EP0668211A1 - Fall pipe - Google Patents

Fall pipe Download PDF

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Publication number
EP0668211A1
EP0668211A1 EP95200266A EP95200266A EP0668211A1 EP 0668211 A1 EP0668211 A1 EP 0668211A1 EP 95200266 A EP95200266 A EP 95200266A EP 95200266 A EP95200266 A EP 95200266A EP 0668211 A1 EP0668211 A1 EP 0668211A1
Authority
EP
European Patent Office
Prior art keywords
fall pipe
elements
pipe according
flange
tubular element
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
EP95200266A
Other languages
German (de)
French (fr)
Other versions
EP0668211B1 (en
Inventor
Marcel Van Laer
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.)
Tideway BV
Original Assignee
Dredging International NV
Roda Shipping Ltd
Tideway 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 Dredging International NV, Roda Shipping Ltd, Tideway BV filed Critical Dredging International NV
Publication of EP0668211A1 publication Critical patent/EP0668211A1/en
Application granted granted Critical
Publication of EP0668211B1 publication Critical patent/EP0668211B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B63SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63BSHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B35/00Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for
    • B63B35/28Barges or lighters
    • B63B35/30Barges or lighters self-discharging
    • B63B35/305Barges or lighters self-discharging discharging by mechanical means
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B63SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63BSHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B27/00Arrangement of ship-based loading or unloading equipment for cargo or passengers
    • B63B27/28Arrangement of ship-based loading or unloading equipment for cargo or passengers of chutes

