WO2016067272A1 - Dispositif de découpage de pieux - Google Patents

Dispositif de découpage de pieux Download PDF

Info

Publication number
WO2016067272A1
WO2016067272A1 PCT/IB2015/058460 IB2015058460W WO2016067272A1 WO 2016067272 A1 WO2016067272 A1 WO 2016067272A1 IB 2015058460 W IB2015058460 W IB 2015058460W WO 2016067272 A1 WO2016067272 A1 WO 2016067272A1
Authority
WO
WIPO (PCT)
Prior art keywords
cutting
water jet
elements
filling material
cutting plane
Prior art date
Application number
PCT/IB2015/058460
Other languages
English (en)
Inventor
Martin VAN DROMME
Chris LEHOUCK
Original Assignee
D.E.C.O. Nv
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 D.E.C.O. Nv filed Critical D.E.C.O. Nv
Priority to EP15808784.1A priority Critical patent/EP3212851B1/fr
Publication of WO2016067272A1 publication Critical patent/WO2016067272A1/fr

Links

Classifications

    • 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
    • E02D7/24—Placing by using fluid jets
    • 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
    • E02D7/28—Placing of hollow pipes or mould pipes by means arranged inside the piles or pipes
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D9/00—Removing sheet piles bulkheads, piles, mould-pipes or other moulds or parts thereof
    • E02D9/04—Removing sheet piles bulkheads, piles, mould-pipes or other moulds or parts thereof by cutting-off under water

