenous material or grout is introduced into the terrain considered from a borehole in the form of at least one jet suitably oriented at high speed which, on its path, destructs the terrain in place, and, according to the nature of the said ground, either mixes with the constituent elements of the latter and leads, after setting, to the formation of a mortar or concrete of soil (case, for example, gravelly or sandy grounds), or replaces purely and simply the ground and leads, after setting, to the formation of a hardened grout (case, for example, clayey grounds).
  • the jet depending on the flow rate, the driving pressure and the characteristics of the terrain, have a certain radius of action.
  • the jets used can be of various types, that is to say consist of a simple grout jet, or a grout jet surrounded by an annular air jet to increase the radius of action , or a combination of a water jet surrounded by an annular air jet ensuring the destructuring of the ground and a separate grout jet, usually provided at a level lower than that of the water jet.
  • a device comprising a central for producing a cement grout supplying grout to one or more pumps connected, via a rotating joint, to a train of tubes introduced into the borehole where the jet treatment is to be carried out.
  • the tube train can be driven in translation and rotation by means of a hydraulic rotary head enclosing the upper end of the tube train, which is itself mounted on a drilling slide.
  • the pump or pumps deliver the destructuring fluid (grout or water) at pressures of the order of 200 to 700 bars or more.
  • the tube train is formed of connectable unitary tubular sections provided with suitable seals and each section can be formed of a single tube (single jet) or of several coaxial tubes (double or triple jet). Liquids (grout, water) are ejected through one or more nozzles with a diameter of 2 to 4 mm approximately.
  • the tube train sections can have a diameter of approximately 50 to 200 mm.
  • a drilling tool can also be provided, below the nozzles, at the lower end of the tube train to carry out the drilling in which the treatment will be carried out.
  • drilling can be performed beforehand by a separate device.
  • the jet treatment is started by positioning the jet device at the bottom of the borehole, driving the tube train in a rotational and translational movement towards the head of the borehole until a column of land is obtained. treated of the desired height.
  • the upper part of the train of tubes protrudes more and more relative to the surface of the ground. This poses no problem when working under normal site conditions, for example in the open air.
  • Such disassembly is however undesirable, in the case of coaxial tubes defining two or more supply channels, because it creates the risk of grout entering the air or water supply channel, which resumption of treatment damages or clogs the ejection nozzles. Also, during disassembly, it is necessary to stop the supply of fluids and there is the risk that there will then occur an untimely return of ejected grout coming to clog the nozzles.
  • the invention aims precisely to meet these needs.
  • Each flexible hose can feed a single nozzle or multiple nozzles through a distributor.
  • the flexible pipe (s) can be left free or kept in contact with or near the outside surface of the drill string or tubes, for example by fixing them in loops secured to the drill string or tubes or by inserting them into recesses provided on the drill string or tubes.
  • the device of the invention is characterized in that the drive device gives the train of rods or tubes an alternative rotational movement doubled, when desired, with a translational movement.
  • the angle of rotation in one direction, then in the other depends on the number, type, and relative positioning of the ejection nozzles.
  • the rotation angle will be 360 ° (one complete revolution) in one direction, then in the other.
  • the angle of rotation may be 180 ° (half a turn) in one direction, then in the other. The point is that all of the land surrounding the borehole where the device of the invention is placed, is treated during the alternative rotation cycle.
  • the angle of rotation may be limited so as not to voluntarily cover the entire terrain surrounding the borehole.
  • the train of tubes no longer serves as a fluid supply conduit and has only a mechanical function, namely to transmit to the nozzles the alternating and possibly translational movement that it imparts to it the drive device.
  • the train no longer needs to be hollow and the train of hollow tubes can be replaced by a train of solid rods, if desired.
  • a reel can be provided for each of the flexible pipes present to facilitate the descent of the jet device of the invention in the drilling and then its rise, thus avoiding the presence of flexible pipes scattered on the ground which could be dangerous due to the high pressure of the conveyed fluids.
  • the single figure is a schematic view of a device according to the invention.
  • a train 1 of elementary tubes 2 connected to each other, to the lower part of which is fixed a terminal element 3 equipped with two ejection nozzles 4 and 5 and a drilling tool 6.
  • the train 1 is capable of being driven in alternating rotation and / or in translation by a drive device consisting of a hydraulic rotary head 7 enclosing the upper end of the train, itself mounted on a slide 8 substantially parallel to the train of tubes.
  • the tool 6 is of a diameter greater than that of the tube train in order to provide a free annular space between said train and the drilling wall 9 produced by the tool 6 in the ground.
  • the nozzle 4 is connected by a flexible pipe 10 to a source 11 of water under high pressure, while the nozzle 5 is connected by a flexible pipe 12 to a source 13 of grout curable under high pressure.
  • reels 14 and 15, for pipes 10 and 12, respectively, are provided on the surface, for winding or unwinding the flexible pipes in order to adjust their length to the needs and prevent them from dragging on the ground, this which in the event of sudden variations in fluid pressure could cause dangerous "lashes".
  • the train 1 of tubes no longer serving as a fluid conduit (s), there is nothing to prevent it from being shortened, as necessary, during its ascent by removing the upper tube section located above the head 7.

