EP0897034A1 - Système automatique pour l'implantation de tubes métalliques dans des fonds de mer sédimentaires - Google Patents

Système automatique pour l'implantation de tubes métalliques dans des fonds de mer sédimentaires Download PDF

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Publication number
EP0897034A1
EP0897034A1 EP98600013A EP98600013A EP0897034A1 EP 0897034 A1 EP0897034 A1 EP 0897034A1 EP 98600013 A EP98600013 A EP 98600013A EP 98600013 A EP98600013 A EP 98600013A EP 0897034 A1 EP0897034 A1 EP 0897034A1
Authority
EP
European Patent Office
Prior art keywords
tube
metal
metal tube
grabs
seabed
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.)
Granted
Application number
EP98600013A
Other languages
German (de)
English (en)
Other versions
EP0897034B1 (fr
Inventor
Constantinos Inst. of Marine Biol. Crete Dounas
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.)
Institute of Marine Biology of Creta
Original Assignee
Institute of Marine Biology of Creta
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 Institute of Marine Biology of Creta filed Critical Institute of Marine Biology of Creta
Publication of EP0897034A1 publication Critical patent/EP0897034A1/fr
Application granted granted Critical
Publication of EP0897034B1 publication Critical patent/EP0897034B1/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
    • 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
    • E02D13/00—Accessories for placing or removing piles or bulkheads, e.g. noise attenuating chambers
    • E02D13/04—Guide devices; Guide frames