Definitions

  • the present invention relates to a device and method for removing filling material in underwater support posts.
  • the invention relates to a device and method for removing filling material in underwater support posts, making use of water jet technology and mechanical pressure.
  • WO 2013/019959 describes high power laser systems, tools and methods of using such systems and tools for cutting, sectioning and removing structural objects and materials, particularly in difficult to access environments such as offshore, underwater or hazardous environments such as nuclear or chemical production facilities.
  • WO 2014/080233 relates to offshore structures, such as, for example, structures, that is support piles, for supporting wind turbines.
  • the technology describes an apparatus comprising an acoustic insulation layer between the pile and the surrounding water during the deployment of said pile in the water.
  • US 4,372,707 provides a temporary jack-up rig for oil and gas exploration. The rig is brought to the required offshore location and subsequently, support piles are pushed into the sea floor by means of a hydraulic process. Conversely, the piles can again be detached and the structure can be taken to a new location.
  • US 5,704,732 provides a method for installing and removing deep-water piles, that prevents the need for an underwater hoist.
  • the pile is a hollow tube which is open at the lower end and is provided with a fitting at the upper end.
  • the clearing of the pile can be accomplished by injecting a high-pressure water jet into the pile through the pile head.
  • the high pressure water jet thereby helps to overcome the external hydrostatic pressure.
  • Other techniques make use of water power or mechanical force for breaking materials. However, such techniques do not allow to remove the filling material in such underwater support piles in a quick and efficient manner. Therefore, such structures are cut and removed as such. This does not allow, for example, to partly or completely re-use such underwater structures for other or similar purposes for offshore structures.
  • the present invention seeks to provide a solution to one or more of the aforementioned problems or shortcomings.
  • the invention provides a cutting device and method for removing filling material in offshore structures according to claim 1.
  • the invention provides a method for clearing underwater support piles, wherein said support piles are comprised of a wall comprising a filling material, comprising the steps of: (i) the predominantly transverse cutting of one or more underwater support piles, thereby obtaining an open cross-section, (ii) providing a cutting device with a cutting plane opposite to said open cross-section, wherein said cutting plane is provided with one or more water jet cutting elements, and (iii) the water jet cutting of said filling material, wherein said water jet cutting elements are shifted within said cutting plane during the water jet cutting.
  • the present invention provides a cutting device for clearing underwater support piles, wherein said support piles are comprised of a cylindrical wall comprising a filling material, comprising a cutting plane provided with one or more water jet cutting elements, wherein said water jet cutting elements are movable in position within said cutting plane.
  • the present invention provides a use of a cutting device according to the second aspect of the invention, for clearing underwater support piles, wherein said support piles are comprises of a cylindrical wall comprising a filling material.
  • Figures 1 to 4 represent a simplified representation of a method and device for hydromechanically removing filling material in a support pile in aquatic environment.
  • Figure 1 is a schematic representation of a platform 5 at sea 4, wherein the platform 5 is supported on the sea or ocean floor 3 by means of support piles 1.
  • Figure 2 is a schematic representation of a cutting device 10 for removing filling material 6 in a support pile 1 which is fixed in a seabed 3.
  • Figure 3A is a schematic perspective view of the underside of a cutting device 10.
  • Figure 3B also shows a schematic perspective view, wherein one of the water jet elements 15b generates a water jet 23.
  • Figure 4A-F shows in a schematic manner selected features of spirographic trail 22a-f which can be moved along by the water jet cutting elements 15a, 15b.
  • a segment means one or more than one segment.
  • Quoting numerical intervals by endpoints comprises all integers, fractions and/or real numbers between the endpoints, these endpoints included.
  • the present invention provides a method for removing a filling material (6), comprising the steps of: i. providing a cutting device (10) having a cutting plane (12) opposite to said filling material (6), wherein said cutting plane (12) is provided with one or more water jet cutting elements (15a, 15b), and
  • underwater support pile is to be understood as a synonym for the terms “support post”, “post”, “pillar”, “stand”, “column”, “pile”, and indicates preferably a predominantly cylindrical post, which internally comprises a cavity which can be filled with a filling material.
  • Said support pile is or was preferably a part of an underwater structure and acts as an anchoring of said underwater structure in the sea or ocean floor.
  • underwater structure is to be understood as a synonym for the term “offshore structure” and indicates any artificial structure which is situated partly or completely under water.
  • Underwater structures which can be cleared advantageous according to the method of the present invention are, for example, but not limited to pipelines of offshore natural gas or oil fields, supporting pillars of offshore drilling platforms and supporting pillars of offshore wind farms.
  • Figure 1 is a schematic representation of a platform 5 at sea 4, wherein the platform 5 is supported on the sea or ocean floor 3 by means of support piles 1.
  • the term "filling material” is to be understood as a synonym for the term “grout” or concrete, and indicates a cured mixture of cement, water and optionally one or more aggregates or excipients, or may also be understood as a hard soil or soil types, such as rock, or as soft soil or types of soil, such as clay.
  • grout in flowing state was inserted in a column, where it solidified and thus forms part of a support pile that is reinforced and anchored in the ground.
  • the method and the device according to the present invention may also be applied for removing hard stones types such as, for example, granite or similar natural stone or for soft stone types such as, for example, limestone.
  • the method and device can also be applied for drilling sockets, tunnels, and the like.
  • the term "high pressure water jet” should be understood as a water jet having a pressure higher than 50 bar, preferably with a pressure higher than 100 bar, more preferably with a pressure higher than 200 bar and even more preferably with a pressure higher than 300 bar. Most preferably, said water jet has a pressure between 100 bar and 2000 bar.
