EP0892116A1 - Saugkopf für einen geschleppten Laderaumsaugbagger und Verfahren zum Baggern mittels dieses Saugkopfes - Google Patents
Saugkopf für einen geschleppten Laderaumsaugbagger und Verfahren zum Baggern mittels dieses Saugkopfes Download PDFInfo
- Publication number
- EP0892116A1 EP0892116A1 EP98870161A EP98870161A EP0892116A1 EP 0892116 A1 EP0892116 A1 EP 0892116A1 EP 98870161 A EP98870161 A EP 98870161A EP 98870161 A EP98870161 A EP 98870161A EP 0892116 A1 EP0892116 A1 EP 0892116A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- drag head
- teeth
- jet pipes
- visor
- series
- 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
Links
Images
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
- E02F3/9256—Active suction heads; Suction heads with cutting elements, i.e. the cutting elements are mounted within the housing of the suction head
- E02F3/9262—Active suction heads; Suction heads with cutting elements, i.e. the cutting elements are mounted within the housing of the suction head with jets
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F5/00—Dredgers or soil-shifting machines for special purposes
- E02F5/02—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
- E02F5/108—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 suction-effect devices
Definitions
- This invention relates to a drag head for a trailing suction hopper dredger which essentially consists of a structure connected to a suction pipe, with a visor rotating around an horizontal axis, in which a series of teeth are applied for breaking up the sand, which are fitted on a toothed beam extending perpendicularly with reference to the direction of motion of the drag head, and a series of jet pipes for injecting water under high pressure, extending parallel to said toothed beam and in front of these teeth, always when considering the direction of motion of the drag head.
- a trailing suction hopper dredger consists of a structure connected to a suction pipe, which is open at the bottom side and is dragged over the ground during dredging.
- the drag head itself consists of two parts: a cap which is directly connected to the suction pipe of the ship, and a visor which is hingingly connected to the cap by means of an horizontal axis.
- a series of teeth 4 are applied on an horizontal beam in order to break up the ground.
- Such a beam is known as a toothed beam.
- a series of wear heel pieces are applied. These form the heel plate. In these wear heel pieces a number of nozzles are provided.
- the sand to be dredged consists of piled up grains. By their own weight, these are pressed onto each other. This pressure is transferred between the grains by the mutual points of support, being the points of contact between the grains.
- this equilibrium has to be disturbed. This may be achieved by using the jets: by feeding water under high pressure, the mutual pressure between the grains may be removed. By this, the force which keeps the grains on each other is removed, causing the grains to start moving. These grains try to reach another state of equilibrium, and this is called the fluidisation of the sand. Now, only this sand has yet to be sucked up, which may be achieved by the underpressure built up in the drag head.
- the jets serve to loosen up the sand and that the suction force of the dredging pump serves for the transport of the loosened up sand.
- Trailing hoppers which correspond to the above given description are known.
- At least one second series of jet pipes is provided behind the above said teeth.
- the above said second series of jet pipes is subdivided in jet pipes directed at the inside of the visor, more particularly at above said teeth, and in jet pipes which are directed vertically or substantially vertically downwards.
- Figure 1 is a schematic side view of the dredge head according to the invention.
- Figure 2 is, at a bigger scale, a perspective representation of the dredge head according to the invention.
- Figure 3 schematically illustrates the operational depth of a drag head of the known type.
- Figure 4 in the same way illustrates the possible operational depth of a drag head according to the invention.
- the drag head for a trailing suction hopper dredger according to the invention is moved over the bottom in the direction of arrow P which is shown in figure 1.
- the drag head according to the invention is found at the end of a suction pipe 1 which is equipped with a visor 2 consisting a.o. of side walls 3, a back wall 3', a top plate 4 with an arc-shaped section 5, which upon rotation of the visor 2 around its axis 6 remains in close contact with the sealing strip 7 belonging to the fixed parts which are fitted to the suction pipe.
- a visor 2 consisting a.o. of side walls 3, a back wall 3', a top plate 4 with an arc-shaped section 5, which upon rotation of the visor 2 around its axis 6 remains in close contact with the sealing strip 7 belonging to the fixed parts which are fitted to the suction pipe.
