EP2963185B1 - Procédé et dispositif pour prélever un échantillon de sol depuis un fond sous-marin - Google Patents

Procédé et dispositif pour prélever un échantillon de sol depuis un fond sous-marin Download PDF

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Publication number
EP2963185B1
EP2963185B1 EP15174730.0A EP15174730A EP2963185B1 EP 2963185 B1 EP2963185 B1 EP 2963185B1 EP 15174730 A EP15174730 A EP 15174730A EP 2963185 B1 EP2963185 B1 EP 2963185B1
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EP
European Patent Office
Prior art keywords
drill casing
soil sample
underwater bottom
soil
sample holder
Prior art date
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Application number
EP15174730.0A
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German (de)
English (en)
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EP2963185A1 (fr
Inventor
Dieter Wim Jan Rabaut
Wouter Everaerts
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Deme Offshore BE NV
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Deme Offshore BE NV
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Publication of EP2963185A1 publication Critical patent/EP2963185A1/fr
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    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D7/00—Methods or apparatus for placing sheet pile bulkheads, piles, mouldpipes, or other moulds
    • E02D7/18—Placing by vibrating
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D1/00—Investigation of foundation soil in situ
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D1/00—Investigation of foundation soil in situ
    • E02D1/02—Investigation of foundation soil in situ before construction work
    • E02D1/04—Sampling of soil
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D13/00—Accessories for placing or removing piles or bulkheads, e.g. noise attenuating chambers
    • E02D13/04—Guide devices; Guide frames

Definitions

  • the invention relates to a device for taking a soil sample from an underwater bottom.
  • the invention likewise relates to a method for taking a soil sample from an underwater bottom while making use of the device.
  • the underwater bottom can here be at water depths of 1000-2000 m and more.
  • Known devices for taking soil samples are able to take samples in relatively soft ground but are not deployable, or deployable to only limited extent, in clay, gravel and rock bottoms. Furthermore, the penetration depth or sampling depth of the known devices is usually limited to 5 to 6 metres. It has further been found difficult to take undisturbed soil samples with the known devices. A taken soil sample is indeed found in many cases to be adversely affected by the sampling itself and the measured properties are not representative of the soil properties. This problem occurs for instance in relatively soft clay and chalk bottoms.
  • WO 03/038197 A1 discloses a device for taking a soil sample from an underwater bottom.
  • the device comprises an elongated body having an internal cavity connecting to an inlet opening provided on an underside of the elongated body.
  • the elongated body is provided in a support frame that also comprises drive means in the form of friction rolls for driving the underside of the elongated body into the underwater bottom.
  • FR 2902198A1 discloses a system for measuring soil properties under water. It uses a point-like measuring tool that is pushed into the underwater soil.
  • US2011/277566A1 discloses an easy-to-open liner for use in connection with soil samplers.
  • the liner is scored along its length which allows to take out a soil sample easily after having removed the liner from the sampler.
  • An object of the present invention is therefore to provide a device and method which at least partially obviate the above stated drawbacks of the prior art.
  • a device for taking a soil sample from an underwater bottom, comprising an elongate hollow drill casing and a soil sample holder received in the drill casing and having an internal cavity connecting to an inlet opening provided on an underside of the drill casing; a support frame configured for placement on the underwater bottom and for positioning the drill casing relative to the underwater bottom; and a drive for driving the underside of the drill casing into the underwater bottom, whereby the internal cavity of the soil sample holder fills with soil material via the inlet opening to obtain a soil sample; wherein a transverse dimension of the internal cavity of the soil sample holder amounts to at least 200 mm, allowing to take an undisturbed soil sub-sample of smaller size from the soil sample; and the drive is configured to produce a driving-in force of at least 500 kN, and the drive comprises a hydraulic vibratory block configured to generate waves having a frequency within the range of 5 to 100 Hz, and/or a sonic drilling device configured
  • a soil sample holder with the claimed dimensions can receive a soil sample, at least a part of which comprises undisturbed soil material. This is particularly a part located a distance from side walls of the soil sample holder.
