EP2808452B1 - Équipement de dragage et procédé pour fonds océaniques ayant des polluants et/ou des substances toxiques - Google Patents

Équipement de dragage et procédé pour fonds océaniques ayant des polluants et/ou des substances toxiques Download PDF

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Publication number
EP2808452B1
EP2808452B1 EP14170710.9A EP14170710A EP2808452B1 EP 2808452 B1 EP2808452 B1 EP 2808452B1 EP 14170710 A EP14170710 A EP 14170710A EP 2808452 B1 EP2808452 B1 EP 2808452B1
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EP
European Patent Office
Prior art keywords
seafloor
equipment
machine
sediments
dredging
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.)
Active
Application number
EP14170710.9A
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German (de)
English (en)
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EP2808452A1 (fr
Inventor
Paolo Giglioli
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.)
ITALIA IMPIANTI Sas di Paolo Giglioli & C
Servizi Ecologici Porto di Genova Srl
Simam SpA
Original Assignee
ITALIA IMPIANTI Sas di Paolo Giglioli & C
Servizi Ecologici Porto di Genova Srl
Simam SpA
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Application filed by ITALIA IMPIANTI Sas di Paolo Giglioli & C, Servizi Ecologici Porto di Genova Srl, Simam SpA filed Critical ITALIA IMPIANTI Sas di Paolo Giglioli & C
Publication of EP2808452A1 publication Critical patent/EP2808452A1/fr
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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
    • E02F3/8858—Submerged units
    • E02F3/8866—Submerged units self propelled

Definitions

  • the present invention mainly relates to a dredging equipment for seafloors having pollutants and/or toxicants.
  • the technical field in which the present invention falls is that of dredging of seafloors of surface water and brackish water basins in which polluted precipitates and pollutants which are toxic and/or harmful to the ecosystem and human health human are found.
  • the first system is aimed at small areas that use a machine with a mechanical jib-boom and bucket excavator, while the second system is aimed to large areas that use large machines equipped with a mechanical jib-boom ending with a rotary cutter and an aspirator connected to the same.
  • the main problem that is encountered consists in lifting the substances present on the seafloor with a consequent diffusion, repositioning of the pollutants and re-pollution of the waters for which the pollutants are deposited also in areas close to that in which the dredging is being carried out.
  • the current dredging systems perform a non-selective dredging, so the pollutants are then spread to wider areas.
  • eco-buckets buckets that once the sediments have been collected, close up to retain the sediments therein.
  • the main object of the present invention is to provide a dredging equipment for seafloors with pollutants and/or toxicants which is free from the above drawback, that is, which prevents the dispersion of pollutants during dredging.
  • a further object of the present invention is to provide a method for dredging the seafloors with pollutants and/or toxicants without a dispersion of pollutants during dredging.
  • a dredging equipment for seafloors with pollutants and/or toxicants is provided as indicated in claim 1.
  • reference numeral 1 indicates a dredging apparatus for a seafloor 2 with pollutants and/or toxicants.
  • Equipment 1 comprises:
  • machine 3 comprises:
  • the sucking device 13 comprises a plurality of pipelines 27 and 28, whose intake port is turned towards seafloor 2.
  • each pipeline 27 and 28 has a first end facing towards seafloor 2 and a second end which channels the sediments collected within a chamber 29 ( figure 8 ) from which means 4 originate, which consist in a pipeline that extends up to the collection center 5.
  • Pipelines 27 and 28 are distributed in an effective manner along the whole area covered by bell 11.
  • first pipelines 27 are close to the lip of bell 11 and a plurality of second pipelines 28 are in the central part of bell 11; the first pipelines 27 being able especially to prevent the dispersion of sediments on the outside of bell 11 and the second pipelines 28 being able to channel the greater part of the sediments towards the collection center 5 through chamber 29 ( figure 8 ) and means 4.