Definitions

  • This invention concerns a fall pipe for dumping materials, in particular but not exclusively stones, onto a bottom situated under water.
  • Light-weight fall pipes with a specific weight as mentioned hereinabove are difficult to reinforce when they reach large lengths.
  • the invention has therefore as object to provide a new and original fall pipe, offering simultaneously the required strength and flexibility so that the stones can be dumped under good circumstances at the required place onto the bottom and at the desired depth.
  • the fall pipe according to the invention is mainly composed of a series of tubular elements piled up onto one another and supported by at least two cables, which elements are arranged at both ends to fit against a corresponding end of an adjacent tubular element of said series, and comprise at both ends a flange defining together with a flange of said adjacent tubular element an annular space wherein at least one resilient sealing ring is applied between said flanges.
  • the sealing ring or rings between both flanges provide for a waterproof sealing between two successive tubular elements so that there is no uncontrolled water inflow in the fall pipe. Such an inflow can now, if desired, occur in a controllable way at the top of the fall pipe. Of course, in this way no fine material can further escape between two successive elements in the fall pipe according to the invention.
  • the fall pipe according to the invention further also allows a limited flexion, which is required to permit the outlet of the fall pipe to be positioned correctly.
  • said flanges are provided with at least one raised edge directed towards the adjacent tubular element, with said raised edges of the flanges which are situated at two ends fitting against one another, sliding fittingly into one another.
  • the invention further relates to a tubular element for constructing a fall pipe according to the invention and which shows more particularly the characteristics as indicated in claim 12.
  • the fall pipe shown in these figures is composed of a series of tubular, more particularly cylindrical elements 1 piled up onto one another and supported by two or possibly more cables 2. Both ends of the cylindrical elements 1 are arranged to fit against a corresponding end of an adjacent cylindrical element 1'.
  • Each cylindrical element 1 shows at its two ends a outwardly directed flange.
  • these flanges are represented as upper flange 3 and lower flange 4.
  • a resilient seal which consists in the here represented example of three rubber rings 6 which are mutually separated by steel rings 7 having a rectangular cross section.
  • the middle rubber ring 6 is caught between two steel rings 7 while the upper and the lower rubber rings 6 are each caught between a steel ring 7 and a portion of the flanges 3, respectively 4.
  • the steel rings 7 show a rectangular cross section so that the rubber rings 6 remain always in contact with the large flat side of these steel rings 7.
  • the flanges 3, 4 of a cylindrical element 1, l' are provided with a raised edge 8, 9 directed towards the adjacent cylindrical element 1' and 1 respectively, and sliding fittingly into one another. Due to these edges 8, 9, it is easy to position the cylindrical elements 1, l' correctly with respect to one another and a mutual displacement of these elements 1, 1' is further avoided.
  • the edges 8, 9 do not necessarily have to extend over the entire circumference of the elements 1, 1'.
  • the different cylindrical elements 1 composing this fall pipe can each form two by two an angle, as shown by Figure 1.
  • the rubber rings 6 On one side the rubber rings 6 will be compressed (at the left in Figure 1) and on the opposite side (at the right in the same figure) they will be released.
  • At least one of the raised edges 8, 9 sliding fittingly into one another shows a bevelled contact surface with the other raised edge.
  • Such bevelled contact surfaces makes sliding these edges into one another further easier.
  • the upper flanges 3 are locally supported by knee pieces 20.
  • the entire fall pipe structure is thus formed by different cylindrical elements 1, 1'. These elements are caught over the entire length of the fall pipe between two cables 2, which are more particularly fixed to the lowermost element of the fall pipe. As a result of the own weight of the different elements, these elements lie onto one another so that heavy connections between the different elements are not required.
  • each of the flanges 3 and 4 show a notch 10 at the passage of the cables 2.
  • the cables 2 are fixed in the notches 10 of the flanges 3 and 4 by making use of locking plates 11 ( Figures 2, 4, 5 and 6).
  • the locking plates 11 show an inner rounding 12 having a radius adapted to the diameter of the cables 2.
  • the locking plates 11 are provided with pins 13 which are applied in holes 14 provided in the upper flanges 3 for fixing these plates 11 onto the upper flanges 3. In this way, applying such a locking plate 11 can be done easily and quickly, after the cable 2 has been pushed in the notch 10.
  • the pins 13 are automatically blocked in the holes 14 by applying a further cylindrical element 1.
  • the locking plate 11 is more particularly blocked by the raised edge 8 of the lower flange 4 of the upper element 1.
  • the shape of this raised edge 8 in the area of the locking plate 11 is adapted to the shape of this plate 11.
  • All of the cylindrical elements 1, 1' are internally provided with a protective layer 15.
  • This layer may consist of natural or synthetic rubber or a technically equivalent material.
  • the thickness of the protective layer is nearly twice the thickness of the wall of the steel cylindrical elements 1, 1'.
  • the resilient lining layer 15 protrudes out of the cylindrical element 1 and fits resiliently against the corresponding lining layer of an adjacent element 1' whereby a bulge may be formed locally. In this way, a good connection is obtained between both elements 1, 1'.
  • the lowermost end of the fall pipe is shown in Figure 7, which end is more particularly provided with a so-called "remote operated vehicle".
  • This remote controllable unit comprises a central shute which is mounted telescopically with respect to the lowermost elements of the fall pipe.
  • the cables 17 By means of the cables 17, the heaving movements of the ship can be compensated for in such a manner that the device is situated at a constant distance from the bottom.
  • folding supporting arms 18 On the unit are provided folding supporting arms 18 for all kinds of sensors and/or cameras.
  • thrusters are provided on the unit, as already known per se.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Transportation (AREA)
  • Laying Of Electric Cables Or Lines Outside (AREA)

Abstract

The invention concerns a fall pipe for dumping materials onto a bottom situated under water, characterised in that it is mainly composed of a series of tubular elements (1) supported by at least two cables, which elements (1) are provided at both ends with a flange (3, 4) defining together with a flange (4, 3) of an adjacent tubular element (1') an annular space (5) wherein at least one resilient sealing ring (6) is applied between said flanges (3, 4).

