US3585739A - Method and suction dredging installation for obtaining sand - Google Patents

Method and suction dredging installation for obtaining sand Download PDF

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Publication number
US3585739A
US3585739A US765420A US3585739DA US3585739A US 3585739 A US3585739 A US 3585739A US 765420 A US765420 A US 765420A US 3585739D A US3585739D A US 3585739DA US 3585739 A US3585739 A US 3585739A
Authority
US
United States
Prior art keywords
jacket
pipe
suction
sand
lower extremity
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.)
Expired - Lifetime
Application number
US765420A
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English (en)
Inventor
Jan De Koning
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.)
Ingenieursbureau voor Systemen en Octrooien Spanstaal BV
Original Assignee
Ingenieursbureau voor Systemen en Octrooien Spanstaal 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 Ingenieursbureau voor Systemen en Octrooien Spanstaal BV filed Critical Ingenieursbureau voor Systemen en Octrooien Spanstaal BV
Application granted granted Critical
Publication of US3585739A publication Critical patent/US3585739A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • E02F3/90—Component parts, e.g. arrangement or adaptation of pumps
    • E02F3/92—Digging elements, e.g. suction heads
    • E02F3/9243—Passive suction heads with no mechanical cutting means
    • 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
    • E02F3/9293—Component parts of suction heads, e.g. edges, strainers for preventing the entry of stones or the like

Definitions

  • an inner pipe In dredging sand, an inner pipe is movable 1ongitudinally within an outer jacket so that the lower end of the inner pipe may be projected beyond the lower end of the jacket and retracted within the jacket. Suction is maintained on the inner pipe and water under pressure is supplied to the jacket so that, when retracted, the lower end of the inner pipe draws in a mixture of sand andwater entering the lower end of the jacket to provide the desired suspension in the pipe. In intermediate positions, the lower end portion of the inner pipe blocks the lower end of the jacket but the lower end portion of the inner pipe is formed to communicate the lower end of the inner pipe with the water under pressure in the jacket.
  • the invention relates to a method for obtaining sand with the aid of a suction-dredging installation having a pump disposed between a suction pipe and a discharge pipe, the suction pipe being inserted a relatively considerable distance into the soil.
  • the invention relates more particularly to the obtaining of sand which lies below a layer ofa different kind of soil, such as clay or loam.
  • a layer of a different kind of soil such as clay or loam.
  • the suction pipe When the sand is below a layer of clay, the suction pipe must first penetrate the clay layer before the sand can be sucked up. The penetration of the suction pipe through the clay layer is difficult and requires a considerable amount of unproductive time. It is the first object of the present invention to reduce this unproductive time to a small fraction of the total operating time. This is obtained in that during an interruption of the suction process the suction pipe is left in the sand. In this way the number of unproductive periods, and therefore the total unproductive or less productive time are considerably reduced.
  • the interruption of the suction process can be related to, for instance, rest periods for the operatives performing this method, or maintenance work on the pump or other components of the suction-dredging installation.
  • the last-mentioned suction-dredging installation according to the invention has been further developed by the adoption of inexpensive features, so that it operates more efficiently during the penetration of the clay layer by the suction pipe, the normal suction process, and the resumption thereof after an interruption. 7
  • the position of the strainer 38 in the jacket end 39 is regulated in dependence on the column of soil which is disposed in the space above the lower edge 40, and in dependence on the pressure of the water supplied to the pipe portion 42 via the gap 52.
  • the concentration of sand in the suspension sucked up can therefore be regulated.
  • suction dredging apparatus as defined in claim 3 including valve means for admitting water into said inner pipe at a level well above the lower extremity thereof to eliminate suction on said inner pipe.
  • suction-dredging apparatus as defined in claim 4 wherein said guide pipe means is formed by a sleeve surrounding and radially spaced from the lower extremity of said inner pipe, said sleeve extending above and below, said lower extremity and being rigid therewith.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Jet Pumps And Other Pumps (AREA)
  • Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
US765420A 1967-10-16 1968-10-07 Method and suction dredging installation for obtaining sand Expired - Lifetime US3585739A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL6714009A NL6714009A (ja) 1967-10-16 1967-10-16

Publications (1)

Publication Number Publication Date
US3585739A true US3585739A (en) 1971-06-22

Family

ID=19801459

Family Applications (2)

Application Number Title Priority Date Filing Date
US00765421A Expired - Lifetime US3756659A (en) 1967-10-16 1968-10-07 Suction dredging installation
US765420A Expired - Lifetime US3585739A (en) 1967-10-16 1968-10-07 Method and suction dredging installation for obtaining sand

Family Applications Before (1)

Application Number Title Priority Date Filing Date
US00765421A Expired - Lifetime US3756659A (en) 1967-10-16 1968-10-07 Suction dredging installation

Country Status (7)

Country Link
US (2) US3756659A (ja)
BE (2) BE722327A (ja)
DE (1) DE1802153C3 (ja)
DK (2) DK132840C (ja)
FR (2) FR1587518A (ja)
GB (2) GB1243066A (ja)
NL (1) NL6714009A (ja)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4020573A (en) * 1974-02-25 1977-05-03 Ballast-Nedam Group N.V. Method and device for sucking up a solid substance from a stock
EP0078563A1 (en) * 1981-10-22 1983-05-11 Hendrikus Van Berk Method for suctioning submerged bottom material and a system for carrying out said method
US4995175A (en) * 1987-04-28 1991-02-26 Johann Winter Pneumatic extraction head
US6112439A (en) * 1997-05-03 2000-09-05 Rinker; Karl Suction dredge
WO2003044285A1 (en) * 2001-11-22 2003-05-30 Graham Albrecht Submerged gravel collection device
ES2221771A1 (es) * 2002-04-23 2005-01-01 Ecodragados, S.L. Procedimiento y equipo de dragado.
US20080124174A1 (en) * 2006-07-19 2008-05-29 Shaw & Sons, Inc. Aquifer replenishment system

