EP2484836A2 - Sperre - Google Patents

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Publication number
EP2484836A2
EP2484836A2 EP12154505A EP12154505A EP2484836A2 EP 2484836 A2 EP2484836 A2 EP 2484836A2 EP 12154505 A EP12154505 A EP 12154505A EP 12154505 A EP12154505 A EP 12154505A EP 2484836 A2 EP2484836 A2 EP 2484836A2
Authority
EP
European Patent Office
Prior art keywords
barrier
barrier sheet
floating
sheet
floating body
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
EP12154505A
Other languages
English (en)
French (fr)
Other versions
EP2484836B1 (de
EP2484836A3 (de
Inventor
Iroy Petrus Cornelis Johannes Rombouts
Petrus Adrianus Rombouts
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.)
Allmex BV
Original Assignee
Allmex BV
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 Allmex BV filed Critical Allmex BV
Publication of EP2484836A2 publication Critical patent/EP2484836A2/de
Publication of EP2484836A3 publication Critical patent/EP2484836A3/de
Application granted granted Critical
Publication of EP2484836B1 publication Critical patent/EP2484836B1/de
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02B—HYDRAULIC ENGINEERING
    • E02B15/00—Cleaning or keeping clear the surface of open water; Apparatus therefor
    • E02B15/04—Devices for cleaning or keeping clear the surface of open water from oil or like floating materials by separating or removing these materials
    • E02B15/08—Devices for reducing the polluted area with or without additional devices for removing the material
    • E02B15/0807—Devices for reducing the polluted area with or without additional devices for removing the material with stabilising elements
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02B—HYDRAULIC ENGINEERING
    • E02B15/00—Cleaning or keeping clear the surface of open water; Apparatus therefor
    • E02B15/04—Devices for cleaning or keeping clear the surface of open water from oil or like floating materials by separating or removing these materials
    • E02B15/08—Devices for reducing the polluted area with or without additional devices for removing the material

