NO20012823L - Apparatus, especially for underwater digging - Google Patents

Apparatus, especially for underwater digging

Info

Publication number
NO20012823L
NO20012823L NO20012823A NO20012823A NO20012823L NO 20012823 L NO20012823 L NO 20012823L NO 20012823 A NO20012823 A NO 20012823A NO 20012823 A NO20012823 A NO 20012823A NO 20012823 L NO20012823 L NO 20012823L
Authority
NO
Norway
Prior art keywords
units
seabed
cables
sections
distance
Prior art date
Application number
NO20012823A
Other languages
Norwegian (no)
Other versions
NO20012823D0 (en
Inventor
Erik Gloppen
Goesta Nilsson
Original Assignee
Nordic Offshore As
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 Nordic Offshore As filed Critical Nordic Offshore As
Publication of NO20012823D0 publication Critical patent/NO20012823D0/en
Publication of NO20012823L publication Critical patent/NO20012823L/en

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F3/00—Dredgers; Soil-shifting machines
    • E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/88—Dredgers; Soil-shifting machines mechanically-driven with arrangements acting by a sucking or forcing effect, e.g. suction dredgers
    • E02F3/90—Component parts, e.g. arrangement or adaptation of pumps
    • E02F3/92—Digging elements, e.g. suction heads
    • E02F3/9206—Digging devices using blowing effect only, like jets or propellers
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F5/00—Dredgers or soil-shifting machines for special purposes
    • E02F5/006—Dredgers or soil-shifting machines for special purposes adapted for working ground under water not otherwise provided for
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F5/00—Dredgers or soil-shifting machines for special purposes
    • E02F5/02—Dredgers or soil-shifting machines for special purposes for digging trenches or ditches
    • E02F5/10—Dredgers or soil-shifting machines for special purposes for digging trenches or ditches with arrangements for reinforcing trenches or ditches; with arrangements for making or assembling conduits or for laying conduits or cables
    • E02F5/104—Dredgers or soil-shifting machines for special purposes for digging trenches or ditches with arrangements for reinforcing trenches or ditches; with arrangements for making or assembling conduits or for laying conduits or cables for burying conduits or cables in trenches under water
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F5/00—Dredgers or soil-shifting machines for special purposes
    • E02F5/02—Dredgers or soil-shifting machines for special purposes for digging trenches or ditches
    • E02F5/10—Dredgers or soil-shifting machines for special purposes for digging trenches or ditches with arrangements for reinforcing trenches or ditches; with arrangements for making or assembling conduits or for laying conduits or cables
    • E02F5/104—Dredgers or soil-shifting machines for special purposes for digging trenches or ditches with arrangements for reinforcing trenches or ditches; with arrangements for making or assembling conduits or for laying conduits or cables for burying conduits or cables in trenches under water
    • E02F5/107—Dredgers or soil-shifting machines for special purposes for digging trenches or ditches with arrangements for reinforcing trenches or ditches; with arrangements for making or assembling conduits or for laying conduits or cables for burying conduits or cables in trenches under water using blowing-effect devices, e.g. jets

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Earth Drilling (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
  • Other Liquid Machine Or Engine Such As Wave Power Use (AREA)

Abstract

Grøfteenhet som anvendes for å grave grøfter på sjøbunnen for legging av rørledninger eller kabler. Enheten omfatter en strålearm med et antall seksjoner, hvor hver seksjon omfatter minst et munnstykke, midler for å tilføre fluid til munnstykkene i minst to^ seksjoner, og midler for separat å kontrollere strømningskarakteristikk til fluid som tilføres til hver individuelle seksjon av strålearmen. To eller flere enheter av slike apparater kan anvendes i tandem for å utvide fluidiseringsperioden av et bestemt område av sjøbunnen. Dette er særlig nyttig når rørene eller kablene er relativt stive. Fluidiseringsperioden er avhengig av avstanden mellom enhetene, og beregnes som en funksjon av karakteristikken til sjøbunnen og kapasiteten til de individuelle enhetene. Avstanden mellom enhetene bestemmes av lengden til en regulerbar leddforbindelse.Trench unit used to dig trenches on the seabed for laying pipelines or cables. The unit comprises a jet arm having a plurality of sections, each section comprising at least one nozzle, means for supplying fluid to the nozzles for at least two sections, and means for separately controlling fluid flow characteristics applied to each individual section of the jet arm. Two or more units of such apparatus may be used in tandem to extend the fluidization period of a particular area of the seabed. This is particularly useful when the pipes or cables are relatively rigid. The fluidization period depends on the distance between the units and is calculated as a function of the characteristics of the seabed and the capacity of the individual units. The distance between the units is determined by the length of an adjustable link.

