EP1323868B1 - Méthode pour mettre en place un ruban de drainage - Google Patents

Méthode pour mettre en place un ruban de drainage Download PDF

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Publication number
EP1323868B1
EP1323868B1 EP02080342A EP02080342A EP1323868B1 EP 1323868 B1 EP1323868 B1 EP 1323868B1 EP 02080342 A EP02080342 A EP 02080342A EP 02080342 A EP02080342 A EP 02080342A EP 1323868 B1 EP1323868 B1 EP 1323868B1
Authority
EP
European Patent Office
Prior art keywords
lance
pull rod
ground
passage
elongate element
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
EP02080342A
Other languages
German (de)
English (en)
Other versions
EP1323868A1 (fr
Inventor
Pieter Van Der Meer
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.)
Van der Meer Pieter
Original Assignee
Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP1323868A1 publication Critical patent/EP1323868A1/fr
Application granted granted Critical
Publication of EP1323868B1 publication Critical patent/EP1323868B1/fr
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
    • E02D3/02—Improving by compacting
    • E02D3/10—Improving by compacting by watering, draining, de-aerating or blasting, e.g. by installing sand or wick drains
    • E02D3/103—Improving by compacting by watering, draining, de-aerating or blasting, e.g. by installing sand or wick drains by installing wick drains or sand bags
    • 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
    • E02D3/02—Improving by compacting
    • E02D3/10—Improving by compacting by watering, draining, de-aerating or blasting, e.g. by installing sand or wick drains