Definitions

  • the present invention relates to a barrier for holding back material, such as a liquid, solids and/or objects, floating on a water mass.
  • the invention also relates to the use of such a floating barrier and to a method for holding back material floating on a water mass.
  • Oil barriers In the light of increasingly more stringent environmental requirements, oil barriers have been developed which, in case of calamities, for instance leakage of oil from an oil tanker, can be arranged in a water mass to enable containment of leaked oil floating on the water mass.
  • Oil barriers are for instance known consisting of an elongate screen which floats in the water while being supported by inflatable or solid floating bodies. The screen itself is manufactured from a fabric, for instance canvas or the like.
  • a drawback of the use of such an oil barrier is that the screen at least partially absorbs the oil floating on the water.
  • the screen must therefore be removed from the water immediately after use and then be cleaned or destroyed (i.e. burned in a waste incinerator). Not only does this have an environmental impact, it is moreover also expensive because a new screen must be acquired each time. The situation may further occur that, as a result of absorbing oil, the screen will in the course of time begin to partially release this oil again so that some of the oil will nevertheless find its way back into the environment. The screen cannot therefore remain in the water too long after the calamity.
  • a further drawback of the known oil barriers is that they only function properly in windless weather and/or when there is little swell or current. As soon as the wind speed, current and/or swell increases, the oil screen can no longer function properly. The waves for instance rise above the top side of the oil screen (so that there is overflow or overtopping), this having the result that oil can still pass over the oil screen.
  • Document US 3 807 617 describes an apparatus for arranging an oil barrier in the water.
  • the oil barrier is constructed from an upright flexible partition received in a frame.
  • the frame is provided with a number of arms extending obliquely outward.
  • Floating bodies are attached to the outer ends of these arms.
  • the partition can be rolled onto a reel.
  • the construction of the known oil barrier is however vulnerable and complex, for instance as a result of the presence of the oblique arms and/or because the flexible sheet requires a separate frame for mounting of (the arms of) the floating bodies.
  • the floating bodies can further only be coupled at a single position to the flexible sheet, this position not being optimal under all conditions.
  • a floating barrier for holding back material floating on a water mass, the barrier comprising:
  • the barrier sheet can be held in a relatively upright position in the water mass.
  • the invention is based on the insight, among others, that the stability of the device, and particularly the part protruding above the water surface, is an important factor in good operation of the barrier in severe conditions, such as in the case of strong current, high swell and/or strong wind. According to the invention use is therefore made of a barrier sheet which is held in stable position by the floating bodies. The upper part of the barrier sheet hereby continues to protrude properly above the water surface in substantially all conditions so that it is possible to continue holding back the floating material.
  • the outer ends of a floating body preferably extend substantially symmetrically relative to the front and rear side of the barrier sheet.
  • the floating body essentially protrudes equally far on either side.
  • the buoyancy on the front side is more particularly made substantially the same as the buoyancy on the rear side, so that the barrier sheet is held upright even better in the water mass.
  • a floating body is formed by a single rod-like element of buoyant material.
  • a floating body can be coupled easily to the barrier, for instance by sliding the floating body into a receiving opening of the barrier sheet.
  • the floating body can be constructed integrally.
  • the rod-like body can here have a substantially round or rectangular cross-section (for instance cylindrical or beam-shaped).
  • Such floating bodies are of simple construction and can withstand severe conditions, for instance at sea.
  • the floating body is coupled directly to the barrier sheet.
  • an additional mounting element such as an intermediate frame, can be omitted.
  • the barrier sheet itself is also manufactured from buoyant material.
  • the barrier sheet and the floating body are manufactured from the same or similar material.
  • the barrier sheet and/or the floating bodies are preferably manufactured from plastic, in particular relatively smooth plastic.
  • a particularly advantageous plastic is polyethylene, preferably high-density polyethylene, although the use of low-density polyethylene is also possible.
  • This material is exceptionally smooth, so that it is not or little susceptible to fouling. The material further does not absorb the liquid (oil) floating on the water, or hardly so, so that the usual cleaning step can be omitted after use.
  • a further advantage is that a barrier sheet of polyethylene can be embodied such that the sheet has the desired bending properties. Polyethylene further has a reasonably low specific mass so that it continues to float well on the water surface.
  • a receiving opening is provided in a floating body for receiving the barrier sheet therein. This makes it possible to mutually couple the floating body and the barrier sheet by sliding the barrier sheet through the receiving opening in the floating body.
  • receiving openings are provided in the barrier sheet for receiving respective floating bodies therein. This makes it possible to mutually couple (or uncouple) floating body and barrier sheet by sliding the floating body through said respective receiving openings. When the floating body can be pushed into the opening as one whole in one operation, the floating body can be coupled relatively easily and quickly to the barrier sheet. Uncoupling can take place in reverse manner by sliding the floating body out of the opening.
  • the floating bodies can be permanently coupled to the barrier sheet.
  • the floating bodies are attached releasably (for instance detachably) to the barrier sheet and are for instance only attached to the barrier sheet at location (while travelling).
  • the floating bodies can allow the barrier sheet to float at a slight incline in the water.
  • the floating bodies are however embodied and attached to the barrier sheet such that they hold the barrier sheet in a substantially stable, upright position.
