EP2383392A1 - Entwässerungssystem - Google Patents

Entwässerungssystem Download PDF

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Publication number
EP2383392A1
EP2383392A1 EP10161478A EP10161478A EP2383392A1 EP 2383392 A1 EP2383392 A1 EP 2383392A1 EP 10161478 A EP10161478 A EP 10161478A EP 10161478 A EP10161478 A EP 10161478A EP 2383392 A1 EP2383392 A1 EP 2383392A1
Authority
EP
European Patent Office
Prior art keywords
elongated members
crests
pipe system
pipe
drainage pipe
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.)
Withdrawn
Application number
EP10161478A
Other languages
English (en)
French (fr)
Inventor
Nikos Leontaridis
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.)
Pipelife Nederland BV
Original Assignee
Pipelife Nederland 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 Pipelife Nederland BV filed Critical Pipelife Nederland BV
Priority to EP10161478A priority Critical patent/EP2383392A1/de
Publication of EP2383392A1 publication Critical patent/EP2383392A1/de
Withdrawn legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02B—HYDRAULIC ENGINEERING
    • E02B11/00—Drainage of soil, e.g. for agricultural purposes
    • E02B11/005—Drainage conduits

Definitions

  • the invention is related to a drain pipe system, comprising a corrugated pipe having a wall with alternating valleys and crests which extend in circumferential direction, said wall being provided with openings, and a filter sleeve around the pipe.
  • a drain pipe system of this type is generally known.
  • the filter sleeve thereof generally consists of a cloth or geotextile having a specific mesh size or range of mesh sizes in such a way that larger particles are filtered out and cannot reach the corrugated pipe wall openings.
  • the full surface of the geotextile is available for such filter action. This provides a large filter capacity.
  • the filter action of the geotextile is limited to the spots where it overlies the perforations in the pipe. Thereby, the area of the geotextile which is available for filtration is severely limited, as a result of which the design filter capacity cannot be ensured in the long run. The function of draining the ground parcel is thereby hampered.
  • the filter sleeve thereof consists of a fiber material, for instance coconut fibers.
  • the purpose of this sleeve is to collect particles which are present in the groundwater, and to establish a specific particle size distribution through the thickness of the sleeve. Once a specific pattern of particles has settled through the thickness, a desired filter action is obtained. The larger particles, which bring the risk of choking the perforated pipe, are prevented from entering the drain system whereby a long-term proper draining action can be ensured.
  • the filter sleeve thus plays an important role in maintaining the desired particle distribution pattern around the perforated pipe.
  • materials such as coconut fibers will generally decompose after some time, which causes loss of support for the particle distribution pattern. In case movements occur in the soil, said pattern is readily lost whereby the desired filter action is no longer ensured. As a result, the perforated drainage pipe runs the risk of being choked.
  • Another drain pipe system is disclosed in EP-A-33570 .
  • Said prior art pipe system has a water permeable covering which consists of foil layers enclosing air filled cushions.
  • the foil layers are provided with openings of a certain size, whereby particles of a specific size may collect between the foil layers so as to obtain a filtering effect.
  • the disadvantage of such double foil layer with air filled cushions is that it is vulnerable to damages caused by external forces exerted thereon, such as occur when installing the drain pipe system as well as thereafter as a result of ground forces.
  • the double foil layer with air filled cushions is costly
  • the object of the invention is therefore to provide a drain pipe system of the type described before which is of a more sturdy, economic design and which nevertheless provides a desired filtering capability. Said object is achieved by the filter sleeve being supported with respect to the pipe by means of elongated members which extend transversely with respect to the valleys and crests and which are connected, e.g. glued, adhered or welded to the crests.
  • the elongated support members create a distance between the pipe openings and the filter sleeve.
  • the elongate support members prevent the filter sleeve from entering the valleys, which makes it possible to maintain a desired distance between the filter sleeve and the openings in the pipe wall.
  • the full surface of the filter sleeve remains available for filtering purposes, also after the drain pipe has been buried in the soil and is exposed to earth pressures.
  • the support structure has a certain rigidity, in such a way that the filter sleeve supported thereby can be held in the desired position with respect to the pipe so as to ensure long term draining capacity.
  • the support structure can be manufactured form e.g.
  • the filter sleeve can be supported on the outside of the elongated members; furthermore, the elongated members protrude in radial direction beyond the crests so as to obtain a relatively large distance between the filter sleeve and the pipe wall openings. Also, the valleys of the pipe wall are at a distance from the radial inner side of the elongated members. Thereby, the flow of liquid around the pipe wall and through the valleys is not impeded, such that the desired filter capacity can be obtained.
  • the elongated members may be arranged according to several shapes with respect to the pipe. According to a first possibility, the elongated members are parallel to the axis of the corrugated tube. According to another possibility, the elongated members are arranged helically at an angle with respect to the axis of the corrugated pipe. Preferably, the elongated members are regularly spaced in the circumferential direction of the corrugated tube. Such relative position of the elongated members ensure a uniform support of the filter sleeve around the pipe.
  • the cross section of the elongated members may have any shape, provided the strength and rigidity thereof is sufficient to keep the filter sleeve at the desired distance from the holes in the pipe. For instance, the cross sectional shape may be square, rectangular, circular, oval etc.
  • the elongated members may comprise plastic strips.
  • said plastic strip comprise plasticized material. It then remains quite well possible to curve the pipe to such an extent that it can be rolled onto, and unrolled from, a spool.
  • the material of the pipe and of the strips may comprise polyvinylchloride or polyethylene.
  • the porous sheets may comprise a woven, nonwoven, knitted or braided material.
  • the perforated pipe may be circular, square, rectangular or a triangular in cross-section. Other shapes with more angles are possible as well.
  • the filter sleeve may comprise more than one filter cloth or geotextile.
  • the support structure has a certain rigidity, in such a way that the filter sleeve supported by can be held in the desired position with respect to the pipe so as to ensure long term draining capacity.
  • the invention is furthermore related to a corrugated pipe for a drain pipe system according as described before, having a wall with alternating valleys and crests which extend in circumferential direction, said wall being provided with openings, as well as elongated members which extend transversely with respect to the ribs and which are adhered or welded to the crests.
  • the drain pipe system shown in figure 1 comprises a so-called corrugated pipe 1 which consists of alternating wave crests 2 and wave valleys 3. In the wave valleys 3, drain openings 4 have been provided.
  • longitudinal strips 5 have been welded onto the wave crests 2. These longitudinal strips 5 are spaced in the circumferential direction of the pipe 1, as shown in figure 2 . On the outside of the longitudinal strips 5, a filter sleeve 6, such as a filter cloth or a geotextile, has been fitted.
  • the longitudinal strips 5 ensure that the filter cloth or geotextile 6 is maintained at a distance from the wave valleys 3, in particular from the holes 4 therein, such that the full surface of the filter cloth or geotextile 6 can maintain its filtering action.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Agronomy & Crop Science (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
EP10161478A 2010-04-29 2010-04-29 Entwässerungssystem Withdrawn EP2383392A1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP10161478A EP2383392A1 (de) 2010-04-29 2010-04-29 Entwässerungssystem