  • a method for taking a soil sample from an underwater bottom can be performed according to the invention as reflected by claim 10 of placing the support frame with drill casing on an underwater bottom, whereby an underside of the drill casing is positioned relative to the underwater bottom; driving the underside of the drill casing into the underwater bottom by means of the drive, whereby the internal cavity of the soil sample holder fills with soil material via the inlet opening; raising the soil sample holder filled with bottom material; and removing the taken soil sample from the soil sample holder.
  • the invention can be readily applied in dredging of underwater bottoms, in land reclamation, but for instance also in underwater mining of minerals or nodules located on or in an underwater bottom.
  • the invention is likewise particularly suitable for taking soil samples in so-called cap rock, wherein a hard upper layer makes access to the underwater bottom more difficult.
  • the invention also provides additional advantages in the case of underwater bottoms consisting of several alternating hard and soft layers.
  • an undisturbed soil sub-sample of smaller size is taken from the soil sample.
  • Undisturbed is understood to mean the soil material whose properties are substantially not affected or influenced by the sampling itself.
  • 'Substantially' is understood in the context of this application to mean at least 90%, more preferably at least 94% and most preferably at least 98% of the relevant quantity.
  • the drive comprises a hydraulic vibratory block or a sonic drilling device.
  • the drive takes a substantially watertight and pressure-resistant form.
  • the drive produces a driving-in force of at least 600 kN, more preferably of at least 700 kN and most preferably of at least 800 kN.
  • a suitable drive can transmit only axial forces and/or in an embodiment comprises a rotational drive which is configured to rotate the drill casing around a longitudinal axis thereof, if desired in one direction or alternating in two directions of rotation.
  • a rotational drive which is configured to rotate the drill casing around a longitudinal axis thereof, if desired in one direction or alternating in two directions of rotation.
  • the drill casing can be provided on the underside with a cutting body.
  • the drive of the device comprises a vibration drive which is configured to generate vibratory waves propagated at a frequency in a longitudinal direction of the drill casing. Driving of the drill casing provided with a soil sample holder into the underwater bottom is in this way facilitated.
  • the vibration drive is preferably applied in combination with the rotational drive.
  • a drive in the form of a hydraulic vibratory block engaging on an upper side of the drill casing may be provided,wherein the frequency lies between 5 and 100 Hz.
  • a hydraulic vibratory block comprises eccentrics which are driven by hydraulic motors and generate vibrations whereby the drill casing connected to the drive is driven into the soil material.
  • a drive in the form of a sonic drilling device engaging on an upper side of the drill casing may also be provided, wherein the frequency amounts to at least 100 Hz, and preferably lies between 100 and 250 Hz.
  • a sonic drilling device sets the drill casing into vibration with a relatively high frequency. The generated vibrations ensure that a relatively thin soil layer around and in the drill casing is fluidized, whereby the friction between an inner and outer surface of the drill casing and the adjacent soil material is reduced.
  • Driving and raising the drill casing into and out of the underwater bottom are hereby made easier.
  • a sonic drilling device known per se from for instance US 5,027,908 comprises at least two eccentric weights which have been synchronized and which are driven by hydraulic motors. The movement of the weights set the drill casing into vibration at a sonic frequency.
  • the sonic drive preferably also comprises a rotational drive which is configured to rotate the drill casing around a longitudinal axis thereof, if desired in one direction or alternating in two directions of rotation, wherein rotation in one direction is preferred.
  • the drive and/or a drill casing optionally connected to the drive can be arranged in any manner in a support frame placed on the underwater bottom.
  • a suitable embodiment of the device according to the invention comprises hoisting means for suspending the drive and/or the drill casing.
  • the hoisting means such as for instance a crane optionally placed on a vessel, can likewise be applied to place the support frame on an underwater bottom.
  • the drill casing provided with a soil sample holder is supported by a support frame which is configured for placing on the underwater bottom and for positioning the drill casing relative to the underwater bottom.
  • the support frame comprises a framework of mutually connected frame elements which form a base surface and a guide structure for the drill casing lying within the periphery of the base surface.
