EP0201517B1 - Procede pour l'abattage de la vase dans un bassin portuaire - Google Patents

Procede pour l'abattage de la vase dans un bassin portuaire Download PDF

Info

Publication number
EP0201517B1
EP0201517B1 EP19850904797 EP85904797A EP0201517B1 EP 0201517 B1 EP0201517 B1 EP 0201517B1 EP 19850904797 EP19850904797 EP 19850904797 EP 85904797 A EP85904797 A EP 85904797A EP 0201517 B1 EP0201517 B1 EP 0201517B1
Authority
EP
European Patent Office
Prior art keywords
compressed air
air bell
water
sludge
ooze
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.)
Expired
Application number
EP19850904797
Other languages
German (de)
English (en)
Other versions
EP0201517A1 (fr
Inventor
Albrecht Von Frankenberg
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.)
Hochtief AG
Original Assignee
Hochtief AG
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 Hochtief AG filed Critical Hochtief AG
Publication of EP0201517A1 publication Critical patent/EP0201517A1/fr
Application granted granted Critical
Publication of EP0201517B1 publication Critical patent/EP0201517B1/fr
Expired legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D29/00—Independent underground or underwater structures; Retaining walls
    • E02D29/06—Constructions, or methods of constructing, in water
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02B—HYDRAULIC ENGINEERING
    • E02B3/00—Engineering works in connection with control or use of streams, rivers, coasts, or other marine sites; Sealings or joints for engineering works in general
    • E02B3/02—Stream regulation, e.g. breaking up subaqueous rock, cleaning the beds of waterways, directing the water flow
    • E02B3/023—Removing sediments
    • 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

Definitions

  • the invention relates to a method for the removal of silt deposits lying on the bottom of a port basin, at least one mining machine provided with a compressed air bell being lowered to the level of excavation and being moved longitudinally and / or transversely to the bottom of the port basin, the edge of the compressed air bell being lowered to the port basin bottom and the water is displaced from the compressed air bell until the silt is exposed in the compressed air bell, and whereby silt picked up by the mining machine is conveyed out of the compressed air bell.
  • the invention has for its object to carry out the above-mentioned method so that contamination of the surrounding water no longer takes place and the silt deposits can be drained not only without renewed mixing with water, but also sufficiently and without unwanted rinsing.
  • the invention teaches that the compressed air filling of the compressed air bell is controlled and regulated in accordance with the amount of silt removed so that water does not penetrate again into the silt in the compressed air bell, so that rinsing of pollutants in the silt into the Air bell surrounding water is avoided. - After dismantling a bed of the compressed air bell, the compressed air bell is raised, moved to the next dismantling location and lowered again.
  • the advantages achieved can be seen in the fact that, when the measures according to the invention are implemented, the silt deposits are adequately drained and can be recovered from the harbor floor without disruptive loosening and rinsing.
  • the compressed air bell works in a special way, namely as it were to encapsulate the silt deposits to be mined, which can be extracted in a mechanically dewatered manner by expressing the water and the described control or regulation of the compressed air filling in the compressed air bell, without any disturbing contamination of the surrounding water taking place.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Civil Engineering (AREA)
  • Environmental & Geological Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Paleontology (AREA)
  • Ocean & Marine Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Treatment Of Sludge (AREA)
  • Cleaning By Liquid Or Steam (AREA)

Abstract

Procédé pour l'abattage de la vase dans un bassin portuaire où au moins une abatteuse munie d'un caisson à air comprimé est abaissée au niveau d'abattage et est déplacée transversalement ou longitudinalement sur le fond. La vase prise par l'abatteuse est évacuée du caisson et le remplissage du caisson par l'air comprimé est commandé en fonction de la quantité de la vase enlevée. Le caisson est descendu jusqu'à ce que son bord touche le fond du bassin. L'eau sera chassée du caisson jusqu'à ce que la vase repose à découvert dans l'accumulateur.

Claims (1)

  1. Procédé d'extraction de dépôts limoneux au fond d'un bassin portuaire, au moins une machine d'extraction munie d'une cloche à air comprimé étant descendue au niveau d'extraction et déplacée le long du et/ou transversalement au fond du bassin portuaire, la cloche à air comprimé étant abaissée avec son bord jusqu'au fond du bassin portuaire et l'eau étant expulsée de ladite cloche à air comprimé jusqu'à ce que la vase soit dégagée à l'intérieur de ladite cloche à air comprimé, et la vase recueillie par la machine d'extraction étant évacuée de la cloche à air comprimé, caractérisé par le fait que le remplissage d'air comprimé de la cloche à air comprimé est commandé ou réglé en fonction de la quantité de vase évacuée de telle façon que l'eau ne pénètre pas une nouvelle fois dans la vase contenue dans la cloche à air comprimé de sorte qu'une évacuation des substances nocives contenues dans la vase dans l'eau environnant la cloche à air comprimé est évitée.
EP19850904797 1984-10-31 1985-09-19 Procede pour l'abattage de la vase dans un bassin portuaire Expired EP0201517B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3439810 1984-10-31
DE19843439810 DE3439810C1 (de) 1984-10-31 1984-10-31 Verfahren zum Abbau von auf der Sohle eines Hafenbeckens liegenden Schlickablagerungen

Publications (2)

Publication Number Publication Date
EP0201517A1 EP0201517A1 (fr) 1986-11-20
EP0201517B1 true EP0201517B1 (fr) 1989-06-07

Family

ID=6249182

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19850904797 Expired EP0201517B1 (fr) 1984-10-31 1985-09-19 Procede pour l'abattage de la vase dans un bassin portuaire

Country Status (4)

Country Link
EP (1) EP0201517B1 (fr)
JP (1) JPS62501089A (fr)
DE (1) DE3439810C1 (fr)
WO (1) WO1986002679A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4134195A1 (de) * 1991-10-16 1993-04-22 Moebius Josef Bau Verfahren zum abtragen und einbringen von sedimenten, schlicken oder anderen materialien von einem bzw. auf einen gewaesserboden und vorrichtung zur durchfuehrung des verfahrens
DE4315764A1 (de) * 1993-05-07 1994-11-10 Gemeinnuetzige Ges Fuer Bescha Verfahren und Vorrichtung zur Entschlammung von flachen Gewässern

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3160966A (en) * 1962-06-20 1964-12-15 James C Skakel Submerged dredging device with air filled hood
NL168289C (nl) * 1973-02-21 1982-03-16 Ihc Holland Nv Graafinrichting.
JPS55114688A (en) * 1979-02-23 1980-09-04 Yoshio Suetsugu Submarine work vessel
JPS5948253B2 (ja) * 1981-09-29 1984-11-26 株式会社奥村組 ケ−ソン工法における掘削揚土装置

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4134195A1 (de) * 1991-10-16 1993-04-22 Moebius Josef Bau Verfahren zum abtragen und einbringen von sedimenten, schlicken oder anderen materialien von einem bzw. auf einen gewaesserboden und vorrichtung zur durchfuehrung des verfahrens
DE4315764A1 (de) * 1993-05-07 1994-11-10 Gemeinnuetzige Ges Fuer Bescha Verfahren und Vorrichtung zur Entschlammung von flachen Gewässern

Also Published As

Publication number Publication date
JPS62501089A (ja) 1987-04-30
WO1986002679A1 (fr) 1986-05-09
DE3439810C1 (de) 1986-01-09
EP0201517A1 (fr) 1986-11-20

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