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP10161478A EP2383392A1 (de) 2010-04-29 2010-04-29 Entwässerungssystem

Publications (1)

Publication Number Publication Date
EP2383392A1 true EP2383392A1 (de) 2011-11-02

Family

ID=42751502

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10161478A Withdrawn EP2383392A1 (de) 2010-04-29 2010-04-29 Entwässerungssystem

Country Status (1)

Country Link
EP (1) EP2383392A1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3101178A1 (de) * 2015-06-04 2016-12-07 Pipelife Nederland B.V. Verfahren zur herstellung eines abflusssystems

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1306138A (fr) * 1961-09-02 1962-10-13 Houilleres Bassin Du Nord éléments de conduits enterrés destinés au transport et au transfert de liquides
NL7416633A (nl) * 1974-12-20 1976-06-22 Polva Nederland Bv Beklede drainagebuis.
NL7905922A (nl) * 1979-08-01 1981-02-03 Wavin Bv Kunststofdrainageribbelbuis met vezelomwikkeling.
EP0029713A1 (de) 1979-11-23 1981-06-03 Knitted Sleeve (Overseas) Ltd Landentwässerungsvorrichtung mit einem von einer gestrickten Filterhülle bedeckten Drainagerohr
EP0033570A1 (de) 1980-01-25 1981-08-12 Wavin B.V. Kunststoff-Wellrohr
US4909665A (en) * 1988-08-16 1990-03-20 Caouette Henry H Fabric-covered structure

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1306138A (fr) * 1961-09-02 1962-10-13 Houilleres Bassin Du Nord éléments de conduits enterrés destinés au transport et au transfert de liquides
NL7416633A (nl) * 1974-12-20 1976-06-22 Polva Nederland Bv Beklede drainagebuis.
NL7905922A (nl) * 1979-08-01 1981-02-03 Wavin Bv Kunststofdrainageribbelbuis met vezelomwikkeling.
EP0029713A1 (de) 1979-11-23 1981-06-03 Knitted Sleeve (Overseas) Ltd Landentwässerungsvorrichtung mit einem von einer gestrickten Filterhülle bedeckten Drainagerohr
EP0033570A1 (de) 1980-01-25 1981-08-12 Wavin B.V. Kunststoff-Wellrohr
US4909665A (en) * 1988-08-16 1990-03-20 Caouette Henry H Fabric-covered structure

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3101178A1 (de) * 2015-06-04 2016-12-07 Pipelife Nederland B.V. Verfahren zur herstellung eines abflusssystems

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