Definitions

  • the invention refers to an integrated system for the implantation of metal tubes from the surface of the sea to marine sedimentary seabed.
  • the system consists of a mechanism with grabs, that can hold tightly the metal tube from its upper part aiming at deploying it from the surface to the bottom in a vertical position.
  • the support vessel winch is used for the deployment.
  • the grabs hold the metal tube through a watertight seal to the lower part of a flexible water tube which is connected to top of the metal tube.
  • the other end of the flexible tube is connected to an autonomous water pump on the working deck of the support vessel. By activating the pump, pressurised water comes out from the lower end of the metal tube, washing out the sediment particles, gradually creating a narrow hole that allows the lowering of the tube to the desired depth.
  • the final penetration depth is controlled by special shoes attached to the main body of the mechanism which prevent further penetration of the metal tube when they come in contact with the seabed.
  • the operation of the pump is interrupted and a special tube release on the grab holding mechanism is activated.
  • the main body of the system with the holding grabs and the shoes as well as the flexible tube are brought back to the vessel's working deck in order to be reused for a new tube implantation.
  • the invention aims to protect fishing grounds and marine sensitive habitats from the illegal use of towed fishing gears (bottom trawling).
  • bottom trawling The adverse effects of trawling activities upon the marine organisms and the biota have been well studied and documented scientifically.
  • the use of bottom trawls within the three nautical miles from the coast (or up to the 50 metres contour depth) and also above sea grass meadows (Posidonia oceanica beds) shall be prohibited (article 3).
  • the implementation of effective controls is not always possible and as a result in many areas, vessels at sea are not controlled throughout the fishing period.
  • the integrated system for the automatic implantation of metal tubes in soft bottom substrates can offer a high level of protection to marine seagrass beds and nursery grounds from illegal trawling.
  • the method can be used as a cost effective alternative to the deployment of antitrawling artificial reefs in areas where urgent action has to be taken. Also, it is by far more economic, is reversible, allows the protection of extensive areas, does not aggregate fish and does not affect passive fishing gears, furthermore it is simple and does not require long term construction implications.
  • the metal tubes will be implanted in such a way that their major part will be buried in the sediment and only the upper part of the tube will remain protruding above the seabed.
  • the distance between the metal tubes is in the order of tens to hundreds metres, depending on the surface of the area that is preselected for protection.
  • a towed fishing gear comes in contact with the metal tube there are two possibilities: either the gear is stopped, or the ground rope of the trawl passes over the metal tube and consequently the trawling net is seriously damaged.
  • Another application of the invention is the use of the implanted metal tubes as an alternative to conventional mooring systems in marine and freshwater environments (e.g. concrete blocks, sandbags, embedding anchors, etc.)
  • a working platform e.g. vessel
  • the main body of the implantation system consists of a metal frame that supports a pair of grabs that could hold tightly a metal tube (e..g. standard 6 metre long galvanised iron or steel tubes) from its upper part aiming at deploying it from the surface to the bottom in a vertical position.
  • the vessel's winch wire connected to the system's metal frame and the crane will be used for the metal tube deployment.
  • the grabs hold the metal tube through a watertight seal to the lower part of a flexible water tube which is connected to top of the metal tube.
  • the other end of the flexible water tube is connected with a water pump located on the working deck.
  • the holding mechanism of the grabs could be hydraulic, or simple mechanic (e.g. return springs) or a mixed type.
  • the water pump When the lower part of the metal tube comes in contact with the seabed the water pump is activated and as a result pressurised water comes out from the lower end of the metal tube, washing out the sediment particles and thus gradually creating a narrow hole in the seabed.
  • This procedure allows the lowering of the metal tube to the desired depth controlled by special metal shoes attached to the main metal frame of the system that prevent further tube penetration when they come in contact with the seabed.
  • the attachment of these shoes to the main metal frame of the system can be regulated according to the desired penetration depth.
  • the upper part of the implanted tube protrudes a predefined distance above the seabed.
  • the tube holding mechanism (hydraulic and/or mechanic) is decoupled and as a result the system minus the tube can be brought back to the vessel's deck in order to be reused for a new tube implantation.
  • Figure 1A shows a bird's-eye view of the system's main body with the two grabs (3 and 4) that are stably connected, the first (3,) to the main metal frame of the system (1) and the second (4) to a metal plate that can reciprocate freely on cylindrical guides (5), connected stably to the internal sides of the main metal frame (1).
  • a hydraulic piston (6) which is fed by an oil pump located on the support vessel, when activated, moves the metal plate (2) and consequently the grab (4) that is stably connected to it.
  • Both grabs hold tightly the upper part of the metal tube (7) and at the same time the lower part of a flexible water tube (8) which by having slightly larger diameter surrounds as external casing the upper part of the metal tube.
  • the movement of the metal plate (2) towards the grab (3) creates the hold and seal on both tubes (7, 8) and also compresses the two return spiral springs (9).
  • the arrow indicates the direction of the movement of the hydraulic piston (6).
  • the arrow shows the removal direction of the metal plate (2) towards the side of the frame that bears the hydraulic piston (6). This removal is caused by the expansion of the two springs (10) when the hydraulic piston (6) is deactivated. The dynamic energy of the two springs move backwards the metal plate (2) and consequently the grab (4), finally releasing both the metal and the flexible tubes (7, 8).
  • FIG 2 an enlarged elevated side view of one of the two shoes that are stably attached to the external sides of the main metal frame of the system is shown. It consists of the shoe pad (1), of which the lower surface comes in contact with the seabed, a vertical arm (2) stably connected with the shoe pad and a horizontal arm (3) that is semi-permanently connected with the vertical arm (2) and from the other side is stably connected to the external side of the metal frame of the system (4).
  • FIGs 3A, 3B and 3C a diagrammatic presentation of three successive operational phases of a tube implantation is given.
  • figure 3A a side view of the metal frame (1) and the two shoes of the system (2) and also the metal tube (4), the flexible water tube (5) and the oil supply tube (6) to the system's hydraulic piston are depicted.
  • the main metal frame is deployed by wire (3) from the winch of the supporting vessel.
  • a water pump located on the supporting vessel deck is activated and pressurised water is pumped through the flexible tube (5) and the metal tube (4), washing out the sediment gradually creating a narrow hole (8) that allows the lowering of the metal tube into the seabed.

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)
  • Earth Drilling (AREA)
  • Farming Of Fish And Shellfish (AREA)
EP19980600013 1997-08-14 1998-07-21 Système automatique pour l'implantation de tubes métalliques dans des fonds de mer sédimentaires Expired - Lifetime EP0897034B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GR97100318 1997-08-14
GR97010318 1997-08-14

Publications (2)

Publication Number Publication Date
EP0897034A1 true EP0897034A1 (fr) 1999-02-17
EP0897034B1 EP0897034B1 (fr) 2003-05-28

Family

ID=10943046

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19980600013 Expired - Lifetime EP0897034B1 (fr) 1997-08-14 1998-07-21 Système automatique pour l'implantation de tubes métalliques dans des fonds de mer sédimentaires

Country Status (6)