Definitions

  • the present invention relates to a device for placing at least one elongate element, such as a drainage wick, in a ground, as defined in the preamble of the accompanying main claim.
  • Such a device is known from for instance JP-59.102010 .
  • the engaging means fulfil a co-displacing function for carrying along the drainage wick.
  • the sticking means ensure that a wick becomes fixed in the ground in or close to the deepest point of the inserting lance.
  • the sticking means were in the above mentioned prior art embodied as a fixed protrusion on the pull rod.
  • the objective of the present invention is to provide an improved device, to which end the device according to the present invention further exhibits the features and measures as defined in the characterising portion of the accompanying main claim.
  • the spring element holds the drainage wick fast by clamping against the inner wall of the lance, and thus fulfils the function of engaging means.
  • the pull rod is movable in the lance. When the lance approaches the deepest point, first the lance and only later the pull rod are carried upward.
  • the spring element is here wholly or partially released from the space restrictions imposed by the interior of the lance and therefore then fulfils the function of the sticking means, whereby the wick is stuck forcefully and securely into the ground surrounding the pull rod.
  • the lance can comprise a closing part on the lower end during use for the purpose of closing the passage at least during a downward movement of the lance.
  • This closing part can form part of said pull rod, or be a separate component on the lance itself.
  • this closing part prevents the interior of the lance being blocked with earth.
  • this closing part can be a spherical head.
  • Such a spherical head will of course have larger dimensions than the opening on the underside of the lance to enable effective closing thereof during said downward movement.
  • the closing part can be a valve on the lower end of the lance during use.
  • This is a particularly favourable embodiment for loose soil compositions which, when the lance is moved upward, collapse on and around a spherical head arranged for instance on the end of the pull rod, which can prevent the drainage wick being left behind in the ground in the desired manner.
  • the spherical head is well suitable for a firmer ground, wherein the closing part, when it forms part of the pull rod in particular and the unit in general, is not precluded from having a form other than a spherical head. It is for instance possible to envisage a conical head etc.
  • such a valve can be a flap of tough, strong and flexible material, such as rubber with a strengthening reinforcement. It is possible for instance to envisage rubber strengthened with steel wire such as is for instance applied for car tyres.
  • the lance can itself comprise cutting means for the purpose of severing the elongate element after an upward movement of the lance, once it has been brought back above ground.
  • cutting means can simply be designed here as a stationary knife positioned in accordance with the direction of displacement.
  • Fig. 1 shows a device 1 according to the present invention.
  • This comprises a frame in the form of a crane 2 which can travel over the ground 4 in which drainage wicks must be placed.
  • a mast 3 along which an inserting lance 5 can be moved.
  • Mast 3 thus forms a guide for inserting lance 5.
  • a drive motor 6 which forms a drive for inserting lance 5 to move it reciprocally along guide 3.
  • Inserting lance 5 and motor 6 are mutually connected via a tensioned cable 7.
  • the device 1 is ready for use.
  • motor 6 is set into operation the inserting lance 5 is forced into the ground 4.
  • the inserting lance is moved upward again while leaving behind a drainage wick which is unrolled from a spool 8 during the downward movement of inserting lance 5.
  • the inserting lance has been brought back again above the surface of ground 4, the drainage wick left behind in the ground is severed and the crane 2 is driven to a subsequent location where a drainage wick has to be inserted.
  • Fig. 2 shows a cut-away schematic view of an inserting lance 5 in a first embodiment according to the present invention.
  • Inserting lance 5 is hollow and has a passage 10.
  • Extending in passage 10 is a pull rod 11 having on the end thereof a spherical head 12 closing the passage 10.
  • a leaf spring 13 which forms the engaging means in the sense of the present invention.
  • a drainage wick 9 also extends through passage 10. Drainage wick 9 is pressed by leaf spring 13 against the inner wall of lance 5 and thus co-displaced when the inserting lance 5 is forced into the ground.
  • pull rod 11 is temporarily held stationary while a start is already made with pulling the inserting lance 5 back up.
  • the spherical head 12 is herein released from the opening of passage 10 on the underside of the inserting lance.
  • the inserting lance 5 is pulled so far up that leaf spring 13 is moved clear of the passage.
  • Leaf spring 13 herein presses the drainage wick 9 into the surrounding ground so as to thus fix and position drainage wick 9.
  • the inserting lance 5 is then moved upward together with pull rod 11. Drainage wick 9 herein slides through the interior of the passage 10 and remains behind while inserting lance 5 is moved upward while therefore leaving drainage wick 9 in the ground.
  • the spherical head 12 is once again pulled against the opening of passage 10.
  • a horizontal displacement of the device shown in fig. 1 subsequently takes place to a new location where a drainage wick 9 must also be placed in the ground.
  • the drainage wick 9 is severed with a knife 14, wherein the spherical head 12 presses drainage wick 9 against the knife.
  • Displacement of device 1 is then preferably in the direction of arrow A in order to realize the most efficient possible action of knife 14.