Description

  • This invention concerns a fall pipe for dumping materials, in particular but not exclusively stones, onto a bottom situated under water.
  • It is known to equip ships with a fall pipe and different structures have been suggested therefor. Dumping quarry stones at high depths (300 to 600 m) onto the seabottom is done regularly nowadays. The problems which arise upon dumping stones and similar materials at such depths and after all also at relatively small depths are i.a. the consequences of currents, movements of the ship upon violent wind etc.
  • It has already been proposed to construct a fall pipe to be used for this object with water permeable elements, i.a. by using a steel network. Examples thereof are described in the following patents or published applications : NL 7904516 and NL 188938.
  • Possibly, it could also be considered to use slightly conical elements sliding into one another for constructing the fall pipe. Finally, it has also been proposed to use a fall pipe consisting of elements having a specific weight equal to or less than that of the water. In this respect see Norwegian application 773352.
  • All of these structures offer only partially a solution to the set requirements. Steel networks are easily damaged by the falling material and smaller material can be lost through these networks.
  • The use of elements sliding into one another does not offer the desired solution either, i.a. namely since an uncontrolled water inflow in the fall pipe occurs between these elements.
  • Light-weight fall pipes with a specific weight as mentioned hereinabove are difficult to reinforce when they reach large lengths.
  • The invention has therefore as object to provide a new and original fall pipe, offering simultaneously the required strength and flexibility so that the stones can be dumped under good circumstances at the required place onto the bottom and at the desired depth.
  • In order to enable this in conformity with the invention, the fall pipe according to the invention is mainly composed of a series of tubular elements piled up onto one another and supported by at least two cables, which elements are arranged at both ends to fit against a corresponding end of an adjacent tubular element of said series, and comprise at both ends a flange defining together with a flange of said adjacent tubular element an annular space wherein at least one resilient sealing ring is applied between said flanges.
  • The sealing ring or rings between both flanges provide for a waterproof sealing between two successive tubular elements so that there is no uncontrolled water inflow in the fall pipe. Such an inflow can now, if desired, occur in a controllable way at the top of the fall pipe. Of course, in this way no fine material can further escape between two successive elements in the fall pipe according to the invention. The fall pipe according to the invention further also allows a limited flexion, which is required to permit the outlet of the fall pipe to be positioned correctly.
  • Still according to the invention, said flanges are provided with at least one raised edge directed towards the adjacent tubular element, with said raised edges of the flanges which are situated at two ends fitting against one another, sliding fittingly into one another.
  • These raised edges permit the different elements of the fall pipe to be put quickly and easily accurately onto one another and prevent these elements from displacing laterally with respect to each other.
  • The invention further relates to a tubular element for constructing a fall pipe according to the invention and which shows more particularly the characteristics as indicated in claim 12.
  • Other details and advantages of the invention will become apparent from the following description of a fall pipe according to the invention. This description is only given by way of example and does not limit the invention. The reference numerals relate to the figures annexed hereto.
    • Figure 1 is a longitudinal section in the area of the connection between two tubular elements.
    • Figure 2 is a perspective view, on a smaller scale, of two elements and two cables pertaining thereto.
    • Figure 3 is a top view, on a larger scale, of a tubular element.
    • Figure 4 is a section according to line IV-IV in Figure 5 and shows a locking plate in top view.
    • Figure 5 is a section according to line V-V in Figure 4.
    • Figure 6 is a section according to line VI-VI in Figure 4.
    • Figure 7 shows schematically the lower end of the fall pipe.
  • The fall pipe shown in these figures, is composed of a series of tubular, more particularly cylindrical elements 1 piled up onto one another and supported by two or possibly more cables 2. Both ends of the cylindrical elements 1 are arranged to fit against a corresponding end of an adjacent cylindrical element 1'.
  • Each cylindrical element 1 shows at its two ends a outwardly directed flange. For the clarity of the description and supposing that the drawings show the fall pipe in vertical position, these flanges are represented as upper flange 3 and lower flange 4.
  • In the annular space 5 which is defined by the flanges 3 and 4 of two adjacent elements 1, 1', a resilient seal is provided which consists in the here represented example of three rubber rings 6 which are mutually separated by steel rings 7 having a rectangular cross section. As a result thereof, the middle rubber ring 6 is caught between two steel rings 7 while the upper and the lower rubber rings 6 are each caught between a steel ring 7 and a portion of the flanges 3, respectively 4.
  • The steel rings 7 show a rectangular cross section so that the rubber rings 6 remain always in contact with the large flat side of these steel rings 7.