  • cutting device with a cutting plane is to be understood as a synonym for the term “clearing device” and indicates a device provided with one or more cutting means, such as preferably but not limited to, water jet cutting elements, wherein said cutting means are provided in a two-dimensional cutting plane.
  • water jet cutting element should be understood as a “jet-pipe” or “nozzle” which is suitable to be connected to a water supply pipe and which is provided with a narrowed passage which is intended to increase the pressure of the water jet.
  • said cutting device with said cutting plane is provided with 1 to 8 water jet cutting elements, and more preferably 1 to 4 water jet cutting elements. Most preferably, said cutting plane is provided with 2 water jet cutting elements.
  • FIG. 2 is a schematic representation of a cutting device 10 according to the second aspect of the invention, for removing filling material 6 in a support pile 1 which is fixed in a seabed 3.
  • the device 10 is primarily designed cylindrically with an outer diameter which is substantially smaller than the inner diameter of the support pile 1.
  • the bottom surface or cutting plane 12 of the cylindrical device is provided with two nozzles 15a and 15b for the guiding of a water jet 14 and two mechanical crushing elements 12a and 12b for crushing residual filling material 6.
  • guiding wheels 17a and 17b are provided.
  • FIG. 3A is a schematic perspective view of the underside of a cutting device 10 according to the second aspect of the invention, with indication of two mechanical crushing elements 14a and 14b, two water jet pipes 15a and 15b, two guiding elements 17a and 17b and two discharge pipes 20a and 20b.
  • Figure 3B also shows a schematic perspective view, wherein one of the water jet elements 15b generates a water jet 23.
  • water jet cutting of filling material is to be understood as the removing of filling material with the aid of one or more high pressure water jets and indicates the directing of one or more high pressure water jets on said filling material, thereby obtaining that said filling material is partially or entirely pulverized and/or broken down into smaller elements.
  • the invention provides a method for clearing underwater support piles, wherein said support piles are comprised of a wall comprising a filling material, comprising the steps of: (i) the predominantly transverse cutting of one or more underwater support piles, thereby obtaining an open cross-section, (ii) providing a cutting device with a cutting plane opposite to said open cross-section, wherein said cutting plane is provided with one or more water jet cutting elements, and (iii) the water jet cutting of said filling material, wherein said water jet cutting elements are shifted within said cutting plane during the water jet cutting.
  • This offers the advantage that the high pressure water jets can easily cover a large surface area of filling material.
  • the filling material can be detached from said underwater support piles and then be discharged.
  • the predominantly transverse cutting of one or more underwater support piles is carried out by means of a high pressure water jet.
  • a high pressure water jet to make the cross-section further ensures a precise cut, so that the finally obtained, detached pillars can be re-used in other applications, whether or not underwater.
  • the present invention provides a method according to the first aspect of the invention, wherein during the water jet cutting of the filling material to be removed, an air sleeve or air cushion is provided around said water jet cutting elements.
  • an air cushion is provided around the water jet 23 during the water jet cutting of the filling material 6 to be removed.
  • Such air cushion may be obtained by means of supplying air under increased pressure through the nozzles 16a and 16b.
  • a sufficiently high air pressure will be required for generating an air cushion, and that this pressure is also dependent on the working conditions, such as, for example, the depth below the water surface, and thus also the water pressure, on which said method is carried out.
  • the present invention provides a method according to the first aspect of the invention, wherein the distance of said water jet cutting elements to the centre of the cutting plane is varied during the water jet cutting .
  • the present invention provides a method according to the first aspect of the invention, wherein said cutting plane is circular and rotates around the centre of the cutting plane with a rotational speed coi .
  • This offers the advantage that a limited number of waterjet cutting elements can be used while yet the entire circumference of the cutting plane is within the range of said water jet cutting elements. Thus, the range of the water jet cutting elements is maximized .
  • the rotational speed ⁇ may represent both a constant and a variable speed.
  • the device provides an internal swivel mechanism which is suitable for supplying water through a channel, preferably centrally located in the cutting device, and the subsequent passing of the water through a circular disc 11 via corresponding channels in said circular disk 11. Thus, a circular trail can be travelled .
  • a similar mechanism in the circular disc 11 at the level of the water jet cutting elements 15a and 15b more complex trails as represented in Figure 4 can be obtained. Such configuration allows to let the one or more water jets cover a spirographic trail 22a-f.
  • the present invention provides a method according to the first aspect of the invention, wherein said water jet cutting elements are provided on a circular section, which is located excentrically within said cutting plane and which rotates around its own centre at a rotational speed ⁇ 2 .
  • two or more circular sections may be provided within said cutting plane.
  • said water jet cutting elements are provided on a circular section with a diameter of less than or equal to half the diameter of aforementioned cutting plane, and the centre of said circular section is located halfway between the edge and the centre of afore-mentioned cutting plane.
  • Figure 4A-F shows in a schematic manner selected possibilities of spirographical trails which can be travelled by the water jet devices.
  • an open spirographical trail as in Figure 4A for a filling material with limited strength; or for a dense, closed spirographical trail as in Figure 4F for a filling material with a relatively high strength.
  • the present invention provides a method according to the first aspect of the invention, wherein the ratio of the rotational speed ⁇ 2 with respect to the rotational speed (Oi ranges between 5 and 15.
  • the skilled person is familiar with the mathematical formulas which provide a relationship between the respective rotational speeds u>i and ⁇ 2 of the aforementioned cutting plane and circular section on the one hand, and the eventual form of the obtained trail of one or more water jet cutting elements on the other hand. Applying such formulas makes it possible to define an optimal trail according to the nature and structure of the filling material.