  • the support frame provided with the drill casing is placed with the base surface on an underwater bottom, wherein the guide structure preferably extends upward from the underwater bottom.
  • the height of the guide structure can be selected within broad limits and depends on, among other factors, the soil properties.
  • the base surface of the support frame can be provided with support feet which, if desired, are height-adjustable.
  • the drill casing comprises mutually connected shell parts which extend in the longitudinal direction of the drill casing and which can be removed from each other.
  • a soil sample holder of relatively large dimensions can be easily arranged in a shell part, after which the soil sample holder can be enclosed in the drill casing by connecting the other shell part, or other shell parts, to said shell part.
  • the soil sample holder comprises an elongate sample holder guide structure, for instance of a plastic such as PVC.
  • a plastic such as PVC.
  • the length of such a sample holder tube can be chosen within broad limits but is preferably slightly shorter than the drill casing, preferably 20% shorter, more preferably 10% shorter and most preferably 5% shorter relative to the drill casing length. This allows the drill casing to be provided on an underside thereof with an end piece, such as a cutting body, and/or with a retaining member for the soil material received in the internal cavity.
  • the device according to the invention is characterized in an embodiment in that an external transverse dimension of the soil sample holder amounts to at least 200 mm, the soil sample holder has a length lying between 2 and 20 m and the soil sample holder has a wall thickness lying between 5 and 25 mm.
  • a further improved embodiment provides a device wherein an internal transverse dimension of the drill casing amounts to at least 370 mm, the drill casing has a length lying between 2 and 20 m and the drill casing has a wall thickness lying between 10 and 30 mm.
  • a method for taking a soil sample from an underwater bottom comprises of providing a device according to the invention; preparing the drill casing by placing the sample holder tube, the cutting body and/or retaining member; placing the drill casing in the support frame whereby an underside of the drill casing can be positioned relative to the underwater bottom; placing the support frame with drill casing on an underwater bottom; driving the underside of the drill casing into the underwater bottom by means of the drive, wherein the drill casing is driven into the underwater bottom via a hydraulic vibratory block engaging on an upper side of the drill casing, and at a frequency lying between 5 and 100 Hz, and/or via a sonic drilling device engaging on an upper side of the drill casing, and at a frequency of at least 100 Hz, whereby the internal cavity of the soil sample holder fills with soil material via the inlet opening to obtain a soil sample; raising the soil sample holder filled with soil material; and removing the taken soil sample from the soil sample holder, wherein the advantages also
  • launching devices comprise for instance a crane placed on a vessel or the underwater bottom, a tiltable frame mounted on the vessel and/or a moon pool with gantry crane provided in the vessel.
  • vibratory waves propagated at a frequency are generated in a longitudinal direction of the drill casing, whereby the drill casing is driven into the underwater bottom, and the drill casing is driven into the underwater bottom via a hydraulic vibratory block engaging on an upper side of the drill casing, and at a frequency lying between 5 and 100 Hz; and/or via a sonic drive engaging on an upper side of the drill casing, and at a frequency of at least 100 Hz, and preferably lying between 100 and 250 Hz.
  • the drive with a drill casing attached thereto if desired is suspended in a practical embodiment from hoisting means and subsequently lowered into the support frame in the desired position relative to the underwater bottom.
  • a soil sample holder is arranged in the drill casing by removing from each other mutually connected shell parts of the drill casing extending in the longitudinal direction of the drill casing, arranging the soil sample holder in a remaining shell part and enclosing the soil sample holder in the drill casing by connecting a removed shell part to the remaining shell part.
  • an underside of the drill casing is provided with a retaining member for the soil material received in the internal cavity.
  • the retaining member is moved from an open to a closed state and in the closed state has a conical form wherein the top of the cone points in the direction of the internal cavity.
  • the retaining member preferably further forms a substantially closed surface in the closed state.