  • Protrusions 15 can thus be arranged in the interior of inserting lance 5 between which the drainage wick 9 can unwind freely.
  • the leaf spring 13 can then rest on these protrusions 15. This is brought about by carrying the inserting lance, with the pull rod 11 therein and the spherical head 12 on the opening of passage 10, to the deepest point.
  • the inserting lance is then moved upward until leaf spring 13 is moved clear of the interior of passage 10 to stick the drainage wick in the surrounding ground.
  • Pull rod 11 is then moved upward again relative to inserting lance 5 until the leaf spring once again rests on said protrusions 15 in the interior of passage 10.
  • this latter can be held stationary for a moment or the upward movement thereof can be continued.
  • Fig. 3 shows an embodiment as a possible alternative to the embodiment of fig. 2 .
  • This relates particularly to an alternative for the spherical head 12 of fig. 2 .
  • the pull rod has constant dimensions along the whole length thereof, which is advantageous when the inserting lance 16 is used in looser soil which collapses onto the pull rod when inserting lance 16 is moved upward to release the leaf spring 13.
  • the collapse of soil onto the spherical head 12 can result in the drainage wick 9 adhering to the spherical head 12 and/or pull rod 11. This is obviated, to a considerable extent if not entirely, in the configuration of fig.
  • a flap 18 is placed for this purpose over the opening of passage 10 on the underside of inserting lance 16. This flap closes the opening during a downward movement of inserting lance 16.
  • the pull rod 11 pushes the flap 18 aside, where after leaf spring 13 is released in order to stick the drainage wick 9 (not shown in fig. 3 ) in the ground.
  • flap 18 is manufactured from rubber reinforced with steel wire.
  • rubber reinforced with steel wire is comparable to the way in which a car tyre is designed.
  • a steel wire reinforcement is very desirable to be able to withstand the high forces generated when the inserting lance is forced into the ground.
  • a slide block 17 in the interior of inserting lance 16.
  • the pull rod slides over this slide block 17 during a movement of pull rod 11 and inserting lance 16 relative to each other, thus also enhancing the action of the leaf spring in co-displacing the drainage wick and sticking thereof in the surrounding ground. Without such a slide block the pull rod 11 is pressed sideways by leaf spring 13, to the left in the drawing, which could affect effective operation thereof. Slide block 17 effectively prevents this.
  • Fig. 3 further shows that a stop 18 is arranged on pull rod 11 and a stop 19 is arranged on the interior of inserting lance 16.
  • the distance between these stops 18, 19 corresponds to the distance which the inserting lance 16 covers on the way up again after reaching the furthest insertion distance into the ground, before the pull rod begins to co-displace upward again. At this moment the stops 18, 19 come into mutual contact and pull rod 11 is carried upward with the inserting lance.
  • At least one of the stops 18, 19 can preferably be positioned adjustably so that the above mentioned distance is adjustable.
  • the pull rod 11 extends through the whole inserting lance 5, even to a point beyond the upper end during use of inserting lance 5.
  • the upper end of pull rod 11 also protrudes above the upper end of inserting lance 5.
  • pull rod 11 comprises on the top side thereof a slotted hole 21 in which is placed a slide block 22.
  • Slotted hole 21 has a limited length and, because slide block 22 is mounted fixedly on inserting lance 5, the freedom of movement of pull rod 11 relative to inserting lance 5 is bounded thereby.
  • the part 20 of pull rod 11 above slotted hole 21 protrudes above the upper end of inserting lance 5 because slide block 22 is arranged close to the upper end of inserting lance 5.
  • the part 20 of pull rod 11 is therefore available to be engaged in or close to the upper position of inserting lance 5 relative to mast 3.
  • the pull rod 11 By engaging said upper part 20 of pull rod 11 when the inserting lance 5 is back again or moves into or close to the upper position thereof relative to mast 3, the pull rod 11 can be moved upward again relative to the inserting lance to the starting position thereof shown in for instance fig. 2 or fig. 3 , where after the construction can once again be used for a new operation.
  • pull rod 11 can be pulled up on a cable.
  • the advantage of the embodiment of the invention shown in fig. 4 and 5 is that pull rod 11 remains behind in the deepest position under the influence of its own weight when inserting lance 5 begins to move upward again after reaching that deepest point. This is the case because pull rod 11 extends through the whole inserting lance 5, although it is not inconceivable that weighting must be arranged on the inserting lance for this purpose.
  • pull rod 11 When inserting lance 5 is moved upward through a distance defined by the length of slotted hole 21, pull rod 11 is carried along by slide block 22 to the range of engagement of tyres 23. Close to or at the highest point of inserting lance 5 relative to mast 3 the pull rod 11 enters the range of engagement of tyres 23 and is lifted relative to inserting lance 5.
  • Tyres 23 thus form a lifting mechanism for pull rod 11 which only acts on pull rod 11 in or close to the highest position of inserting lance 5 during use. This does not however preclude use being made of a lifting device which is continuously in contact with the pull rod so as to realize the function described above for instance with reference to fig. 2 , wherein in or close to the lowest point of inserting lance 5 the pull rod 11 is also lifted some distance to cause leaf spring 13 to rest on protrusions 15.