  • afore-mentioned ratio of the rotational speed ⁇ 2 relative to the rotational speed (Oi is between 8 and 12, and even more preferably said ratio is equal to 8, 9, 10, 11 or 12, or any value therein between.
  • afore-mentioned ratio of the rotational speed ⁇ 2 relative to the rotational speed (Oi is decisive for the trail or the path which is travelled by one or more water jet cutting elements. The choice of the ratio may therefore also be determined by the desired trail, wherein the desired trail is determined according to the nature of the filling material.
  • the present invention provides a method according to the first aspect of the invention, wherein said water jet cutting elements are provided with water supply at a pressure between 1 bar and 10 bar and a flow rate of between 100,000 and 1,000,000 litres per hour.
  • said water jet cutting elements are provided with water supply at a pressure of between 4 bar and 10 bar, and more preferably between 6 bar and 10 bar.
  • said water jet cutting elements are provided with water supply at a pressure of 7 bar, 8 bar, 9 bar, or any pressure therein between.
  • said water jet cutting elements are provided with water supply at a flow rate between 200,000 and 800,000 litres per hour, and more preferably between 200,000 and 600,000 litres per hour.
  • said water jet cutting elements are provided with water supply at a flow rate of 300,000, 400,000, 500,000 litres per hour, or any flow rate therein between.
  • the present invention provides a method according to the first aspect of the invention, wherein the pulverized filling material is temporary held in suspension before being discharged.
  • process water is supplied through the supply pipes 21a and 21b for holding the pulverized filling material in suspension.
  • said process water is supplied at a pressure of 2 bar to 25 bar, more preferably of 4 bar to 16 bar and even more preferably of 6 bar to 12 bar.
  • said process water is supplied at a pressure of 7 bar, 8 bar, 9 bar, 10 bar, 11 bar, or any pressure therein between.
  • the present invention provides a method according to the first aspect of the invention, wherein said cutting plane is provided with one or more mechanical crushing elements which are shifted within said cutting plane during the water jet cutting.
  • the present invention provides a cutting device for clearing underwater support piles, wherein said support piles are comprised of a cylindrical wall comprising a filling material, comprising a cutting plane provided with one or more water jet cutting elements, wherein said water jet cutting elements are movable in position within said cutting plane.
  • the present invention provides a cutting device according to the second aspect of the invention, wherein said water jet cutting elements are provided on a circular section, which is arranged rotatably and excentrically within said cutting plane.
  • said water jet cutting elements are provided on a circular section with a diameter smaller than or equal to half the diameter of said cutting plane, and the centre of said circular section is located halfway between the edge and the centre of afore-mentioned cutting plane.
  • the present invention provides a cutting device according to the second aspect of the invention, wherein positioning elements are provided laterally of said cutting plane for centring said cutting device within said support pile.
  • said positioning elements are comprised of two or more rolling elements, for example wheels, in which the rolling direction of said rolling elements corresponds to the direction in which said filling material is removed.
  • said cutting device comprises 3 or 4 positioning elements. More preferably, said positioning elements are arranged radially spread along the circumference of the cylindrical cutting device.
  • the present invention provides a cutting device according to the second aspect of the invention, wherein one or more air supply channels are provided for providing an air sleeve around said water jet cutting elements.
  • one or more air supply channels are provided for providing an air sleeve around said water jet cutting elements.
  • the air supply channels 16a and 16b supply air under a high pressure, and thereby surround the water jets 23, which are generated by the water jet cutting elements 15a and 15b, with an air sleeve.
  • the present invention provides a cutting device according to the second aspect of the invention, wherein said cutting plane is provided with one or more supply pipes for supplying process water.
  • said cutting plane is provided with one or more supply pipes for supplying process water.
  • supply pipes 21a and 21b for process water for holding the pulverized filling material in suspension.
  • the present invention provides a cutting device according to the second aspect of the invention, wherein said cutting plane is provided with discharge pipes for evacuating cut and/or crushed filling material.
  • Such transport ensures that no local build-up of the filling material occurs.
  • said transport is achieved by means of an air lift.
  • Such an air lift allows an operationally easy transport of the pulverized filling material.
  • the present invention provides a cutting device according to the second aspect of the invention, in which the end facing away from the cutting plane of the cutting device is provided with means for suspending said cutting device.
  • the present invention provides a cutting device according to the second aspect of the invention, wherein said cutting plane is provided with mechanical crushing elements.
  • such crushing elements are comprised of a roller having a central axis, which axis is arranged at least partially recessed in the cutting plane and which axis is directed from the edge of the cutting plane to the centre of the cutting plane.
  • the rotation with rotational speed ⁇ ⁇ allows that the crushing elements can be shifted along the entire circumference of the cutting plane with a rotational speed a .
  • one or more crushing elements are provided at different distances to the centre point of the cutting plane.
  • said cutting device with cutting plane is provided with 1 to 8 mechanical crushing elements, and more preferably 1 to 4 mechanical breaking elements. Most preferably, said cutting plane is provided with 2 mechanical breaking elements.
  • the present invention provides a cutting device according to the second aspect of the invention, wherein said mechanical elements are comprised of rollers with one or more cutting edges.
  • Such cutting edges are to be understood as one or more upright edges along the circumference of said rollers. Such upright edges provide a smaller contact surface between the mechanical crushing elements and the filling material to be pulverized. As a result, the applied pressure of the mechanical crushing elements on the filling material to be pulverized is proportionally increased, thereby obtaining a better pulverizing effect.
  • the present invention provides a use of a cutting device according to the second aspect of the invention, for clearing underwater support piles, wherein said support piles are comprised of a cylindrical wall comprising a filling material.