Landscapes

  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Paleontology (AREA)
  • Soil Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Agronomy & Crop Science (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Soil Working Implements (AREA)
  • Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Crushing And Pulverization Processes (AREA)

Claims (2)

  1. Vorrichtung zur Bodenbearbeitung durch Jet-Strahlen, mit
    - einem Strang (1) aus aufeinanderfolgend miteinander verbundenen Stangen oder Rohren (2),
    - einer am oberen Teil des Strangs angebrachten Vorrichtung (7, 8) zum drehenden und, falls gewünscht, translatorischen Antrieb des Stangen- oder Rohrstrangs,
    - wenigstens einer am unteren Teil des Strangs vorgesehenen Strahldüse (4, 5),
    - wenigstens einer Hochdruckfluidquelle (11, 13), und
    - einer die Hochdruckfluidquelle mit der Strahldüse verbindenden Versorgungsleitung,
    dadurch gekennzeichnet, daß
    - die Antriebsvorrichtung des Stangen- oder Rohrstrangs diesem eine abwechselnde Drehbewegung vermittelt, und
    - die die Quelle mit der Düse verbindende Versorgungsleitung ein flexibler Schlauch (10, 12) ist, der außerhalb des Strangs (1) angeordnet ist.
  2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß sie ferner eine Abroll-vorrichtung (14, 15) für jeden der flexiblen Schläuche aufweist.
EP93402687A 1992-11-03 1993-11-02 Verbesserte Bodenbearbeitungsvorrichtung mit rotierenden Strahlen Expired - Lifetime EP0596792B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9213154A FR2697551B1 (fr) 1992-11-03 1992-11-03 Dispositif perfectionné pour le traitement des sols par jet(s) rotatif(s).
FR9213154 1992-11-03

Publications (2)

Publication Number Publication Date
EP0596792A1 EP0596792A1 (de) 1994-05-11
EP0596792B1 true EP0596792B1 (de) 1996-09-04

Family

ID=9435132

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93402687A Expired - Lifetime EP0596792B1 (de) 1992-11-03 1993-11-02 Verbesserte Bodenbearbeitungsvorrichtung mit rotierenden Strahlen

Country Status (12)

Country Link
EP (1) EP0596792B1 (de)
JP (1) JP3215560B2 (de)
AT (1) ATE142295T1 (de)
AU (1) AU668769B2 (de)
DE (1) DE69304486T2 (de)
DK (1) DK0596792T3 (de)
FR (1) FR2697551B1 (de)
GR (1) GR3020980T3 (de)
HK (1) HK7097A (de)
MY (1) MY109443A (de)
SG (1) SG44466A1 (de)
TW (1) TW234727B (de)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2768174B1 (fr) 1997-09-05 1999-12-10 Sol Comp Du Train de tiges de forage
BE1018515A3 (nl) * 2009-03-30 2011-02-01 Dredging Int Werkwijze en inrichting voor het stabiliseren van hoofdzakelijk uit slib en/of aanverwante materialen bestaande grond.
CN115038514A (zh) * 2019-11-26 2022-09-09 聚合物技术全球公司 用于淤泥细土的混合装置
CN113818427B (zh) * 2021-11-08 2022-07-01 中铁隧道集团一处有限公司 利用高压水射流的坚硬砂土层钢管桩助沉装置及方法

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1831209A (en) * 1927-11-02 1931-11-10 Western Foundation Company Method of and apparatus for making cast-in-place piles
US4619556A (en) * 1983-11-14 1986-10-28 Parra Ernest P Method and apparatus for severing a tubular member
GB2158486B (en) * 1984-05-09 1987-09-23 Nit Co Ltd A method and apparatus for forming an underground solidification structure
FR2701973B1 (fr) * 1993-02-22 1995-04-07 Sif Installation à sas pour dispositif de traitement des sols par jet(s) rotatif(s).

Also Published As

Publication number Publication date
ATE142295T1 (de) 1996-09-15
DE69304486T2 (de) 1997-03-13
JP3215560B2 (ja) 2001-10-09
JPH06280249A (ja) 1994-10-04
HK7097A (en) 1997-01-24
SG44466A1 (en) 1997-12-19
GR3020980T3 (en) 1996-12-31
AU668769B2 (en) 1996-05-16
FR2697551B1 (fr) 1994-12-09
AU5038893A (en) 1994-05-19
EP0596792A1 (de) 1994-05-11
DK0596792T3 (da) 1996-10-07
TW234727B (de) 1994-11-21
MY109443A (en) 1997-01-31
FR2697551A1 (fr) 1994-05-06
DE69304486D1 (de) 1996-10-10

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