  • the lower ends of pipelines 27 and 28 are provided with respective bars screens 31 ( figure 7 ) able to let through only sediments having pre-established dimensions. In the practice, the bars screens 31 select the type of sediments to be collected according to the dimensions thereof.
  • the sucking device 13 comprises an electric motor 32 for each pipeline 28 which transmits the motion through a belt system 33 to a suction pump 34 installed within each pipeline 28. In this way, it is possible to select which pipelines 28 should suck and the suction power.
  • device 14 comprises a first device for reducing the machine 3 weight before the immersion of machine 3, and a second device for controlling the weight of machine 3, already immersed, for balancing the unbalances taking place during the suction phase.
  • the amount of gas or liquid to be introduced in a plurality of tanks 35 ( figure 4B ) installed inside bell 11 is calculated such as to decrease the weight of the bell on the seafloor while maintaining an overall weight value necessary and sufficient to allow an effective contact of tracks 12 on seafloor 2; the first device therefore consisting of tanks 35.
  • the second device comprises a plurality of tanks 36 ( figure 4B ) which can be filled either with air (via a respective pump 37) to reduce the machine 3 weight or with water (via a respective pump 38) to increase the machine 3 weight.
  • pumps 37 and 38 are equipped with a respective electric motor not shown for simplicity.
  • the electronic unit 8 comprises:
  • the control unit 41 comprises a memory block 45 wherein the various operations carried out are stored area by area and a control block 46 of the various members and devices.
  • the memory block 45 allows storing and comparing the operations carried out at different times in a predetermined area so as to detect the times when polluting sediments are deposited in the same area. In this way it is possible to trace the reasons and the methods of settling of the pollutants.
  • Figure 9 shows a chamber 30 which differs from chamber 40 shown in figure 8 in that it has at least one wall in which a bars screen 49 is formed which allows channeling the water sucked outside.
  • chamber 30 shown in figure 9 can be used only for the seafloors where there are no polluting sediments also due to the fact that they have been sucked in an earlier step.
  • FIGS 1 , 2 and 3 show a crane 50 which supports a mechanical adjustable jib-boom 51 ending with a bucket 52 (commonly called grapple) internal to a bell 53 connected to a suction pipeline 54 which sucks the suspensions of sediments caused by the extraction of the obstacle from the seafloor.
  • this mini-crane is used to remove obstacles on seafloor 2 along the travelling direction.
  • Figure 1 shows an equipment 1 in which an environmental situation is provided with the presence of spaces on the ground, so that the electric power source 6 and the electronic unit 8 are carried by a vehicle 61. Moreover, the collection center 5 is simply a container 62 provided with wheels 63. While figure 2 shows an equipment 1 in which the floating pontoon 64 is the seat of the electric power source 6 of the electronic unit 8 and finally the collection center 5 is fixed.
  • the method of dredging a seafloor 2 with pollutants and/or toxicants includes, once the area to be dredged has been identified:
  • All data are then collected in block 45 so as to define a sheet where the data related to the dredged area are stored to optionally schedule a subsequent intervention and identify the times when the sediments are formed.
  • the machine After the preliminary operations, the machine is deposited on the seafloor and, based on the schedule thereof, it starts sucking in the sediments moving in the area identified with repeated movements so as to dredge by parallel horizontal planes.
  • the sediments collected from the seafloor and channeled to the collection center 5 follow the types identified by the preliminary coring.