Landscapes

  • 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)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
  • Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)

Abstract

La présente invention concerne un procédé et un dispositif de découpage destiné à enlever des pieux de support immergés comprenant un matériau de remplissage, comprenant les étapes consistant à : (i) découper de manière sensiblement transversale un ou plusieurs pieux de support immergés, de façon à obtenir une section transversale ouverte, (ii) disposer un dispositif de coupe présentant un plan de coupe à l'opposé de ladite section transversale ouverte, ledit plan de coupe étant pourvu d'un ou plusieurs éléments de coupe à jet d'eau, et (iN) découper par jet d'eau ledit matériau de remplissage. Lesdits éléments de coupe à jet d'eau sont décalés à l'intérieur dudit plan de coupe pendant le découpage par jet d'eau.
PCT/IB2015/058460 2014-10-31 2015-11-02 Dispositif de découpage de pieux WO2016067272A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP15808784.1A EP3212851B1 (fr) 2014-10-31 2015-11-02 Machine pour couper des pieux

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
BE2014/0824A BE1022222B1 (nl) 2014-10-31 2014-10-31 Ruiminrichting en werkwijze voor het ruimen van vulmateriaal in offshore structuren
BEBE2014/0824 2014-10-31

Publications (1)

Publication Number Publication Date
WO2016067272A1 true WO2016067272A1 (fr) 2016-05-06

Family

ID=52813837

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2015/058460 WO2016067272A1 (fr) 2014-10-31 2015-11-02 Dispositif de découpage de pieux

Country Status (3)

Country Link
EP (1) EP3212851B1 (fr)
BE (1) BE1022222B1 (fr)
WO (1) WO2016067272A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109024660A (zh) * 2018-07-17 2018-12-18 中国能源建设集团广东省电力设计研究院有限公司 桩基拆卸方法及海上基础拆卸方法
CN112227367A (zh) * 2020-09-30 2021-01-15 中船华南船舶机械有限公司 一种割桩机的割桩方法
WO2023245766A1 (fr) * 2022-06-22 2023-12-28 中交广州航道局有限公司 Processus de construction de dégagement de tête de pieu dcm sous-marin respectueux de l'environnement

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4372707A (en) 1979-11-29 1983-02-08 Pipe Technology Systems, Inc. Pile installation and removal mechanisms in off-shore rigs and method of using same
US5360292A (en) * 1993-07-08 1994-11-01 Flow International Corporation Method and apparatus for removing mud from around and inside of casings
US5381631A (en) * 1993-04-15 1995-01-17 Flow International Corporation Method and apparatus for cutting metal casings with an ultrahigh-pressure abrasive fluid jet
US5704732A (en) 1995-11-29 1998-01-06 Deep Oil Technology Incorporated Deep water piling and method of installing or removing
WO2013019959A2 (fr) 2011-08-02 2013-02-07 Foro Energy Inc. Systèmes et procédés laser permettant le retrait de structures
WO2014080233A1 (fr) 2012-11-26 2014-05-30 W3G Shipping Ltd Structures en mer, ainsi qu'appareil et procédés associés

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2852078A (en) * 1954-08-12 1958-09-16 Jersey Prod Res Co Removal of cement from well casing
DE3208492A1 (de) * 1982-03-09 1983-09-15 Kabushiki Kaisha Komatsu Seisakusho, Tokyo Verfahren und vorrichtung zum einbringen von hohlpfaehlen in den boden
GB2324818B (en) * 1997-05-02 1999-07-14 Sofitech Nv Jetting tool for well cleaning
GR1003157B (el) * 1997-08-14 1999-06-21 Συστημα αυτοματης εμφυτευσης μεταλλινων σωληνων σε θαλασσιους ιζηματογενεις πυθμενες
DE10155105C1 (de) * 2001-11-09 2003-04-10 Bauer Maschinen Gmbh Bohrvorrichtung und Bohrverfahren
BE1020365A4 (nl) * 2012-01-02 2013-08-06 Geosea N V Inrichting en werkwijze voor het boren van schachten in een uit rots, klei en/of aanverwante materialen bestaande ondergrond.
US20140054092A1 (en) * 2012-08-24 2014-02-27 Buckman Jet Drilling, Inc. Rotary jet bit for jet drilling and cleaning