NO20012823A 2000-06-12 2001-06-08 Apparatus, especially for underwater digging NO20012823L (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB0014348A GB2363407A (en) 2000-06-12 2000-06-12 Trenching apparatus

Publications (2)

Publication Number Publication Date
NO20012823D0 NO20012823D0 (en) 2001-06-08
NO20012823L true NO20012823L (en) 2001-12-13

Family

ID=9893497

Family Applications (1)

Application Number Title Priority Date Filing Date
NO20012823A NO20012823L (en) 2000-06-12 2001-06-08 Apparatus, especially for underwater digging

Country Status (4)

Country Link
US (1) US20020017041A1 (en)
EP (1) EP1167637A3 (en)
GB (1) GB2363407A (en)
NO (1) NO20012823L (en)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB0022002D0 (en) * 2000-09-07 2000-10-25 Global Marine Systems Ltd Method and apparatus for accessing underwater cables or pipes
DK175610B1 (en) * 2003-02-28 2004-12-27 Alcatel Submarine Networks Mar Coil tool comprising a hook with trigger mechanism
GB2438405A (en) * 2006-05-22 2007-11-28 Nicholas Victor Sills Underwater trenching and excavation apparatus
GB201122117D0 (en) * 2011-12-22 2012-02-01 Ihc Engineering Business Ltd Pump apparatus
DE102014205445A1 (en) * 2014-03-24 2015-09-24 Robert Bosch Gmbh circular saw blade
GB201513484D0 (en) * 2015-07-30 2015-09-16 Ihc Engineering Business Ltd Underwater trenching apparatus and pumping apparatus
CN105220726A (en) * 2015-10-16 2016-01-06 上海交通大学 Native device is broken through in the controlled spray of flow
CN110029696B (en) * 2019-04-08 2024-02-20 国网浙江省电力有限公司舟山供电公司 Double-operation-mode submarine cable trencher
EP3800297A1 (en) 2019-10-02 2021-04-07 Soil Machine Dynamics Limited Method and apparatus for inserting an elongate object into a trench in a sea floor
EP3832026B1 (en) * 2019-12-05 2023-07-26 Soil Machine Dynamics Limited Apparatus for locating elongate object in a trench in a floor of a body of water
EP4432495A2 (en) * 2021-06-28 2024-09-18 Soil Machine Dynamics Limited Apparatus for inserting an elongate object into a trench

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1286521A (en) * 1969-04-10 1972-08-23 Nederlandse Offshore Co Method of burying sub-sea pipelines, cables and the like
GB1219879A (en) * 1969-05-23 1971-01-20 Shell Int Research A method and an apparatus for burying a pipeline in the bottom of a body of water
US3751927A (en) * 1972-02-22 1973-08-14 Brown & Root Apparatus for entrenching submerged elongate structures
NO145205C (en) * 1979-04-06 1982-02-03 Magne Prestegaarden DEVICE FOR EXCAVING A WIRE IN THE SEA.
US4330225A (en) * 1979-09-24 1982-05-18 Santa Fe International Corporation System for entrenching submerged elongated structures
GB2075085A (en) * 1980-04-24 1981-11-11 Hoad Design & Eng Ltd Apparatus for cutting trenches
JPS57137531A (en) * 1981-02-20 1982-08-25 Kokusai Denshin Denwa Co Ltd <Kdd> Excavating method and device for ditch in bottom of water
IT1138764B (en) * 1981-05-04 1986-09-17 Snam Progetti UNDERGROUND DEVICE FOR UNDERGROUND OR UNDERGROUND
JPS5820839A (en) * 1981-07-31 1983-02-07 Sumitomo Electric Ind Ltd Seabed cable layer
JPS5865824A (en) * 1981-10-14 1983-04-19 Sumitomo Electric Ind Ltd Excavator for seabed
US4516880A (en) * 1982-04-19 1985-05-14 Martin Charles F Underwater trenching apparatus
GB2247261A (en) * 1990-08-20 1992-02-26 British Gas Plc Method and tool for seabed excavation
GB2252776B (en) * 1991-02-14 1995-04-12 British Gas Plc Formation of a cavity in ground
NL9400605A (en) * 1994-04-15 1995-11-01 Oord Acz B V Van Method and device for burying an elongated object under water.

Also Published As

Publication number Publication date
US20020017041A1 (en) 2002-02-14
EP1167637A3 (en) 2002-05-15
GB0014348D0 (en) 2000-08-02
NO20012823D0 (en) 2001-06-08
EP1167637A2 (en) 2002-01-02
GB2363407A (en) 2001-12-19

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Legal Events

Date Code Title Description
FC2A Withdrawal, rejection or dismissal of laid open patent application