Country Link
EP (1) EP0897034B1 (fr)
DE (1) DE69814996T2 (fr)
DK (1) DK0897034T3 (fr)
ES (1) ES2200296T3 (fr)
GR (1) GR1003157B (fr)
PT (1) PT897034E (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GR20000100301A (el) 2000-09-05 2002-07-31 Κωνσταντινος Ντουνας Προστατευτικος-παραγωγικος τεχνητος υφαλος
WO2003074795A1 (fr) * 2002-03-04 2003-09-12 Fast Frames (Uk) Limited Systeme de battage de pieux et pieu utilise avec ce systeme
WO2007059837A1 (fr) * 2005-11-26 2007-05-31 Menck Gmbh Dispositif de guidage de pieu pour la stabilisation de pieux minces
BE1022222B1 (nl) * 2014-10-31 2016-03-02 D.E.C.O. Nv Ruiminrichting en werkwijze voor het ruimen van vulmateriaal in offshore structuren
WO2017081495A1 (fr) 2015-11-11 2017-05-18 Hellenic Center For Marine Research (Hcmr) Récif artificiel pour plongée récréative
JP2018062778A (ja) * 2016-10-13 2018-04-19 ジャパンパイル株式会社 建設機材の受け台

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB201407991D0 (en) 2014-05-06 2014-06-18 Renewable Hydrocarbons Ltd Sub-sea piling
CN112392036A (zh) * 2020-11-10 2021-02-23 徐守田 带有泥浆循环、分离、清渣功能的灌注桩施工设备及方法

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3750609A (en) * 1969-02-14 1973-08-07 Bolt Associates Inc Powerful thruster method and apparatus suitable for driving a member such as an anchor or pile into the earth, and anchoring and pile apparatus
US3851490A (en) * 1972-07-28 1974-12-03 Kumagai Gumi Co Ltd Construction pile having fluid injection means
US4102147A (en) * 1975-10-13 1978-07-25 Hollandsche Beton Groep Nv Submersible positioning and guiding apparatus for pile driving
GB2003532A (en) * 1977-09-02 1979-03-14 Standard Oil Co Scissor well template
US4257721A (en) * 1979-04-30 1981-03-24 Haynes Harvey H System for placement of piles into the seafloor

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3750609A (en) * 1969-02-14 1973-08-07 Bolt Associates Inc Powerful thruster method and apparatus suitable for driving a member such as an anchor or pile into the earth, and anchoring and pile apparatus
US3851490A (en) * 1972-07-28 1974-12-03 Kumagai Gumi Co Ltd Construction pile having fluid injection means
US4102147A (en) * 1975-10-13 1978-07-25 Hollandsche Beton Groep Nv Submersible positioning and guiding apparatus for pile driving
GB2003532A (en) * 1977-09-02 1979-03-14 Standard Oil Co Scissor well template
US4257721A (en) * 1979-04-30 1981-03-24 Haynes Harvey H System for placement of piles into the seafloor

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GR20000100301A (el) 2000-09-05 2002-07-31 Κωνσταντινος Ντουνας Προστατευτικος-παραγωγικος τεχνητος υφαλος
WO2003074795A1 (fr) * 2002-03-04 2003-09-12 Fast Frames (Uk) Limited Systeme de battage de pieux et pieu utilise avec ce systeme
GB2402158A (en) * 2002-03-04 2004-12-01 Fast Frames Pile driving system and pile for engagement with said system
GB2402158B (en) * 2002-03-04 2005-09-28 Fast Frames Pile driving system and pile for engagement with said system
US6994493B2 (en) 2002-03-04 2006-02-07 Fast Frames (Uk) Limited Pile driving system and pile for engagement with said system
WO2007059837A1 (fr) * 2005-11-26 2007-05-31 Menck Gmbh Dispositif de guidage de pieu pour la stabilisation de pieux minces
BE1022222B1 (nl) * 2014-10-31 2016-03-02 D.E.C.O. Nv Ruiminrichting en werkwijze voor het ruimen van vulmateriaal in offshore structuren
WO2017081495A1 (fr) 2015-11-11 2017-05-18 Hellenic Center For Marine Research (Hcmr) Récif artificiel pour plongée récréative
JP2018062778A (ja) * 2016-10-13 2018-04-19 ジャパンパイル株式会社 建設機材の受け台

Also Published As

Publication number Publication date
GR970100318A (el) 1999-04-30
PT897034E (pt) 2003-09-30
DE69814996D1 (de) 2003-07-03
DK0897034T3 (da) 2003-09-29
DE69814996T2 (de) 2004-03-11
EP0897034B1 (fr) 2003-05-28
GR1003157B (el) 1999-06-21
ES2200296T3 (es) 2004-03-01

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