- a second series of jet pipes is now provided. These jet pipes are subdivided into a first series of jet pipes 12 which are directed towards the teeth 10, and a second series of jet pipes 12' which are directed vertically or substantially vertically downwards.
- the jets injected through jet pipes 12 are directed towards the inside of the visor.
- the jet pipes 12' are aimed at fluidising the bottom better, i.e. deeper at the height of the back wall 3'.
- the different jet pipes 12, 12' immediately link up with a water valve 11 which may be moved, and this according to a translation which occurs in a plane that runs parallel to the back wall 3' of the visor.
- This water valve 11 is designed in the shape of a water chamber 13. In case of hydraulic operation, this is carried out from the bridge of the trailing suction hopper dredger.
- the fitting of the water valve which is adjustable in the height direction, increases the efficiency of the new drag head, because the water gap may be optimally adjusted as a function of the soil conditions and totally independent from the penetration of the bottom by the visor.
- the efficiency of the trailing suction hopper dredger is further increased by applying at the bottom of the side walls 3 of the visor, one or a series of several lateral knife-shaped wear strips 14. These wear strips are sufficiently thin to penetrate into the sand in order to realise the desired sealing, so that the ratio sand/water of the sucked off mixture is further optimised.
- the drag head In order to prevent feed water from being fed along the relatively unproductive sides of the visor, the drag head has to be well sealed at these sites.
- the side walls of the visor should well penetrate into the bottom.
- the visor By the presence of thinly walled wear strips 14, the visor is laterally perfectly sealed, so that the required transport water is integrally sucked up at the back through the water gap and the agitated soil.
- This new layout forms a second important feature of the invention.
- a further improvement of the drag head should be seen in the presence at the back side of the drag head of the feet 15 hinging with respect to the visor, the useful surface of which, i.e. the base 15', is sufficiently great to guarantee a fixed support on the bottom.
- the depth of the feet 15, which are mutually connected by a plate 17 (figure 2) By regulating the depth of the feet 15, which are mutually connected by a plate 17 (figure 2), the penetration of the visor and thus of the teeth into the soil is regulated. This allows to regulate the cutting thickness of the teeth and this independently from the water gap.
- feet 15, with their widened bases 15' are rotatably fitted around hinge point 18. The rotation is effectuated by the action of the hydraulic cylinder 16, with hinge point 18 with respect to the feet 15 and hinge point 19 with respect to the visor.
- the visor itself is lifted or lowered by the action of hydraulic cylinder 20.
- the cylinder 20 is rigidly fastened with respect to the suction pipe 1 and is in 21 hingingly connected to fixed parts belonging to the structure of the visor, in order to lift or lower the back wall 3' thereof.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Jet Pumps And Other Pumps (AREA)