  • the floating bodies are rigidly coupled to the barrier sheet, or can at least be rigidly coupled thereto. This means that a floating body and barrier sheet undergo no or hardly any relative movement, this enhancing the stability of the barrier in the floating situation.
  • the floating bodies can in principle take a random form.
  • the floating bodies take an elongate form. They can extend here on at least one side of the barrier sheet.
  • one or more of the floating bodies extend transversely of both the rear and front sides of the barrier sheet.
  • the longitudinal direction of an elongate floating body extends for instance substantially perpendicularly of both the front and rear sides of the barrier sheet. In the floating situation this can for instance mean that the floating bodies take a horizontal form (relative to a vertical barrier sheet).
  • a particularly stable support of the barrier sheet can be realized in this group of embodiments. It has been found that, when the floating bodies for instance extend on either side relative to the barrier sheet over a lateral distance (a) which is greater than the overall height (h) of the barrier sheet, a stable positioning of the barrier sheet can be realized.
  • receiving openings are provided in the barrier sheet for receiving respective floating bodies therein.
  • An outer end of a floating body can for instance be simply pushed into an opening and secured therein.
  • a floating body is attached out of the centre of the barrier sheet. If the floating body is arranged away from the centre line along the barrier sheet, for instance at some distance below the centre line, the upper edge of the barrier sheet can be placed at a correct position, for instance relatively high in the case the floating body is placed below the centre line, so that the chance of overtopping of the barrier sheet is reduced. In other embodiments a floating body is attached substantially in the centre of the barrier sheet.
  • the elongate floating body can extend substantially parallel to the barrier sheet.
  • the floating body can be in an upright or inclining position here.
  • the elongate floating body extends substantially transversely of the longitudinal direction of the barrier sheet and is thus normally upright in the floating situation. In order to maintain this upright position it may be necessary in determined cases to provide the floating body with a counterweight. In other cases the stability is already sufficient to allow the counterweight to be dispensed with.
  • the floating bodies can be attached in numerous different ways to the barrier sheet.
  • the barrier comprises a number of floating bodies attached alternately to the barrier sheet.
  • the device comprises a number of floating bodies attached on either side of the barrier sheet, while in yet other embodiments the floating bodies are attached on only a single side of the barrier sheet.
  • Each of the embodiments has a specific containing action relative to the current and wind load.
  • the barrier sheet is preferably manufactured from flexible material. This has the advantage, among others, that the barrier sheet can be laid in a random curve (or straight) in the water, for instance in order to enclose a source of pollution or to urge the floating material to a determined area.
  • the flexibility is here such that the barrier sheet can be bent to a radius of curvature (R) of less than (10 *L/2 ⁇ ), wherein L is the overall length of the barrier sheet.
  • the flexible material is suitable for rolling up of the barrier sheet. This makes it possible for instance to transport the barrier sheet rolled up onto a reel and to only unroll it from the reel at location.
  • the floating bodies need only be attached to the barrier sheet during unrolling.
  • the barrier sheet can likewise be rolled up again after use. In these embodiments the barrier thus takes up little space during transport.
  • the floating bodies are usually attached at substantially regular intermediate distances to the barrier sheet. They herein hold the upper edge of the barrier sheet at least 10 cm above the water surface, even in case of high swell.
  • the device further takes such a light form that it can follow the wave motion almost entirely and without delay. This reduces the chance of flow over the barrier sheet.
  • the floating body comprises fixing means for fixing an anchoring to the floating body, for instance in the form of an anchor chain or similar provision.
  • the fixing means can also be adapted for fixing of a partially water-permeable sheet (root barrier) thereto.
  • This sheet can be used to contain not only the material floating on the water, but also the material possibly sinking downward, such as for instance suctioned-up ground material in dredging applications.
  • the sheet is weighted on the underside and the underside rests on the bottom so that an area of the water mass can be fully closed off.
  • the floating bodies are substantially cylindrical. This embodiment is relatively stable and the chance of the floating body freezing is small (the floater depth is less than half the cylinder diameter). Cylindrical floating bodies can further withstand external and/or internal pressure particularly well.
  • the invention also relates to the use of the barrier defined herein.
  • a method for containing material such as a liquid, solids and/or objects floating on a water mass comprising of:
  • Figure 1 shows an embodiment of a barrier 1 according to the invention.
  • Barrier 1 is constructed from an elongate sheet-like barrier sheet 2.
  • Barrier sheet 2 is provided at regular intermediate distances with openings 3.
  • the length (L) of the shown barrier sheet amounts to between 10 and 100 m
  • the height (H) amounts to between 80 cm and 150 cm
  • the thickness amounts to between 0.5 and 3 cm
  • the distance (a) amounts to between 4 and 5 metres.
  • Elongate floating bodies 4 are pushed into openings 3 and subsequently attached to barrier sheet 2. Attaching of floating bodies 4 to barrier sheet 2 can take place in diverse ways, for instance by bolting them fixedly to the barrier sheet. In other embodiments (not specifically shown) there is a simple releasable attachment of floating body 4 to barrier sheet 2 so that the floating bodies can be removed in simple manner from said openings 3 of barrier sheet 2 after use.
  • barrier sheets 2 and floating bodies 4 are manufactured from a lightweight plastic such as polyethylene. This material has such a low specific mass that the whole continues to float well on the water. This material further has no or hardly any impact on the environment.
  • openings 3 are arranged in barrier sheet 3 roughly at the height of the centre line (m) (shown in broken lines in figure 1 ) so that the height of the barrier sheet above floating bodies 4 and the height below floating bodies 4 is roughly equal.
