EP0860556A1 - Procédé et dispositif pour le dragage des tranchées au fond de plans d'eau - Google Patents

Procédé et dispositif pour le dragage des tranchées au fond de plans d'eau Download PDF

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Publication number
EP0860556A1
EP0860556A1 EP98200227A EP98200227A EP0860556A1 EP 0860556 A1 EP0860556 A1 EP 0860556A1 EP 98200227 A EP98200227 A EP 98200227A EP 98200227 A EP98200227 A EP 98200227A EP 0860556 A1 EP0860556 A1 EP 0860556A1
Authority
EP
European Patent Office
Prior art keywords
trench
water
water jet
carrier head
bed material
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.)
Withdrawn
Application number
EP98200227A
Other languages
German (de)
English (en)
Inventor
Etienne Clymanns
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.)
Dredging International NV
Original Assignee
Dredging International 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 Dredging International NV filed Critical Dredging International NV
Publication of EP0860556A1 publication Critical patent/EP0860556A1/fr
Withdrawn legal-status Critical Current

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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
    • E02F5/02—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
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F5/00—Dredgers or soil-shifting machines for special purposes
    • E02F5/28—Dredgers or soil-shifting machines for special purposes for cleaning watercourses or other ways
    • E02F5/287—Dredgers or soil-shifting machines for special purposes for cleaning watercourses or other ways with jet nozzles

Definitions

  • the invention relates to a method for making a trench under water, wherein bed material of the trench for excavating is processed by means of water under pressure flowing out of at least one water jet.
  • This known method requires a considerable amount of time since water is sprayed onto the bed material in a manner which is difficult to control, wherein an additional transporting operation is necessary to remove eroded bed material, whereby this known method has a low efficiency.
  • the invention improves the known method as stated in the characteristic of claim 1.
  • the thrust force of the water is used efficiently for displacing bed material out of the trench so that no, or less, transport is required later.
  • the invention also provides a device as stated in claim 7.
  • the invention further provides preferred embodiments of the device in the claims 8-12.
  • the device 1 comprises a vessel 2 in the form of a dredger having at least one pump 3 for supplying water under pressure via a conduit 5 adjustable by suspension means 4 to water jets 7 and auxiliary water jets 8 supported by a carrier head 6.
  • Such a device 1 allows a trench 9 to be made of for instance about 1 m deep and 10 m wide per water jet in one movement.
  • Conduit 5 comprises a water feed 11 and an auxiliary water feed 12 for supplying water under pressure respectively to water jets 7 and auxiliary water jets 8, which feeds 11, 12 can be controlled individually by means of valves (not shown). It is also possible to provide the auxiliary water jets 8 with water via the auxiliary water feed 12 by means of another pump.
  • the direction arrow 13 indicates the direction in which carrier head 6 is further towed by the vessel 2 defining the direction of the displacement path of trench 9.
  • Carrier head 6 and conduit 5 are held in a suitable position respectively via support member 16 adjustable with adjusting means 14 and via suspension means 4.
  • the adjusting means 17 allow the carrier head 6 to be positioned via a control member 15 and water jets 7 and auxiliary water jets 8 to thus be directed by pivoting of carrier head 6 over its longitudinal axis 18.
  • the auxiliary water jets 8 serve to clear away bed material in front of the carrier head 6 in the direction 13 of the path of movement of water jets 7.
  • auxiliary water jets 8 extend roughly axially relative to the trench for excavating, whereby bed material is eroded axially of the trench 9 for excavating by water under pressure from auxiliary water jets 8 so that carrier head 6 can be moved by vessel 2 via suspension means 4 in the displacement direction 13 of the trench for excavating.
  • Water jets 7 spray water under pressure in a spraying direction (arrow 18) lying transversely of the trench direction along the bed material of the trench 9 for excavating as well as the bed material eroded by auxiliary water jets 8 and displace this material from the trench 9 to the side edges 20.
  • the carrier head 6 is preferably hydraulically adjustable so that:

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Underground Or Underwater Handling Of Building Materials (AREA)
  • Earth Drilling (AREA)
EP98200227A 1997-02-20 1998-01-27 Procédé et dispositif pour le dragage des tranchées au fond de plans d'eau Withdrawn EP0860556A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL1005330 1997-02-20
NL1005330A NL1005330C2 (nl) 1997-02-20 1997-02-20 Werkwijze voor het maken van een geul onder de waterlijn en inrichting hiervoor.

Publications (1)

Publication Number Publication Date
EP0860556A1 true EP0860556A1 (fr) 1998-08-26

Family

ID=19764461

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98200227A Withdrawn EP0860556A1 (fr) 1997-02-20 1998-01-27 Procédé et dispositif pour le dragage des tranchées au fond de plans d'eau

Country Status (2)

Country Link
EP (1) EP0860556A1 (fr)
NL (1) NL1005330C2 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002090667A1 (fr) * 2001-05-09 2002-11-14 Progenitive Services Limited Appareil et procede permettant de propulser un fluide

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29195C (de) * R. STONE in New-York, V. St. A Hydraulischer Baggerapparat zur Beseitigung von Sandbänken und dergleichen
US1698515A (en) * 1926-03-18 1929-01-08 Stewart Robert Thomson Method of and means for use in dredging
GB2038902A (en) * 1979-01-04 1980-07-30 Vnii Gidrotekh Meliorat Machine for Cleaning Reclamation Channels from Deposits
EP0243994A1 (fr) * 1986-04-14 1987-11-04 Reijer Nicolaas Van Weezenbeek Dispositif pour le déplacement d'un sédiment sous l'eau et procédé d'utilisation d'un tel dispositif
EP0548707A1 (fr) * 1991-12-24 1993-06-30 ANTON MÜSING GmbH & CO. KG Méthode et dispositif pour augmenter la profondeur des cours d'eau

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29195C (de) * R. STONE in New-York, V. St. A Hydraulischer Baggerapparat zur Beseitigung von Sandbänken und dergleichen
US1698515A (en) * 1926-03-18 1929-01-08 Stewart Robert Thomson Method of and means for use in dredging
GB2038902A (en) * 1979-01-04 1980-07-30 Vnii Gidrotekh Meliorat Machine for Cleaning Reclamation Channels from Deposits
EP0243994A1 (fr) * 1986-04-14 1987-11-04 Reijer Nicolaas Van Weezenbeek Dispositif pour le déplacement d'un sédiment sous l'eau et procédé d'utilisation d'un tel dispositif
EP0548707A1 (fr) * 1991-12-24 1993-06-30 ANTON MÜSING GmbH & CO. KG Méthode et dispositif pour augmenter la profondeur des cours d'eau

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002090667A1 (fr) * 2001-05-09 2002-11-14 Progenitive Services Limited Appareil et procede permettant de propulser un fluide

Also Published As

Publication number Publication date
NL1005330C2 (nl) 1998-08-24

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