  • In the preferred embodiment shown in the figures, the flanges 3, 4 of a cylindrical element 1, l' are provided with a raised edge 8, 9 directed towards the adjacent cylindrical element 1' and 1 respectively, and sliding fittingly into one another. Due to these edges 8, 9, it is easy to position the cylindrical elements 1, l' correctly with respect to one another and a mutual displacement of these elements 1, 1' is further avoided. The edges 8, 9 do not necessarily have to extend over the entire circumference of the elements 1, 1'.
  • When the fall pipe is flexed locally or over its entire length, the different cylindrical elements 1 composing this fall pipe can each form two by two an angle, as shown by Figure 1. On one side the rubber rings 6 will be compressed (at the left in Figure 1) and on the opposite side (at the right in the same figure) they will be released.
  • In order to permit the different cylindrical elements 1 to move in this way with respect to one another, at least one of the raised edges 8, 9 sliding fittingly into one another shows a bevelled contact surface with the other raised edge. Such bevelled contact surfaces makes sliding these edges into one another further easier.
  • Due to the bevelled contact surfaces, the cylindrical elements (1, 1') will not be clamped at their flanges 3 and 4 upon flexion of the fall pipe as represented in Figure 1. Although according to Figure 1, the inner surface of the raised edge 9 of the upper flange 3 of an element 1' which is situated at the bottom is bevelled, the same effect could be achieved by bevelling the outer surface of the raised edge 8 of a lower flange 4. Vice versa, the raised edge 8 of the lower flange 4 could also be situated at the outer side of the raised edge 9 of the upper flange 3.
  • The upper flanges 3 are locally supported by knee pieces 20.
  • The entire fall pipe structure is thus formed by different cylindrical elements 1, 1'. These elements are caught over the entire length of the fall pipe between two cables 2, which are more particularly fixed to the lowermost element of the fall pipe. As a result of the own weight of the different elements, these elements lie onto one another so that heavy connections between the different elements are not required.
  • In order to position the different cylindrical elements 1, l' with respect to said cables 2, each of the flanges 3 and 4 show a notch 10 at the passage of the cables 2. The cables 2 are fixed in the notches 10 of the flanges 3 and 4 by making use of locking plates 11 (Figures 2, 4, 5 and 6).
  • Considered in top view, the locking plates 11 show an inner rounding 12 having a radius adapted to the diameter of the cables 2.
  • This ensures a correct and technically reliable positioning of the different cylindrical elements 1 composing the fall pipe over the entire length of these cables 2.
  • As it appears from Figures 4, 5 and 6, the locking plates 11 are provided with pins 13 which are applied in holes 14 provided in the upper flanges 3 for fixing these plates 11 onto the upper flanges 3. In this way, applying such a locking plate 11 can be done easily and quickly, after the cable 2 has been pushed in the notch 10.
  • For blocking the pins 13, use could possibly be made of split pins. In the preferred embodiment according to the figures, this is however not required but the pins 13 are automatically blocked in the holes 14 by applying a further cylindrical element 1. As it appears from Figure 6, the locking plate 11 is more particularly blocked by the raised edge 8 of the lower flange 4 of the upper element 1. The shape of this raised edge 8 in the area of the locking plate 11 is adapted to the shape of this plate 11.
  • Due to the own weight of the usually metal cylindrical elements 1, which clearly have a larger specific weight than water, no further mutual fixing of the different elements 1, 1' is required.
  • All of the cylindrical elements 1, 1' are internally provided with a protective layer 15. This layer may consist of natural or synthetic rubber or a technically equivalent material. The thickness of the protective layer is nearly twice the thickness of the wall of the steel cylindrical elements 1, 1'.
  • Preferably, the resilient lining layer 15 protrudes out of the cylindrical element 1 and fits resiliently against the corresponding lining layer of an adjacent element 1' whereby a bulge may be formed locally. In this way, a good connection is obtained between both elements 1, 1'.
  • The lowermost end of the fall pipe is shown in Figure 7, which end is more particularly provided with a so-called "remote operated vehicle". This remote controllable unit comprises a central shute which is mounted telescopically with respect to the lowermost elements of the fall pipe. By means of the cables 17, the heaving movements of the ship can be compensated for in such a manner that the device is situated at a constant distance from the bottom.
  • On the unit are provided folding supporting arms 18 for all kinds of sensors and/or cameras. For the control of the unit, and thus for the correct positioning of the lowermost end of the fall pipe, thrusters are provided on the unit, as already known per se.
  • From the description of the fall pipe according to the invention, it clearly appears that a fall pipe structure which is adaptable to all depths and working circumstances is made feasible. This fall pipe offers the required flexibility and from a lifting structure with winches for the cables mounted on the ship, cylindrical elements can be added to or removed from the fall pipe.
  • The invention is not limited to the embodiment described herein by way of example and modifications could be applied hereto, provided they fall within the scope of the claims.