- Earth Drilling (AREA)
- Nozzles (AREA)
- Manipulator (AREA)
- Underground Or Underwater Handling Of Building Materials (AREA)
- Devices For Post-Treatments, Processing, Supply, Discharge, And Other Processes (AREA)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
- Chemical And Physical Treatments For Wood And The Like (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
- Sheets, Magazines, And Separation Thereof (AREA)
- Coating Apparatus (AREA)
- Hydraulic Turbines (AREA)
- Casting Devices For Molds (AREA)
- Soil Working Implements (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
- Shovels (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP05016382A EP1609916B1 (de) | 1997-07-17 | 1998-07-17 | Saugkopf für einen geschleppten Laderaumsaugbagger und Verfahren zum Baggern mittels dieses Saugkopfes |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BE9700625A BE1011285A3 (nl) | 1997-07-17 | 1997-07-17 | Sleepkop voor een sleephopperzuiger en werkwijze voor het baggeren met behulp van deze sleepkop. |
BE9700625 | 1997-07-17 |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP05016382A Division EP1609916B1 (de) | 1997-07-17 | 1998-07-17 | Saugkopf für einen geschleppten Laderaumsaugbagger und Verfahren zum Baggern mittels dieses Saugkopfes |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0892116A1 true EP0892116A1 (de) | 1999-01-20 |
EP0892116B1 EP0892116B1 (de) | 2006-01-18 |
Family
ID=3890649
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98870161A Expired - Lifetime EP0892116B1 (de) | 1997-07-17 | 1998-07-17 | Saugkopf für einen geschleppten Laderaumsaugbagger und Verfahren zum Baggern mittels dieses Saugkopfes |
EP05016382A Expired - Lifetime EP1609916B1 (de) | 1997-07-17 | 1998-07-17 | Saugkopf für einen geschleppten Laderaumsaugbagger und Verfahren zum Baggern mittels dieses Saugkopfes |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP05016382A Expired - Lifetime EP1609916B1 (de) | 1997-07-17 | 1998-07-17 | Saugkopf für einen geschleppten Laderaumsaugbagger und Verfahren zum Baggern mittels dieses Saugkopfes |
Country Status (9)
Country | Link |
---|---|
EP (2) | EP0892116B1 (de) |
AT (1) | ATE415524T1 (de) |
BE (1) | BE1011285A3 (de) |
CY (1) | CY1110897T1 (de) |
DE (2) | DE69833248T2 (de) |
DK (2) | DK1609916T3 (de) |
ES (2) | ES2256926T3 (de) |
HK (1) | HK1090398A1 (de) |
PT (2) | PT892116E (de) |
Cited By (26)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19960361A1 (de) * | 1999-12-14 | 2001-06-21 | Krupp Foerdertechnik Gmbh | Schleppkopf für Saugbagger |
NL1020521C2 (nl) * | 2002-05-02 | 2003-11-04 | Bos & Kalis Baggermaatsch | Sleepzuiger en sleepkop daarvoor. |
BE1015911A3 (nl) * | 2004-02-19 | 2005-11-08 | Dredeco Pty Ltd | Sleepkop en hopperzuiger. |
BE1016085A5 (nl) * | 2004-06-23 | 2006-02-07 | Dredging Int | Sleepkop voor een sleephopperzuiger en werkwijze voor het baggeren met behulp van deze sleepkop. |
EP1653010A1 (de) * | 2004-10-26 | 2006-05-03 | Ihc Holland N.V. | Unterwasser-Saugbagger-Verfahren und Vorrichtung dafür |