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3005669A1 (de) * 1980-02-15 1981-10-01 Schüttgutfördertechnik AG, 9009 St. Gallen Vorrichtung zum foerdern von schuettfaehigem gut, insbesondere unter wasser lagerndem sand, kies o.dgl.
JPH0720771B2 (ja) * 1988-11-30 1995-03-08 エーザイ株式会社 粉粒体の空気輸送装置
NO318582B1 (no) * 2001-12-21 2005-04-11 Gto Subsea As Sugehode for mudring
NL1022832C2 (nl) * 2003-02-20 2004-08-23 Bos & Kalis Baggermaatsch Baggerinrichting en -werkwijze.

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US336619A (en) * 1886-02-23 Apparatus
US1758047A (en) * 1927-05-06 1930-05-13 Jensen Danes Mining or dredging plant
US1861349A (en) * 1929-06-08 1932-05-31 A M Lockett & Company Ltd Dredge
US2774569A (en) * 1954-04-05 1956-12-18 Karl Oscar F Jacobsen Earth moving hydraulic suction nozzles
GB837669A (en) * 1958-12-05 1960-06-15 Blankevoort En Zoon N V D A method and apparatus for suction dredging
US3153290A (en) * 1962-01-30 1964-10-20 Asia Dredging Co Ltd Apparatus for subaqueous excavations
US3163241A (en) * 1961-12-20 1964-12-29 Shell Oil Co Core sample taking
NL6501404A (ja) * 1965-02-04 1966-08-05
NL6501405A (ja) * 1965-02-04 1966-08-05
NL6604227A (ja) * 1966-03-30 1967-10-02

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US661609A (en) * 1897-03-05 1900-11-13 Frank K Hoover Dredging-machine.
GB190827674A (en) * 1908-12-19 1909-05-06 Jan Van Rede Improvements in Suction-nozzles for Pneumatic Conveyors.
US1918330A (en) * 1931-07-28 1933-07-18 Green Sherwood Unloading system
US3301606A (en) * 1966-06-23 1967-01-31 Anthony I Bruno Cyclonic elevator
US3438678A (en) * 1966-08-11 1969-04-15 Alpine Geophysical Associates Method and apparatus for conveying materials

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US336619A (en) * 1886-02-23 Apparatus
US1758047A (en) * 1927-05-06 1930-05-13 Jensen Danes Mining or dredging plant
US1861349A (en) * 1929-06-08 1932-05-31 A M Lockett & Company Ltd Dredge
US2774569A (en) * 1954-04-05 1956-12-18 Karl Oscar F Jacobsen Earth moving hydraulic suction nozzles
GB837669A (en) * 1958-12-05 1960-06-15 Blankevoort En Zoon N V D A method and apparatus for suction dredging
US3163241A (en) * 1961-12-20 1964-12-29 Shell Oil Co Core sample taking
US3153290A (en) * 1962-01-30 1964-10-20 Asia Dredging Co Ltd Apparatus for subaqueous excavations
NL6501404A (ja) * 1965-02-04 1966-08-05
NL6501405A (ja) * 1965-02-04 1966-08-05
NL6604227A (ja) * 1966-03-30 1967-10-02

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4020573A (en) * 1974-02-25 1977-05-03 Ballast-Nedam Group N.V. Method and device for sucking up a solid substance from a stock
EP0078563A1 (en) * 1981-10-22 1983-05-11 Hendrikus Van Berk Method for suctioning submerged bottom material and a system for carrying out said method
US4995175A (en) * 1987-04-28 1991-02-26 Johann Winter Pneumatic extraction head
US6112439A (en) * 1997-05-03 2000-09-05 Rinker; Karl Suction dredge
WO2003044285A1 (en) * 2001-11-22 2003-05-30 Graham Albrecht Submerged gravel collection device
ES2221771A1 (es) * 2002-04-23 2005-01-01 Ecodragados, S.L. Procedimiento y equipo de dragado.
US20080124174A1 (en) * 2006-07-19 2008-05-29 Shaw & Sons, Inc. Aquifer replenishment system
US7575394B2 (en) * 2006-07-19 2009-08-18 Lithocrete, Inc. Aquifer replenishment system

Also Published As

Publication number Publication date
US3756659A (en) 1973-09-04
DE1802153B2 (de) 1974-02-21
DE1802153C3 (de) 1974-09-26
FR1587519A (ja) 1970-03-20
DE1802157A1 (de) 1969-06-12
BE722326A (ja) 1969-04-15
NL6714009A (ja) 1969-04-18
DE1802153A1 (de) 1969-06-19
FR1587518A (ja) 1970-03-20
DK132840B (da) 1976-02-16
GB1243065A (en) 1971-08-18
DK132840C (da) 1976-07-12
GB1243066A (en) 1971-08-18
DK118599B (da) 1970-09-07
BE722327A (ja) 1969-04-15

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