Claims (11)

1. A fall pipe for dumping materials, in particular stones, onto a bottom situated under water, characterised in that it is mainly composed of a series of tubular elements piled up onto one another and supported by at least two cables (2), said elements (1) being arranged at both ends to fit against a corresponding end of an adjacent tubular element of said series, and comprise at both ends a flange (3, 4) defining together with a flange (4, 3) of said adjacent tubular element (1') an annular space (5) wherein at least one resilient sealing ring (6) is applied between said flanges (3, 4).
2. A fall pipe according to claim 1, characterised in that said flanges (3, 4) are provided with at least one raised edge (9, 8) directed towards the adjacent tubular element (1, 1'), with said raised edges (9, 8) of the flanges (3, 4) which are situated at two ends fitting against one another, sliding fittingly into one another.
3. A fall pipe according to claim 2, characterised in that at least one of the raised edges (8, 9) sliding fittingly into one another has a bevelled contact surface.
4. A fall pipe according to any one of the claims 1 to 3, characterised in that notches are provided in the flanges (3, 4) for said cables (2), with means (11) being provided on the flange (3) of each of said elements, which is situated at the top in the use position for locking the cables (2) in said notches (10). 5. A fall pipe according to claim 4, characterised in that said locking means comprise a locking plate (11) with pins (13) for fixing this plate (11) around the respective cable (2) on said upper flange (3).
6. A fall pipe according to claim 5, characterised in that said locking plate (11) is blocked between two adjacent flanges (3, 4) of two adjacent elements (1, 1'), in particular between said upper flange (3) and said raised edge (8) directed towards said upper flange (3) of a flange (4) of the adjacent tubular element (1) cooperating with this upper flange (3).
7. A fall pipe according to any one of the claims 1 to 6, characterised in that said tubular elements (1, 1') have an inner wall lined with a resilient protective material (15).
8. A fall pipe according to claim 7, characterised in that said resilient protective material (15) is natural or synthetic rubber.
9. A fall pipe according to claim 7 or 8, characterised in that said lining (15) protrudes out of the tubular element (1) and fits resiliently against the corresponding lining (15) of an adjacent tubular element (1').
10. A fall pipe according to any one of the claims 1 to 9, characterised in that said tubular elements (1, 1') are mainly cylindrical.
11. A fall pipe according to any one of the claims 1 to 10, characterised in that it comprises at the bottom a remote controllable unit with a central shute (16) which is mounted telescopically with respect to the lower elements of the fall pipe.
12. A tubular element for a fall pipe according to any one of the claims 1 to 11, characterised in that it is arranged at both ends to fit against a corresponding end of a further tubular element (1') and comprises at both ends further a flange (3, 4) provided to define together with a flange (4, 3) of said further tubular element an annular space (5) wherein at least one sealing ring (6) is to be applied for sealing the connection between both elements (1, 1').
EP19950200266 1994-02-10 1995-02-06 Fall pipe Expired - Lifetime EP0668211B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
BE9400158A BE1007880A6 (en) 1994-02-10 1994-02-10 Downcomer.
BE9400158 1994-02-10