WO2009068412A1 (en) * | 2007-11-29 | 2009-06-04 | Dredging International | Drag head of a trailing suction hopper dredger and method for dredging using this drag head |
WO2010066757A1 (en) * | 2008-12-12 | 2010-06-17 | Dredging International N.V. | Drag head for a trailing suction hopper dredger and method for dredging using this drag head |
WO2010079193A1 (en) | 2009-01-10 | 2010-07-15 | Dredging International N.V. | Excavating device for excavating ground under water, and method for excavating ground |
WO2012104314A1 (en) * | 2011-02-02 | 2012-08-09 | Baggerwerken Decloedt En Zoon | Suction head for a dredging vessel and method for dredging using said suction head |
WO2013108131A1 (en) | 2012-01-16 | 2013-07-25 | Baggerwerken Decloedt En Zoon | Suction head for a dredging vessel and the related method |
BE1020438A4 (nl) * | 2012-05-21 | 2013-10-01 | Baggerwerken Decloedt En Zoon | Zuigkop voor een baggerschip en werkwijze voor het baggeren met behulp van deze zuigkop. |
WO2013174932A1 (en) | 2012-05-25 | 2013-11-28 | Baggerwerken Decloedt En Zoon | Dredging head of a trailing hopper dredger and method for dredging by means of said dredging head |
NL2011961C2 (en) * | 2013-12-13 | 2015-06-16 | Ihc Holland Ie Bv | Modular visor for a drag head. |
CN104818739A (zh) * | 2015-05-05 | 2015-08-05 | 明光市留香泵业有限公司 | 海底吸沙作业专用抽吸盾头 |
BE1022377B1 (nl) * | 2015-02-18 | 2016-03-18 | Baggerwerken Decloedt En Zoon N.V. | Zuigkop van een baggerschip en werkwijze voor het baggeren met behulp van deze zuigkop |
CN106193157A (zh) * | 2016-08-31 | 2016-12-07 | 中交烟台环保疏浚有限公司 | 耙吸挖泥船用耙头 |
CN106836342A (zh) * | 2017-01-24 | 2017-06-13 | 黄河水利委员会黄河水利科学研究院 | 一种破土射流冲吸式吸泥头 |
CN108265767A (zh) * | 2018-04-04 | 2018-07-10 | 长江南京航道工程局 | 挖泥船破碎耙头装置 |
CN108331060A (zh) * | 2018-04-04 | 2018-07-27 | 长江南京航道工程局 | 挖泥船水刀耙头装置 |
CN108396807A (zh) * | 2018-04-04 | 2018-08-14 | 长江南京航道工程局 | 挖泥船水翼耙头装置 |
CN108824532A (zh) * | 2018-07-05 | 2018-11-16 | 长江南京航道工程局 | 一种自动调节转动角的自航耙吸式挖泥船耙头 |
WO2018236213A2 (en) | 2017-06-22 | 2018-12-27 | Baggermaatschappij Boskalis B.V. | REAR SUCTION HOPPER DRAGUE WITH EFFLUENT RECYCLING SYSTEM AND SUCTION DRAWING METHOD |
CN109629622A (zh) * | 2019-01-10 | 2019-04-16 | 中交上海航道局有限公司 | 一种耙吸式挖泥船耙头 |
CN109914505A (zh) * | 2019-04-12 | 2019-06-21 | 中交天航滨海环保浚航工程有限公司 | 带有可拆卸格栅的耙吸挖泥船耙头结构 |
CN113638457A (zh) * | 2021-07-28 | 2021-11-12 | 唐丽铭 | 一种耙吸式挖泥船用耙头 |
CN114658053A (zh) * | 2022-03-28 | 2022-06-24 | 中港疏浚有限公司 | 一种智能可调式挖泥耙头 |
Families Citing this family (9)
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CN102330443A (zh) * | 2011-07-14 | 2012-01-25 | 中交天津港航勘察设计研究院有限公司 | 一种耙吸挖泥船用粘土耙头 |
CN103195119A (zh) * | 2013-03-29 | 2013-07-10 | 武汉武船海洋工程船舶设计有限公司 | 一种小型主动耙头 |
CN106677240A (zh) * | 2016-11-22 | 2017-05-17 | 中交疏浚技术装备国家工程研究中心有限公司 | 一种用于疏浚饱和密实粉细砂与粉土的方法 |
CN107165216A (zh) * | 2017-07-18 | 2017-09-15 | 中港疏浚有限公司 | 高压冲水耙头 |
CN110056031A (zh) * | 2019-03-05 | 2019-07-26 | 中船第九设计研究院工程有限公司 | 一种耙吸挖泥船高压冲水系统 |
CN111395433B (zh) * | 2020-04-20 | 2022-04-26 | 中交疏浚技术装备国家工程研究中心有限公司 | 新型一体式高效耙头 |
CN111395434B (zh) * | 2020-04-20 | 2022-03-18 | 中交疏浚技术装备国家工程研究中心有限公司 | 耙吸挖泥船 |
CN111472405B (zh) * | 2020-05-11 | 2020-11-24 | 日照市东港区水务集团有限公司 | 一种用于河床底部清理淤泥的机头 |
