EP0201517A1 - Procede pour l'abattage de la vase dans un bassin portuaire. - Google Patents

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

Info

Publication number
EP0201517A1
EP0201517A1 EP19850904797 EP85904797A EP0201517A1 EP 0201517 A1 EP0201517 A1 EP 0201517A1 EP 19850904797 EP19850904797 EP 19850904797 EP 85904797 A EP85904797 A EP 85904797A EP 0201517 A1 EP0201517 A1 EP 0201517A1
Authority
EP
European Patent Office
Prior art keywords
compressed air
silt
air bell
water
lowered
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
EP19850904797
Other languages
German (de)
English (en)
Other versions
EP0201517B1 (fr
Inventor
Frankenberg Albrecht Von
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 generically to a method for mining silt deposits lying on the bottom of a harbor basin, at least one mining machine provided with a compressed air bell being lowered to the level of mining and being moved longitudinally and / or transversely to the harbor basin bottom, furthermore by the mining machine absorbed silt is conveyed out of the compressed air bell and the compressed air filling of the compressed air bell is controlled or regulated in accordance with the amount of silt removed.
  • the term harbor basin also includes similar bodies of water in the context of the invention. Sludge deposits are mineral material of all grain sizes as well as sinking and floating substances. They can contain polluting pollutants.
  • the object of the invention is to implement the generic method in such a way that the silt deposits can be dewatered not only without renewed mixing with water, but sufficiently and without unwanted rinsing.
  • the invention teaches that the edge of the compressed air bell, ie through the silt deposits, is lowered to the bottom of the harbor basin and that the water is displaced from the compressed air bell until the silt is exposed in the compressed air bell. It is then not covered by water and is, as it were, dry.
  • the compressed air filling is also controlled and / or regulated in accordance with the team, devices and the like located in the bell. - 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 mud deposits that have been picked up can e.g. are conveyed out of the compressed air bell via locks or also by means of special feed pumps with a feed line. Water does not penetrate into the compressed air bell because of the described control or regulation.
  • the advantages achieved can be seen in the fact that when the measures according to the invention are implemented, the silt deposits can be adequately dewatered and can be recovered from a harbor floor without disruptive loosening and rinsing.
  • the compressed air bell works in a special way, namely as it were to isolate the sludge deposits to be mined, which can surprisingly be extracted mechanically dewatered by squeezing out the water when the compressed air bell is filled with compressed air.

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.
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 true EP0201517A1 (fr) 1986-11-20
EP0201517B1 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)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4134195C2 (de) * 1991-10-16 1996-03-07 Moebius Josef Bau Vorrichtung zum Abtragen und Einbringen von Sedimenten, Schlick oder anderen Materialien von einem bzw. auf einen Gewässerboden
DE4315764C2 (de) * 1993-05-07 1997-12-18 Gemeinnuetzige Ges Fuer Bescha 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

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO8602679A1 *

Also Published As

Publication number Publication date
JPS62501089A (ja) 1987-04-30
WO1986002679A1 (fr) 1986-05-09
DE3439810C1 (de) 1986-01-09
EP0201517B1 (fr) 1989-06-07

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