  • the above described device and method according to the invention allow undisturbed soil samples to be taken in a relatively short period of time in relatively soft underwater bottoms, such as for instance a soft clay or limestone bottom, but also in bottoms which are conversely relatively hard, such as for instance a clay, sand or rocky bottom.
  • Device 1 for taking a soil sample from an underwater bottom 3 is shown.
  • Device 1 comprises a steel, elongate, hollow drill casing 2 with an inlet opening 4a which is provided on an underside 2a of the drill casing and along which soil material can be introduced.
  • the external diameter (transverse dimension) of the drill casing shown in figure 1 amounts to 559 mm, while the length amounts to 6 m and the wall thickness to 20 mm.
  • the shown device 1 further comprises a support frame 5 which is configured for placing on underwater bottom 3 and for positioning drill casing 2 in a substantially vertical direction 6 relative to underwater bottom 3.
  • Support frame 5 comprises a framework of frame elements (5a, 5b, 5c, 5d, 5h) which are rigidly connected to each other and of which frame elements 5a form a square base surface of 5 m by 5 m.
  • frame elements 5a form a square base surface of 5 m by 5 m.
  • a guide structure formed by four base elements 5b which form a square bottom surface, and four top elements 5c which form a square top surface. The bottom surface and the top surface are held spaced apart by frame elements 5d running in vertical direction 6.
  • Guide structure (5b, 5c, 5d) is connected rigidly to the base surface by means of inclining frame elements 5h and configured to receive and support a lower part of drill casing 2.
  • the height of guide structure (5b, 5c, 5d) is relatively limited in the shown embodiment but can if desired extend over a greater height.
  • drill casing 2 is provided with a soil sample holder in the form of a likewise elongate, hollow sample holder tube 4 of PVC.
  • An internal cavity of sample holder tube 4 connects to an inlet opening 4a provided on the underside 2a of the drill casing.
  • drill casing 2 is constructed from two shell parts (21, 22) mutually connected by means of hinges 23 disposed in longitudinal direction 20 of drill casing 2.
  • Shell parts (21, 22) extend in longitudinal direction 20 of drill casing 2 and can be removed from each other by rotating a shell part 21 around hinges 23 away from the other shell part 22 ( figure 2B ).
  • the sample holder tube 4 can be easily arranged in shell part 22 ( figure 2C ), after which shell part 21 is moved back in the direction of shell part 22 and secured thereto ( figure 2D ).
  • the soil holder tube 4 is enclosed in drill casing 2.
  • the soil sample tube 4 shown in figure 2 has an external diameter (transverse dimension) of 500 mm, a length of about 10 m and a wall thickness of 15 mm.
  • the drill casing is closed with a seal 24 which is provided with a non-return valve 25.
  • a cutting body 7 Arranged on the underside 2a of the drill casing is a cutting body 7 which is provided with a retaining member 8 for soil material received in the internal cavity of soil sample tube 4.
  • cutting body 7 comprises a cylindrical sleeve 70 with a transverse dimension fitting onto drill casing 2.
  • Sleeve 70 is provided on the underside with a cutting edge 71, whereby drill casing 2 can penetrate more easily into an underwater bottom.
  • Sleeve 70 is provided on an upper side thereof with attaching means 74 which are arranged in a peripheral direction 73 and with which sleeve 70 can be secured to drill casing 2.
  • Sleeve 70 is provided on the inner side with a retaining member 8, an embodiment of which is shown in figure 4 .
  • Retaining member 8 comprises a base ring 80 with which it is attached to an internal peripheral surface of sleeve 70 of cutting body 7.
  • Base ring 80 surrounds an opening 81 which connects to inlet opening 2a of drill casing 2.
  • Retaining member 8 further comprises two shell parts 82 which are connected hingedly (by means of hinge connections 83) to base ring 80 and which, as shown in figure 4B , fit against each other with free edge parts 82a in a closed state so that a substantially closed surface is obtained.
  • shell parts 82 are rotated away from each other, thereby creating an opening between the free edge parts 82a which gives access to inlet opening 2a of drill casing 2.
  • shell parts 82 are automatically pressed apart, whereby soil material can enter soil sample tube 4 of drill casing 2 via opening 81.