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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)
  • Treatment Of Sludge (AREA)
  • Disintegrating Or Milling (AREA)

Claims (9)

  1. Un équipement de dragage (1) pour les fonds marins contenant des polluants et/ou des matières toxiques ; ledit équipement de dragage (1) comprenant :
    - une machine autopropulsée (3) capable de se déplacer sur le fond marin (2) ;
    - des moyens de canalisation (4) des polluants et/ou des matières toxiques retirés du fond marin (2) renvoyant vers un centre de collecte (5) ;
    - une source d'alimentation électrique (6) capable d'alimenter les composants internes de la machine autopropulsée (3) ; et
    - une unité de gestion et de contrôle électronique (8) dudit équipement de dragage (1) ;
    ladite machine autopropulsée (3) comprenant :
    - une cloche sous-marine (11) capable d'être supportée par le fond marin (2) ;
    - un dispositif d'aspiration de sédiments (13) installé à l'intérieur de la cloche sous-marine (11) ; ledit dispositif d'aspiration de sédiments (13) étant raccordé auxdits moyens de canalisation (4) ;
    - un dispositif de réglage du poids (14) de ladite cloche sous-marine (11) immergée dans l'eau ; et
    - un dispositif de déplacement (16) de ladite cloche sous-marine (11) sur du fond marin (2) ;
    caractérisé en ce que ledit dispositif d'aspiration (13) comprend une pluralité de tuyaux (27,28) ayant leur orifice d'admission orienté vers le fond marin (2) ; chaque tuyaux (27,28) ayant une première extrémité tournée vers le fond marin (2) et une seconde extrémité capable de canaliser les sédiments collectés dans une chambre (29) de laquelle les moyens de canalisations (4) proviennent.
  2. Un équipement (1), comme revendiqué dans la revendication 1, caractérisé en ce que les premiers (27) desdits tuyaux sont répartis près de la lèvre de ladite cloche sous-marine (11), et des seconds (28) desdits tuyaux sont dans la partie centrale des cloches sous-marine (11).
  3. Un équipement (1), comme revendiqué dans la revendication 2, caractérisé en ce que l'extrémité inférieure desdits tuyaux (27,28) est équipée avec des grilles (31) capables de laisser passer seulement les sédiments ayant des dimensions préétablies.
  4. Un équipement (1), comme revendiqué dans l'une quelconque des revendications précédentes, caractérisé en ce que le périmètre extérieur de ladite cloche sous-marine (11) est équipé avec une pluralité de lames de protection déformables élastiques (15).
  5. Un équipement (1), comme revendiqué dans l'une quelconque des revendications précédentes, caractérisé en ce qu'il comprend un premier dispositif capable de réduire le poids de la machine (3) avant son immersion dans l'eau, et un second dispositif pour le contrôle du poids de ladite machine (3), déjà immergée, pour compenser les déséquilibres ayant lieu pendant la phase de succion.
  6. Un équipement (1), comme revendiqué dans la revendication 5, caractérisé en ce qu'il comprend une première pluralité de réservoirs (35) et une seconde pluralité de réservoirs (36) pour réduire le poids de la machine (3).
  7. Un équipement (1) comme revendiqué dans l'une quelconque des revendications précédentes, caractérisé en ce qu'il comprend au moins une grue fixée sur la cloche sous-marine (11) ; ladite grue (50) supportant un bras (51) se terminant avec un godet (52) à l'intérieur d'une cloche (53) connectée à un tuyaux d'aspiration (54) qui aspire la suspension de sédiments provoquée par le retrait d'un obstacle du fond marin.
  8. Un équipement (1), comme revendiqué dans l'une quelconque des revendications précédentes, caractérisé en ce que ladite unité électronique (8) comprend une pluralité de capteurs (44) capable de prendre au moins certains des paramètres suivants :
    - l'altitude, le poids et la position de ladite cloche sous-marine (11) ;
    - la direction et la vitesse de ladite cloche sous-marine (11) ;
    - les obstacles près de ladite cloche sous-marine (11) ;
    - la profondeur du fond marin (2) ; et
    - l'inclinaison du fond marin (2).
  9. Une méthode de dragage des fonds marins (2) par un équipement (1) mis en oeuvre selon la revendication 1 à 8 ; méthode caractérisée en ce qu'elle comprend les phases suivantes :
    - une première phase dans laquelle sont déterminées, par des moyens de carottage, l'épaisseur des sédiments à draguer du fond marin (2) et une typologie de sédiments ;
    - une seconde phase dans laquelle sont déterminés le poids de la machine de dragage et la calibration des réservoirs pour la flottaison de ladite machine (3) ;
    - une troisième phase dans laquelle est positionnée de ladite machine de dragage (3) sur le fond marin (2) par une grue ; et
    - une quatrième phase dans laquelle sont déterminées la sucion des sédiments et, durant un telle phase, la régulation du poids de ladite machine (3).
EP14170710.9A 2013-05-30 2014-05-30 Équipement de dragage et procédé pour fonds océaniques ayant des polluants et/ou des substances toxiques Active EP2808452B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT000019A ITRN20130019A1 (it) 2013-05-30 2013-05-30 Apparecchiatura e metodo di dragaggio per fondali su cui sono presenti sostanze inquinanti e/o tossiche

Publications (2)

Publication Number Publication Date
EP2808452A1 EP2808452A1 (fr) 2014-12-03
EP2808452B1 true EP2808452B1 (fr) 2016-07-06

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EP14170710.9A Active EP2808452B1 (fr) 2013-05-30 2014-05-30 Équipement de dragage et procédé pour fonds océaniques ayant des polluants et/ou des substances toxiques

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EP (1) EP2808452B1 (fr)
IT (1) ITRN20130019A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT201900000088A1 (fr) 2017-01-07 2019-01-07
ES2684359B1 (es) * 2017-03-31 2019-07-09 Nodosa S L Equipo sumergido de dragado autonomo
IT202000001489A1 (it) 2020-01-27 2021-07-27 Paolo Giglioli Apparecchiatura di protezione anti-insabbiamento di una struttura in mare
CN114045894B (zh) * 2021-11-16 2023-03-14 深圳技术大学 一种用于水利工程清淤施工的自动化设备

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62146328A (ja) * 1985-12-20 1987-06-30 Nodatsuku Kk 水底清掃車
US6017400A (en) * 1997-05-15 2000-01-25 Orange County Water District Method and system for cleaning a water basin floor
TW201235528A (en) * 2011-02-25 2012-09-01 Chan-Hui Wen Water bottom sediment dredging device
NL2006782C2 (en) * 2011-05-13 2012-11-14 Ihc Holland Ie Bv Dredger provided with a remotely operable dredging vehicle, and method for dredging using such a dredger system.

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ITRN20130019A1 (it) 2014-12-01
EP2808452A1 (fr) 2014-12-03

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