CN112575836A (zh) * | 2020-12-03 | 2021-03-30 | 浙江理工大学 | 空化射流淤泥清理装置 |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1312032A (en) * | 1970-01-19 | 1973-04-04 | Koninkl Mij Tot Het Uitvoeren | Hopper suction dredges |
EP0075358A1 (de) * | 1981-09-17 | 1983-03-30 | Ihc Holland N.V. | Verfahren zum Aufsaugen von Boden oder Schlamm mittels eines Saugbaggers mit Laderaum und ein Saugbagger zur Ausführung des Verfahrens |
JPS6055133A (ja) * | 1983-09-02 | 1985-03-30 | Kokusai Denshin Denwa Co Ltd <Kdd> | 水底溝掘削機 |
EP0142881A1 (de) * | 1983-10-28 | 1985-05-29 | Ihc Holland N.V. | Vorrichtung zum auswechselbaren Befestigen eines Saugkopfes an eine Saugleitung |
DE3817213C1 (en) * | 1988-05-20 | 1989-01-12 | Peter 2244 Suederdeich De Pautz | Hydraulic harrow |
EP0668406A1 (de) * | 1994-02-21 | 1995-08-23 | Krupp Fördertechnik GmbH | Verfahren und Vorrichtung zum Absaugen von Gewässergrund |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB355005A (en) * | 1930-08-06 | 1931-08-20 | John Reid | Improvements in suction dredge heads |
CA1142692A (en) | 1978-02-24 | 1983-03-08 | Union Carbide Corporation | Orthopedic devices, materials and methods |
SU1573101A1 (ru) * | 1987-12-01 | 1990-06-23 | Предприятие П/Я В-2522 | Волочащийс грунтоприемник землесосного снар да |
DE3810932A1 (de) * | 1988-03-31 | 1989-10-19 | Alexander Muehlstaedter | Saugbagger-mundstueck |
DE4226492A1 (de) * | 1991-12-24 | 1993-07-01 | Muesing Anton Gmbh Co Kg | Verfahren und vorrichtung zum vergroessern der wassertiefe eines gewaessers |
AU6828794A (en) * | 1993-05-03 | 1994-11-21 | Bruce L. Bruso | Method and apparatus for in situ soil remediation |
-
1997
- 1997-07-17 BE BE9700625A patent/BE1011285A3/nl not_active IP Right Cessation
-
1998
- 1998-07-17 DK DK05016382T patent/DK1609916T3/da active
- 1998-07-17 AT AT05016382T patent/ATE415524T1/de not_active IP Right Cessation
- 1998-07-17 ES ES98870161T patent/ES2256926T3/es not_active Expired - Lifetime
- 1998-07-17 ES ES05016382T patent/ES2319781T3/es not_active Expired - Lifetime
- 1998-07-17 PT PT98870161T patent/PT892116E/pt unknown
- 1998-07-17 DK DK98870161T patent/DK0892116T3/da active
- 1998-07-17 EP EP98870161A patent/EP0892116B1/de not_active Expired - Lifetime
- 1998-07-17 PT PT05016382T patent/PT1609916E/pt unknown
- 1998-07-17 DE DE69833248T patent/DE69833248T2/de not_active Expired - Lifetime
- 1998-07-17 EP EP05016382A patent/EP1609916B1/de not_active Expired - Lifetime
- 1998-07-17 DE DE69840281T patent/DE69840281D1/de not_active Expired - Lifetime
-
2006
- 2006-06-23 HK HK06107169.4A patent/HK1090398A1/xx not_active IP Right Cessation
-
2009
- 2009-02-19 CY CY20091100199T patent/CY1110897T1/el unknown
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
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GB1312032A (en) * | 1970-01-19 | 1973-04-04 | Koninkl Mij Tot Het Uitvoeren | Hopper suction dredges |
EP0075358A1 (de) * | 1981-09-17 | 1983-03-30 | Ihc Holland N.V. | Verfahren zum Aufsaugen von Boden oder Schlamm mittels eines Saugbaggers mit Laderaum und ein Saugbagger zur Ausführung des Verfahrens |