  • retaining member 8 is moved into the closed state of figure 4B by inter alia the weight of the taken soil sample, and drill casing 2 can be raised.
  • the device 1 is further provided with a drive which is able to produce a driving-in force of at least 500 kN.
  • the drive comprises a vibration drive 9 with which vibratory waves propagated at a frequency lying between 5 and 100 Hz are generated in the longitudinal direction 20 of drill casing 2.
  • the drive comprises a hydraulic vibratory block which engages on upper side 2b of drill casing 2 and which is provided with oil by a hydraulic unit (not shown) with a maximum power of 890 kW, a maximum pressure of 350 bar and a maximum flow rate of 1200 1/min.
  • the hydraulic oil is supplied under pressure via hydraulic conduits 90 connected to vibratory block 9.
  • Vibratory block 9 comprises a housing 91 for the necessary electronics and a housing 92 for hydraulically driven distance.
  • the upper side 2b of drill casing 2 is held firmly by means of clamping cylinders 94 mounted on a transverse beam 93, whereby vibratory block 9 is mounted on drill casing 2.
  • Vibratory block 9 is configured to generate an eccentric moment of 50-100 kgm and vibrations at a frequency of 1500-2200 vpm.
  • the centrifugal force to be produced typically lies between 1500-3500 kN, and in particular between 2000-3000 kN.
  • the vibratory block 9 with a drill casing 2 mounted thereon can be hoisted in its entirety, for instance from a vessel, on a hoisting cable 31 using hoisting means, such as a crane, suitable for the purpose (not shown).
  • hoisting means such as a crane
  • FIG 5 a possible embodiment of the method according to the invention is shown.
  • the assembly of vibratory block 9 and a drill casing 2 mounted thereon (and provided with soil sample tube 4 and cutting body 8) is first attached to a hoisting cable 31 ( figure 5A ), picked up by the crane (not shown) and lowered with support frame 5, wherein the underside 5a of drill casing 2 is situated inside guide structure (5b, 5c, 5d) of support frame 5 ( figure 5B ).
  • Support frame 5 is then lowered and placed with the base surface on an underwater bottom 3.
  • Second hoisting cables 30 attached to vibratory block 9 are subsequently connected under a certain tension to the corner points of support frame 5 and the whole is lowered onto underwater bottom 3 ( figure 5C ).
  • Drill casing 2 is hereby positioned in a substantially vertical position relative to underwater bottom 3.
  • the underside 2a of drill casing 2 is then driven by means of vibratory block 9 into underwater bottom 3, whereby the internal cavity of soil sample tube 4 fills with soil material via inlet opening (2a, 81).
  • hoisting cables 30 slacken as shown in figure 5D .
  • the assembly of vibratory block 9 and drill casing 2 is raised again and soil sample tube 4 is removed from drill casing 5, after which the taken soil sample can be removed from soil sample tube 4.
  • an undisturbed soil sample of smaller size is preferably kept from the taken soil sample.
  • the method and device according to the invention can also be applied for purposes other than determining soil properties, such as for instance in the mining industry for the purpose of determining the presence of desired materials in the underwater bottom.