Publications (2)

Publication Number Publication Date
EP0668211A1 true EP0668211A1 (en) 1995-08-23
EP0668211B1 EP0668211B1 (en) 1998-07-29

Family

ID=3887960

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19950200266 Expired - Lifetime EP0668211B1 (en) 1994-02-10 1995-02-06 Fall pipe

Country Status (4)

Country Link
EP (1) EP0668211B1 (en)
BE (1) BE1007880A6 (en)
DK (1) DK0668211T3 (en)
NO (1) NO304843B1 (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL2003026C2 (en) * 2009-06-15 2010-12-16 Tideway B V PIPE-CONTAINED ELEMENT OF A FALL PIPE, FALL PIPE CONSTRUCTED FROM SUCH ELEMENTS, COUPLING BETWEEN TWO SUCH PIPED ELEMENTS, AND METHOD FOR BUILDING THE FALL PIPE.
NL2004010C2 (en) * 2009-12-23 2011-06-27 Ihc Holland Ie Bv COUPLING FOR THE REMOVABLE CONNECTION OF TUBES.
NL2005095C2 (en) * 2010-07-16 2012-01-17 Tideway B V Device for dredging soil material under water.
EP2130978B1 (en) * 2008-06-06 2012-05-30 Tideway B.V. Vessel and method for depositing material onto an underwater bottom.
EP2594475A1 (en) 2007-08-06 2013-05-22 Itrec B.V. Pipe laying vessel
CN108502110A (en) * 2018-05-11 2018-09-07 上海振华重工(集团)股份有限公司 Fall pipe stone dumper

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1953006A (en) * 1931-06-16 1934-03-27 William P Norris Culvert pipe
DE2509116A1 (en) * 1974-03-04 1975-09-18 Kawasaki Steel Co LOADING CHUTE FOR A CARGO SHIP
NO773352L (en) 1977-09-30 1979-04-02 Stolt Nielsens Rederi COVERING UNDERWATER BODIES, SUCH AS PIPELINES, ELECTRICAL CABLES ETC., FROM SURFACES
NL7904516A (en) 1979-06-08 1980-12-10 Vreeken Cornelis Depositing large stones to reinforced underwater bridge pier - by dropping via tubular wire mesh chute which stretches as it breaks fall of stones
FR2472099A1 (en) * 1979-12-19 1981-06-26 Hispano Suiza Sa Axial clamp-strap for large pipe joint - has bow shape with hooked ends and engages inboard radial faces to pull pipe end flanges together
FR2656917A1 (en) * 1990-01-11 1991-07-12 Schmitz Tona Tonwerke METHOD FOR LINING A CHIMNEY AND SLEEVE FOR JOINING THE TUBE SECTIONS OF AN INTERIOR TUBE FOR THIS PURPOSE.
NL188938B (en) 1981-05-08 1992-06-16 Oord Acz B V Van VESSEL WITH DEVICE FOR POURING MATERIAL ON A SUBSTRATED SOIL.