JPS6055133A (ja) * | 1983-09-02 | 1985-03-30 | Kokusai Denshin Denwa Co Ltd <Kdd> | 水底溝掘削機 |
EP0142881A1 (de) * | 1983-10-28 | 1985-05-29 | Ihc Holland N.V. | Vorrichtung zum auswechselbaren Befestigen eines Saugkopfes an eine Saugleitung |
DE3817213C1 (en) * | 1988-05-20 | 1989-01-12 | Peter 2244 Suederdeich De Pautz | Hydraulic harrow |
EP0668406A1 (de) * | 1994-02-21 | 1995-08-23 | Krupp Fördertechnik GmbH | Verfahren und Vorrichtung zum Absaugen von Gewässergrund |
Non-Patent Citations (1)
Title |
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PATENT ABSTRACTS OF JAPAN vol. 009, no. 191 (M - 402) 7 August 1985 (1985-08-07) * |
Cited By (42)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19960361A1 (de) * | 1999-12-14 | 2001-06-21 | Krupp Foerdertechnik Gmbh | Schleppkopf für Saugbagger |
NL1020521C2 (nl) * | 2002-05-02 | 2003-11-04 | Bos & Kalis Baggermaatsch | Sleepzuiger en sleepkop daarvoor. |
BE1015911A3 (nl) * | 2004-02-19 | 2005-11-08 | Dredeco Pty Ltd | Sleepkop en hopperzuiger. |
BE1016085A5 (nl) * | 2004-06-23 | 2006-02-07 | Dredging Int | Sleepkop voor een sleephopperzuiger en werkwijze voor het baggeren met behulp van deze sleepkop. |
CN1766241B (zh) * | 2004-10-26 | 2011-09-14 | Ihc荷兰公司 | 实施水下挖泥作业的方法和挖泥设备 |
EP1653010A1 (de) * | 2004-10-26 | 2006-05-03 | Ihc Holland N.V. | Unterwasser-Saugbagger-Verfahren und Vorrichtung dafür |
AU2008328990B2 (en) * | 2007-11-29 | 2015-03-26 | Dredging International | Drag head of a trailing suction hopper dredger and method for dredging using this drag head |
WO2009068412A1 (en) * | 2007-11-29 | 2009-06-04 | Dredging International | Drag head of a trailing suction hopper dredger and method for dredging using this drag head |
JP2011504975A (ja) * | 2007-11-29 | 2011-02-17 | ドレッジング・インターナショナル・ナムローゼ・フエンノートシャップ | トレーリングサクションホッパー浚渫船のドラッグヘッド、および当該ドラッグヘッドを用いて浚渫する方法 |
BE1017861A3 (nl) * | 2007-11-29 | 2009-09-01 | Dredging Int | Sleepkop van een sleephopperzuiger en werkwijze voor het baggeren met behulp van deze sleepkop. |
US8286375B2 (en) | 2007-11-29 | 2012-10-16 | Dredging International N.V. | Drag head of a trailing suction hopper dredger and method for dredging using this drag head |
BE1018378A3 (nl) * | 2008-12-12 | 2010-09-07 | Dredging Int | Sleepkop voor een sleephopperzuiger en werkwijze voor het baggeren met behulp van deze sleepkop. |
JP2012511644A (ja) * | 2008-12-12 | 2012-05-24 | ドレッジング・インターナショナル・ナムローゼ・フエンノートシャップ | トレーリング吸引ホッパー浚渫船用のドラッグヘッド、および当該ドラッグヘッドを用いて浚渫する方法 |
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Also Published As
Publication number | Publication date |
---|---|
EP1609916A2 (de) | 2005-12-28 |
BE1011285A3 (nl) | 1999-07-06 |
PT892116E (pt) | 2006-06-30 |
CY1110897T1 (el) | 2015-06-10 |
DE69840281D1 (de) | 2009-01-08 |
PT1609916E (pt) | 2009-03-05 |
DE69833248T2 (de) | 2006-11-02 |
ES2319781T3 (es) | 2009-05-12 |
EP0892116B1 (de) | 2006-01-18 |
ATE415524T1 (de) | 2008-12-15 |
ES2256926T3 (es) | 2006-07-16 |
EP1609916A3 (de) | 2006-04-05 |
EP1609916B1 (de) | 2008-11-26 |
DE69833248D1 (de) | 2006-04-06 |
HK1090398A1 (en) | 2006-12-22 |
DK0892116T3 (da) | 2006-05-22 |
DK1609916T3 (da) | 2009-03-16 |
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