  • the barrier can be arranged in random manner in the water.
  • floating bodies 4 are not arranged at the position of the centre line (m) but slightly above or below it. The height above and below floating bodies 4 can in this way be adapted to the conditions.
  • the length of floating bodies 4 can be varied subject to the desired measure of stability. It has however been found that if length l 1 and l 2 of outer ends 5, 6 of floating bodies 4 is greater than the height (H, see figure 1 ) a reasonably stable barrier can already be obtained.
  • barrier sheets 2 and/or floating bodies 4 are manufactured in an advantageous embodiment from plastic, in particular polypropylene.
  • This material has the property of being relatively smooth. This means that there is little fouling on the device, even if the device lies in the water for a relatively long time. This also means that practically no cleaning of the device need take place after use.
  • a further advantage is that the plastic does not absorb any oil or similar liquid. This is another reason why the device needs no or hardly any cleaning after use.
  • Barrier sheet 2 preferably takes a flexible form so that it can extend in any desired straight or curved position.
  • the barrier sheet 2 takes a flexible form such that it can be carried onto a roll. This makes transport of barrier sheet 2 relatively easy. Only when barrier 1 has to be used, i.e. when the barrier sheet and the floating bodies have been taken to a desired position, is barrier sheet 2 unrolled from the roll and the floating bodies pushed into the above stated openings 3 and then attached to barrier sheet 2. The barrier can likewise be carried onto a roll once again after use, of course after floating bodies 4 have first been removed from said openings.
  • Figures 4 to 8B show a further embodiment of the invention.
  • a number of vertical (instead of horizontal) floating bodies 12 are attached to upright sheet 2.
  • a recess 13 into which barrier sheet 2 can be pushed.
  • the floating body can then be fixed in a manner not shown relative to barrier sheet 2.
  • the floating body protrudes above upper edge 9 of barrier sheet 2.
  • the upper outer end 14 is provided in the shown embodiment with a reflector 15 in order to make it more readily visible.
  • the vertical floating body 12 protrudes below the barrier sheet.
  • a counterweight 17 can be arranged on the underside of the lower outer end 16 so as to ensure that floating body 12 will move as far as possible into upright position.
  • fastening means can be provided for fastening an anchor chain with which the barrier can be anchored to a bottom.
  • an anchor chain with which the barrier can be anchored to a bottom.
  • a flange 18 in which an eye 19 is arranged.
  • An anchor 13 (not shown) can be fastened to this eye.
  • the vertical floating body 12 extends on either side of barrier sheet 2 (the barrier sheet is after all trained through an opening 13 in the centre of the floating body).
  • Floating bodies 12 moreover protrude on both the upper side and underside relative to barrier sheet 2.
  • floating body 2 does not extend on the upper side above barrier wall 2.
  • two floating bodies 12, 12' are arranged, for instance alternately, on different sides of barrier sheet 2.
  • Figures 10A and 10B show the situation in which use is made of both vertical floating bodies 12 and horizontal floating bodies 4. A stable positioning of the barrier sheet in the water can also be realized in this embodiment.
  • the barrier was a vertical sheet with a number of floating bodies attached thereto.
  • the vertical sheet had a length of 9 m, a thickness of 6 mm and a height of 0.25 m.
  • Seven cylindrical floating bodies were attached to the vertical sheet, this in a manner such that the floating bodies protruded an equal distance relative to the vertical sheet on either side.
  • the length of each floating body was 0.25 m on each side.
  • the cross-sectional centre of each of the floating bodies was positioned at a distance of about 75 mm from upper edge 9 of the vertical sheet.
  • the centre-to-centre distance between the floating bodies was about 1.1 m and the diameter of the floating bodies was 75 mm.
  • Both the vertical sheet and the floating bodies were manufactured from polyethylene (in particular HDPE).
  • Figure 11 shows schematically the geometric test setups in which the scale model of the barrier was tested. Four geometric variations were applied:
  • Table 1 shows the results of this test. In this table containment properties are classified as follows: - no or hardly any overflow: GOT - some overflow: EOT, - some overflow (overtopping): OT, - severe overflow (overtopping): ZOT.
  • Table 1 Config Water depth Depth avg. speed Type of wave Wave height Max. wave height Peak wave period Number of waves Stability Over-topping h (m) v (m/s) H s (m)/ H reg (m) H max (m) T r (S) N (-) A 0.75 0.15 None - - - - Stable GOT A 0.75 0.23 None - - - - Stable GOT A 0.75 None Reg.
  • Figure 12 shows an example of an application of an embodiment of the invention for protecting from contamination a harbour in which oil tankers moor.
  • a jetty 20 which is arranged perpendicularly relative to quayside 21 in known manner.
  • the jetty On the underside the jetty is provided with a barrier 24 extending substantially parallel relative to jetty 20.
  • a second barrier 25 is arranged at the free outer end 23 of the jetty. This barrier 25 can be fixed to quayside 21 using fastening 27.
  • Shown on the right in the figure is how a tanker T 1 is wholly enclosed by barrier 24 and flexible barrier 25.
  • Figure 13 shows an embodiment of the invention for use in a river (R) or similar flowing medium.
  • the flow direction of the river is indicated with arrow 29.
  • Two barriers are arranged in the river.
  • the first barrier is arranged substantially transversely of the flow direction of the river and extends from a first riverbank to a position beyond the middle of the river.
  • a second barrier 31 extends in similar manner downstream of first barrier 30.
  • Second barrier 31 is also oriented transversely of the flow direction and extends from the opposite riverbank to a position beyond the middle of the river.
  • the two barriers 30, 31 partially overlap each other, but are so far removed from each other that a course round the barriers remains possible.
  • Waste (a) which may be floating on the water is collected by both the first and the second barrier, wherein the navigability of the river is still maintained.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Removal Of Floating Material (AREA)
  • Cleaning Or Clearing Of The Surface Of Open Water (AREA)
EP12154505.7A 2011-02-08 2012-02-08 Sperre Not-in-force EP2484836B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL2006165 2011-02-08
NL2006831A NL2006831C2 (nl) 2011-02-08 2011-05-23 Keerinrichting.