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Paleontology (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Soil Sciences (AREA)
  • Sampling And Sample Adjustment (AREA)

Claims (14)

  1. Dispositif (1) destiné à prélever un échantillon de sol provenant d'un fond subaquatique (3), comprenant :
    un tubage de forage creux allongé (2) et un support d'échantillon de sol (4) reçu dans le tubage de forage (2) et comportant une cavité interne reliée à une ouverture d'entrée (4a) formée sur un côté inférieur (2a) du tubage de forage (2) ;
    un châssis de support (5) configuré de manière à assurer la mise en place sur le fond subaquatique (3) et à positionner le tubage de forage (2) par rapport au fond subaquatique (3) ; et
    un dispositif d'entraînement destiné à entraîner le côté inférieur du tubage de forage dans le fond subaquatique de telle sorte que la cavité interne du support d'échantillon de sol puisse se remplir de matériau de sol à travers l'ouverture d'entrée afin d'obtenir un échantillon de sol ;
    caractérisé en ce que :
    une dimension transversale de la cavité interne du support d'échantillon de sol est supérieure ou égale à 200 mm, permettant de prélever un sous-échantillon de sol non mélangé d'une taille inférieure à partir de l'échantillon de sol,
    le dispositif d'entraînement est configuré de manière à produire un effort d'entraînement d'au moins 500 kN ; et
    le dispositif d'entraînement comprend un bloc vibrant hydraulique (9) configuré de manière à produire des ondes présentant une fréquence à l'intérieur de la plage de 5 à 100 hertz, et/ou un dispositif de forage sonique configuré de manière à produire des ondes présentant une fréquence s'élevant à au moins 100 hertz, dans lequel le dispositif d'entraînement est couplé sur un côté supérieur (2b) du tubage de forage (2).
  2. Dispositif selon la revendication 1, dans lequel le dispositif d'entraînement comprend un dispositif d'entraînement en vibration (9) qui est configuré de manière à produire des ondes vibratoires propagées à une certaine fréquence dans une direction longitudinale du tubage de forage (2).
  3. Dispositif selon l'une quelconque des revendications précédentes, dans lequel le dispositif de forage sonique est configuré de manière à produire des ondes présentant une fréquence à l'intérieur de la plage de 100 à 250 hertz.
  4. Dispositif selon l'une quelconque des revendications précédentes, comprenant, en outre, des moyens de levage (30) destinés à suspendre le dispositif d'entraînement et/ou le tubage de forage.
  5. Dispositif selon l'une quelconque des revendications précédentes, dans lequel le châssis de support (5) comprend une structure d'éléments de châssis couplés mutuellement qui forment une surface de base et une structure de guidage pour le tubage de forage (2) agencée à l'intérieur de la périphérie de la surface de base.
  6. Dispositif selon l'une quelconque des revendications précédentes, dans lequel le foret (2) comprend des parties d'enveloppe couplées mutuellement (82) qui s'étendent dans la direction longitudinale du tubage de forage et qui peuvent être séparées l'une de l'autre.
  7. Dispositif selon l'une quelconque des revendications précédentes, dans lequel le support d'échantillon de sol comprend un tube de support d'échantillon allongé (4) d'une longueur inférieure à la longueur du tubage de forage.
  8. Dispositif selon l'une quelconque des revendications précédentes, dans lequel une dimension transversale externe du support d'échantillon de sol (4) est supérieure ou égale à 365 mm, une longueur est comprise entre 2 et 20 m et une épaisseur de paroi est comprise entre 5 et 25 mm, et dans lequel une dimension transversale interne du tubage de forage est supérieure ou égale à 370 mm, une longueur est comprise entre 2 et 20 m et une épaisseur de paroi est comprise entre 10 et 30 mm.
  9. Dispositif selon l'une quelconque des revendications précédentes, dans lequel un côté inférieur du tubage de forage (2) comporte un élément de retenue du matériau de sol reçu dans la cavité interne.
  10. Procédé destiné à prélever un échantillon de sol à partir d'un fond subaquatique , comprenant :
    la fourniture d'un dispositif (1) selon l'une quelconque des revendications précédentes ;
    la réception du tubage de forage (2) sur le châssis de support ;
    la descente du châssis de support (5) avec le tubage de forage (2) en direction du fond subaquatique ;
    la mise en place du châssis de support sur un fond subaquatique, de telle sorte qu'un côté inférieur du tubage de forage est positionné par rapport au fond subaquatique ;
    l'entraînement du côté inférieur du tubage de forage vers le fond subaquatique au moyen du dispositif d'entraînement, dans lequel le tubage de forage est entraîné vers le fond subaquatique par l'intermédiaire d'un bloc vibrant hydraulique (9) se couplant sur un côté supérieur du tubage de forage et à une fréquence comprise entre 5 et 100 hertz, et/ou par l'intermédiaire d'un dispositif de forage sonique se couplant sur un côté supérieur du tubage de forage et à une fréquence supérieure ou égale à 100 hertz, de telle sorte que la cavité interne du support d'échantillon de sol se remplisse de matériau de sol à travers l'ouverture d'entrée afin d'obtenir un échantillon de sol ;
    le levage du support d'échantillon de sol (4) rempli de matériau de sol ;
    l'extraction de l'échantillon de sol prélevé du support d'échantillon de sol ; et
    le prélèvement d'un sous-échantillon de sol d'une taille inférieure à partir de l'échantillon de sol.