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4372707A (en) 1979-11-29 1983-02-08 Pipe Technology Systems, Inc. Pile installation and removal mechanisms in off-shore rigs and method of using same
US5381631A (en) * 1993-04-15 1995-01-17 Flow International Corporation Method and apparatus for cutting metal casings with an ultrahigh-pressure abrasive fluid jet
US5360292A (en) * 1993-07-08 1994-11-01 Flow International Corporation Method and apparatus for removing mud from around and inside of casings
US5704732A (en) 1995-11-29 1998-01-06 Deep Oil Technology Incorporated Deep water piling and method of installing or removing
WO2013019959A2 (fr) 2011-08-02 2013-02-07 Foro Energy Inc. Systèmes et procédés laser permettant le retrait de structures
WO2014080233A1 (fr) 2012-11-26 2014-05-30 W3G Shipping Ltd Structures en mer, ainsi qu'appareil et procédés associés

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109024660A (zh) * 2018-07-17 2018-12-18 中国能源建设集团广东省电力设计研究院有限公司 桩基拆卸方法及海上基础拆卸方法
CN112227367A (zh) * 2020-09-30 2021-01-15 中船华南船舶机械有限公司 一种割桩机的割桩方法
CN112227367B (zh) * 2020-09-30 2022-04-29 中船华南船舶机械有限公司 一种割桩机的割桩方法
WO2023245766A1 (fr) * 2022-06-22 2023-12-28 中交广州航道局有限公司 Processus de construction de dégagement de tête de pieu dcm sous-marin respectueux de l'environnement

Also Published As

Publication number Publication date
EP3212851B1 (fr) 2021-05-19
EP3212851A1 (fr) 2017-09-06
BE1022222B1 (nl) 2016-03-02

Similar Documents

Publication Publication Date Title
US5256004A (en) Method of forming consolidated earth columns by injection and the relevant plant and column
US8757289B2 (en) Underwater drilling arrangement and method for making a bore in a bed of a water body
EP1525371B1 (fr) Conduite de guidage telescopique de forage en mer
KR101740776B1 (ko) 파이프를 분리하는 방법 및 디바이스
EP3212851B1 (fr) Machine pour couper des pieux
EP2481490A1 (fr) Dispositif et procédé de nettoyage de pieux creux ayant été fournis dans un substrat
JP2006214241A (ja) ドレーンパイプ埋設工法及び建築物等の傾斜，沈下又は浮上防止構造
CN110904957A (zh) 卵碎石地层中大直径高垂直度喷射灌浆桩的施工工法
CN101974905A (zh) 一种空心桩的植桩方法及实施该方法的螺旋钻
CN108193606A (zh) 一种桥墩局部冲刷的防护方法
WO2014055049A2 (fr) Pieu pour fondations profondes (pieu à revêtement par jet), son procédé de production et équipements selon le procédé
BE1020365A4 (nl) Inrichting en werkwijze voor het boren van schachten in een uit rots, klei en/of aanverwante materialen bestaande ondergrond.
CN105113530A (zh) 高压喷射沉井助沉工艺
JP5231889B2 (ja) 場所打ち杭の孔壁防護方法
CN112281826B (zh) 卵碎石地层中旋喷成桩的施工方法
CN102839661A (zh) 旋搅喷射锚管桩施工工艺
KR100869932B1 (ko) 가변식 워터제트 마이크로 쉴드 추진장치와 그를 이용한관로추진공법
CN102383731A (zh) 高压水射流成孔工具、装置以及灌注桩施工方法
FR2595734A1 (fr) Construction et utilisation de trous de forage sous-marins
KR20140089680A (ko) 자체 확경이 가능한 말뚝 및 그 시공방법
JP5827528B2 (ja) 地中杭の引き抜き工法とその装置
KR102297853B1 (ko) 부상토 발생 저감이 가능한 몰탈 파일 형성 공법
KR101769522B1 (ko) 수상 지지축 설치장치
CN103774645A (zh) 一种水泥土和混凝土组合材料桩及其施工方法
JP5643969B2 (ja) 干潟の嵩上げ方法

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 15808784

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

REEP Request for entry into the european phase

Ref document number: 2015808784

Country of ref document: EP