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  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Paleontology (AREA)
  • General Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Agronomy & Crop Science (AREA)
  • Civil Engineering (AREA)
  • Soil Sciences (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Laying Of Electric Cables Or Lines Outside (AREA)
  • Mechanically-Actuated Valves (AREA)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)
  • Mechanical Treatment Of Semiconductor (AREA)
  • Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)
  • Bridges Or Land Bridges (AREA)

Claims (10)

  1. Dispositif (1) permettant de placer au moins un élément allongé (9), tel qu'une mèche de drainage dans un sol (4), comprenant :
    - un châssis (2) déplaçable au-dessus du sol et surmonté d'un mât (3) qui est au moins dressé en cours d'utilisation;
    - une lance (5) qui est mobile en mouvement de va-et-vient avec un mécanisme d'entraînement (6) par rapport au mât formant pour cela un guide, et qui comprend dans sa direction longitudinale un passage (10) permettant d'y recevoir l'élément allongé au moins pendant un mouvement descendant de la lance, et pour que l'élément allongé le traverse pendant un mouvement ascendant de la lance ; et
    - un bras oscillant (11) s'étendant avec liberté de mouvement dans le passage, dans la direction longitudinale de la lance ; et
    - un moyen d'engagement et de coinçage situé dans le passage, situé à l'extrémité inférieure de la lance en cours d'utilisation, qui co-déplace un élément allongé (9) à placer sur le sol dans le mouvement descendant de la lance et qui, dans la position de la lance ou à proximité de celle-ci, porte l'élément hors de la lance et la coince dans le sol entourant la lance avant ou après le début du mouvement ascendant de la lance,
    caractérisé en ce que
    le moyen d'engagement et de coinçage comprend un élément (13) tel qu'un ressort disposé sur le bras oscillant à proximité de l'extrémité inférieure de la lance en cours d'utilisation.
  2. Dispositif selon la revendication 1, dans lequel le bras oscillant (11) est plus long que la lance d'insertion (5) et comprend une partie qui en cours d'utilisation fait saillie à tout moment au-dessus de la lance d'insertion, et dans lequel un mécanisme (23) de soulèvement destiné au bras oscillant est disposé sur le mât (3) situé sur son côté supérieur en cours d'utilisation, et agit sur le bras oscillant au moins dans la position la plus élevée de la lance d'insertion ou à proximité de cette position.
  3. Dispositif selon la revendication 1 ou 2, dans lequel la lance (5) comprend une partie de fermeture (12 ; 18) située au niveau de son extrémité inférieure en cours d'utilisation, afin de fermer le passage (10), au moins pendant un mouvement descendant de la lance.
  4. Dispositif selon la revendication 3, dans lequel la partie (12) de fermeture est disposée sur le bras oscillant.
  5. Dispositif selon la revendication 4, dans lequel la partie de fermeture comprend une tête sphérique (12) située sur l'extrémité inférieure du bras oscillant (11) en cours d'utilisation.
  6. Dispositif selon la revendication 3, dans lequel la partie de fermeture comprend une soupape (18) située sur l'extrémité inférieure de la lance en cours d'utilisation.
  7. Dispositif selon la revendication 6, dans lequel la soupape comprend un volet (18) constitué d'un matériau rigide, résistant et souple tel que du caoutchouc avec un renfort de renforcement.
  8. Dispositif selon l'une quelconque des revendications précédentes, dans lequel l'élément allongé (9) est plus long que la lance (5) et peut être coupé, et où la lance comprend des moyens de coupe (14) situés sur l'extrémité inférieure de la lance en cours d'utilisation, avec lesquels l'élément allongé peut être coupé après un mouvement ascendant de la lance.
  9. Dispositif selon au moins les revendications 3 et 8, dans lequel les moyens de coupe (14) sont disposés de manière statique à proximité de l'extrémité inférieure de la lance (5) en cours d'utilisation, et co-agissent avec la partie (12) de fermeture afin de couper l'élément allongé, la partie de fermeture mettant l'élément en contact actif avec le moyen de coupe lorsque s'achève le mouvement ascendant de la lance avec lequel la lance est retirée du sol.
  10. Dispositif selon l'une quelconque des revendications précédentes, dans lequel l'élément (13) formant un ressort est un ressort à lames, qui exerce en cours d'utilisation une force sur l'élément (9) dans une direction latérale par rapport au bras oscillant (11).
EP02080342A 2001-12-20 2002-12-18 Méthode pour mettre en place un ruban de drainage Expired - Lifetime EP1323868B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL1019619 2001-12-20
NL1019619A NL1019619C2 (nl) 2001-12-20 2001-12-20 Inrichting voor het plaatsen van bijvoorbeeld drainagelinten.

Publications (2)

Publication Number Publication Date
EP1323868A1 EP1323868A1 (fr) 2003-07-02
EP1323868B1 true EP1323868B1 (fr) 2008-07-30

Family

ID=19774416

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02080342A Expired - Lifetime EP1323868B1 (fr) 2001-12-20 2002-12-18 Méthode pour mettre en place un ruban de drainage

Country Status (5)

Country Link
EP (1) EP1323868B1 (fr)
AT (1) ATE403041T1 (fr)
DE (1) DE60227908D1 (fr)
DK (1) DK1323868T3 (fr)
NL (1) NL1019619C2 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7736091B2 (en) 2006-09-28 2010-06-15 Freyssinet Method and device for inserting a drainage wick
US7566188B2 (en) * 2006-09-28 2009-07-28 Freyssinet Method and device for inserting a drainage wick
SG169907A1 (en) * 2009-09-16 2011-04-29 Tok Si Entpr Co Ltd Method and apparatus for installing prefabricated vertical drain
CN108086258B (zh) * 2017-12-05 2024-09-24 中国电建集团贵阳勘测设计研究院有限公司 一种单缸垂直式液压启闭机用的拉杆

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58210209A (ja) * 1982-05-31 1983-12-07 Tokyu Constr Co Ltd ドレ−ン材打込用マンドレルの切断検出装置
JPS59102010A (ja) * 1982-12-02 1984-06-12 Nakatomi Kurimoto ペ−パドレ−ン工法
JPH0621946Y2 (ja) * 1986-02-17 1994-06-08 東洋建設株式会社 ボ−ド・ドレ−ン工法用ドレ−ン材保持装置
NL9400401A (nl) 1994-03-15 1995-10-02 Geotechnics Holland Drainagelint inbrengende inrichting.

Also Published As

Publication number Publication date
DK1323868T3 (da) 2008-12-01
EP1323868A1 (fr) 2003-07-02
ATE403041T1 (de) 2008-08-15
DE60227908D1 (de) 2008-09-11
NL1019619C2 (nl) 2002-12-20

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