  11. Procédé selon la revendication 10, dans lequel des ondes vibratoires sont produites dans une direction longitudinale du tubage de forage (2) au cours de l'entraînement du tubage de forage dans le fond subaquatique.
  12. Procédé selon l'une quelconque des revendications 10 et 11, dans lequel le tubage de forage (2) est entraîné dans le fond subaquatique par l'intermédiaire du dispositif de forage sonique à une fréquence comprise entre 100 et 250 hertz.
  13. Procédé selon l'une quelconque des revendications 10 à 12, dans lequel le dispositif d'entraînement est suspendu par des moyens de levage (30) et le tubage de forage (2) est couplé au dispositif d'entraînement.
  14. Procédé selon l'une quelconque des revendications 10 à 13, dans lequel un support d'échantillon de sol (4) est agencé sur le tubage de forage en séparant l'une de l'autre des parties d'enveloppe (82) couplées mutuellement du tubage de forage s'étendant dans la direction longitudinale du tubage de forage, en agençant le support d'échantillon de sol (4) sur une partie d'enveloppe restante et en couplant une partie d'enveloppe retirée à la partie d'enveloppe restante.
EP15174730.0A 2014-07-03 2015-07-01 Procédé et dispositif pour prélever un échantillon de sol depuis un fond sous-marin Active EP2963185B1 (fr)

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BE2014/0508A BE1021927B1 (nl) 2014-07-03 2014-07-03 Werkwijze en inricting voor het nemen van een bodemmonster uit een onderwaterbodem

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EP2963185A1 EP2963185A1 (fr) 2016-01-06
EP2963185B1 true EP2963185B1 (fr) 2022-09-07

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CN107976331B (zh) * 2017-11-07 2020-10-27 无锡艾科瑞思产品设计与研究有限公司 一种土壤取样装置
CN111879589B (zh) * 2020-08-04 2023-06-27 黑龙江省地球物理地球化学勘查院 一种土壤地球化学自动筛制样品的装置
CN112082806B (zh) * 2020-09-28 2024-03-15 重庆渝久环保产业有限公司 可排水的水下土壤采样系统
CN112747964A (zh) * 2021-02-03 2021-05-04 周海云 一种水利地质勘测用水下土壤取样设备
CN113155513B (zh) * 2021-05-28 2022-11-22 芜湖职业技术学院 水下可控深度土壤采样器
CN114197443B (zh) * 2021-12-29 2023-05-26 青岛地质工程勘察院(青岛地质勘查开发局) 一种软土地基处理装置
CN114778180A (zh) * 2022-05-06 2022-07-22 蒋学科 一种土壤样本采集车

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EP1154076A1 (fr) * 2000-05-10 2001-11-14 Eijkelkamp Agrisearch Equipment B.V. Dispositif de prélèvement d'échantillon de sol
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EP1154076A1 (fr) * 2000-05-10 2001-11-14 Eijkelkamp Agrisearch Equipment B.V. Dispositif de prélèvement d'échantillon de sol
WO2003038197A1 (fr) * 2001-11-02 2003-05-08 Geo Procede et appareil d'entrainement d'une masse allongee dans fond sous une masse d'eau
FR2902198A1 (fr) * 2006-06-13 2007-12-14 Electricite De France Appareil et systeme adaptes pour effectuer des mesures au fond d'un lac
US20110277566A1 (en) * 2010-05-12 2011-11-17 Todd Merrell Easy Open Liners for Soil and Sediment Samplers

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