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1953006A (en) * 1931-06-16 1934-03-27 William P Norris Culvert pipe
DE2509116A1 (en) * 1974-03-04 1975-09-18 Kawasaki Steel Co LOADING CHUTE FOR A CARGO SHIP
NO773352L (en) 1977-09-30 1979-04-02 Stolt Nielsens Rederi COVERING UNDERWATER BODIES, SUCH AS PIPELINES, ELECTRICAL CABLES ETC., FROM SURFACES
GB2004817A (en) * 1977-09-30 1979-04-11 Stolt Nielsens Rederi Dumping vessels
NL7904516A (en) 1979-06-08 1980-12-10 Vreeken Cornelis Depositing large stones to reinforced underwater bridge pier - by dropping via tubular wire mesh chute which stretches as it breaks fall of stones
FR2472099A1 (en) * 1979-12-19 1981-06-26 Hispano Suiza Sa Axial clamp-strap for large pipe joint - has bow shape with hooked ends and engages inboard radial faces to pull pipe end flanges together
NL188938B (en) 1981-05-08 1992-06-16 Oord Acz B V Van VESSEL WITH DEVICE FOR POURING MATERIAL ON A SUBSTRATED SOIL.
FR2656917A1 (en) * 1990-01-11 1991-07-12 Schmitz Tona Tonwerke METHOD FOR LINING A CHIMNEY AND SLEEVE FOR JOINING THE TUBE SECTIONS OF AN INTERIOR TUBE FOR THIS PURPOSE.

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2594475A1 (en) 2007-08-06 2013-05-22 Itrec B.V. Pipe laying vessel
EP2130978B1 (en) * 2008-06-06 2012-05-30 Tideway B.V. Vessel and method for depositing material onto an underwater bottom.
WO2010147460A1 (en) * 2009-06-15 2010-12-23 Tideway B.V. Tubular element of a fall pipe, fall pipe assembled from such elements, coupling between two such tubular elements and method for assembling the fall pipe
US9353898B2 (en) 2009-06-15 2016-05-31 Tideway B.V. Method tubular element of a fall pipe, fall pipe assembled from such elements, coupling between two such tubular elements and method for assembling the fall pipe
NL2003026C2 (en) * 2009-06-15 2010-12-16 Tideway B V PIPE-CONTAINED ELEMENT OF A FALL PIPE, FALL PIPE CONSTRUCTED FROM SUCH ELEMENTS, COUPLING BETWEEN TWO SUCH PIPED ELEMENTS, AND METHOD FOR BUILDING THE FALL PIPE.
WO2011078661A1 (en) * 2009-12-23 2011-06-30 Ihc Holland Ie B.V. Coupling for the releasable coupling of pipes
NL2004010C2 (en) * 2009-12-23 2011-06-27 Ihc Holland Ie Bv COUPLING FOR THE REMOVABLE CONNECTION OF TUBES.
WO2012008829A1 (en) * 2010-07-16 2012-01-19 Tideway Bv Device for dredging soil material under water
NL2005095C2 (en) * 2010-07-16 2012-01-17 Tideway B V Device for dredging soil material under water.
US8965607B2 (en) 2010-07-16 2015-02-24 Tideway B.V. Device for dredging soil material under water
RU2560956C2 (en) * 2010-07-16 2015-08-20 Тайдвей Бв Device and method for heaping material on bottom or equipment covered with water
CN108502110A (en) * 2018-05-11 2018-09-07 上海振华重工(集团)股份有限公司 Fall pipe stone dumper
CN108502110B (en) * 2018-05-11 2023-09-26 上海振华重工(集团)股份有限公司 Drop tube stone throwing ship

Also Published As

Publication number Publication date
NO950479D0 (en) 1995-02-09
BE1007880A6 (en) 1995-11-07
EP0668211B1 (en) 1998-07-29
NO950479L (en) 1995-08-11
NO304843B1 (en) 1999-02-22
DK0668211T3 (en) 1999-05-03

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