Publications (3)

Publication Number Publication Date
EP2484836A2 true EP2484836A2 (de) 2012-08-08
EP2484836A3 EP2484836A3 (de) 2014-09-17
EP2484836B1 EP2484836B1 (de) 2017-08-09

Family

ID=45557993

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12154505.7A Not-in-force EP2484836B1 (de) 2011-02-08 2012-02-08 Sperre

Country Status (2)

Country Link
EP (1) EP2484836B1 (de)
NL (1) NL2006831C2 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114481985A (zh) * 2022-03-21 2022-05-13 江苏金山环保科技有限公司 一种蓝藻多级拦截装置

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3807617A (en) 1973-04-25 1974-04-30 Pacific Pollution Control Floating boom deployment apparatus

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR77350E (fr) * 1960-03-15 1962-02-16 Digue flottante légère pour circonscrire et capter les nappes d'hydrocarbures dans les ports
US3922860A (en) * 1974-09-30 1975-12-02 Pacific Pollution Control Floating boom having rotatable float elements
FR2439270A1 (fr) * 1978-10-16 1980-05-16 Inst Francais Du Petrole Barrage flottant souple a haute resistance
DE102004022192A1 (de) * 2004-05-05 2006-01-12 GÖBEL, Gerd Vorgefertigte Vorrichtung zum Eindämmen von ausgelaufenen Flüssigkeiten auf festen Untergründen als auch auf Gewässern

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3807617A (en) 1973-04-25 1974-04-30 Pacific Pollution Control Floating boom deployment apparatus

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114481985A (zh) * 2022-03-21 2022-05-13 江苏金山环保科技有限公司 一种蓝藻多级拦截装置

Also Published As

Publication number Publication date
EP2484836B1 (de) 2017-08-09
NL2006831C2 (nl) 2012-08-09
EP2484836A3 (de) 2014-09-17

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