EP2321467A1 - Scellement de canaux - Google Patents

Scellement de canaux

Info

Publication number
EP2321467A1
EP2321467A1 EP09782282A EP09782282A EP2321467A1 EP 2321467 A1 EP2321467 A1 EP 2321467A1 EP 09782282 A EP09782282 A EP 09782282A EP 09782282 A EP09782282 A EP 09782282A EP 2321467 A1 EP2321467 A1 EP 2321467A1
Authority
EP
European Patent Office
Prior art keywords
canal
sealing
working surface
working
water
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
EP09782282A
Other languages
German (de)
English (en)
Other versions
EP2321467B1 (fr
Inventor
Michael ALTSCHÄFFL
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.)
HAGN UMWELTTECHNIK GmbH
Original Assignee
Hagn Umwelt GmbH
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 Hagn Umwelt GmbH filed Critical Hagn Umwelt GmbH
Publication of EP2321467A1 publication Critical patent/EP2321467A1/fr
Application granted granted Critical
Publication of EP2321467B1 publication Critical patent/EP2321467B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02B—HYDRAULIC ENGINEERING
    • E02B3/00—Engineering works in connection with control or use of streams, rivers, coasts, or other marine sites; Sealings or joints for engineering works in general
    • E02B3/04—Structures or apparatus for, or methods of, protecting banks, coasts, or harbours
    • E02B3/12—Revetment of banks, dams, watercourses, or the like, e.g. the sea-floor
    • E02B3/121—Devices for applying linings on banks or the water bottom
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02B—HYDRAULIC ENGINEERING
    • E02B5/00—Artificial water canals, e.g. irrigation canals
    • E02B5/02—Making or lining canals

Definitions

  • the present invention relates to a device and a method for the sealing of canals and other watercourses in a water-bearing state.
  • the invention relates to a canal working platform for the sealing of canals and other watercourses in a water-bearing state, a canal sealing system for sealing a canal, a canal sealing method for sealing a canal, the use of a canal working platform and a canal section with a canal working platform.
  • Canal or watercourse are also understood to mean other natural or artificial waters and also transport structures for conveying and structures for the holding or storage of other fluids, such as for example aqueducts or reservoirs.
  • canal is, furthermore, to be understood to mean in particular also natural or artificial waters, such as for example a lake or a pool.
  • water reservoirs are also to be understood by the term canal.
  • the water is temporarily removed from the canal for sealing, so that the base surface and also the adjoining lateral inclines or walls can be sealed.
  • the draining of the canal is problematic, for example due to high costs and an additionally necessary period of time in which the canal can not be used.
  • the draining of a canal also means, at the same time, an alteration of the weight forces acting as a whole on the ground, so that for example through lifting forces from the ground, intense stresses can in turn occur to the canal structure. In extreme cases, cracks and major damages can occur here to the canal structure.
  • a ground water level in situ in the environment it can be necessary for the ground water to be lowered locally, because this acts as a lifting force on the canal or water flows into the canal through leaking walls or base surfaces.
  • a canal sealing method for sealing a canal in waterbearing state, in which the following steps are provided.
  • a working surface is arranged above the water surface of the canal which is to be sealed, wherein the working surface spans at least a portion of the water-bearing region of the canal.
  • the term above is also understood to mean an arrangement at the same height as the water level.
  • this is also understood to mean an arrangement in which the water is displaced through a trough-like device and the working surface lies beneath the surrounding water level.
  • the working surface can also be arranged somewhat below the water level when the connecting of the sealing webs is not impaired by water, i.e. is insensitive to water).
  • a first web of a web-shaped sealing material is deployed with at least one edge on the working surface.
  • the web can also lie with both edges on the working surface.
  • a second web of the sealing material is then deployed on the working surface, wherein the second sealing web is deployed at least with one edge on the working surface and is aligned to the first sealing web, e.g. with the edge of the second sealing web to the edge of the first sealing web, with the connection also being possible over the surface, for example in the case of overlapping webs.
  • the connection takes place of at least one partial region of the adjoining edges of the first and of the second sealing web on the working surface.
  • a sealing web can then be deployed again on the working surface, connected with the edge of the already connected sealing webs, and the working surface can be moved again, so that a further lowering is possible.
  • this method it is possible to gradually arrive at a continuous sealing plane which seals the canal wall with respect to the adjacent water, wherein the connecting process of the individual sealing segments on the working plane takes place securely and reliably.
  • the connecting is carried out on the working surface, known and proven connecting techniques can be used here, such as for example hot welding.
  • the connecting of the sealing webs can also take place mechanically.
  • the sealing webs can consequently be connected with each other reliably without great effort.
  • the working surface spans at least the water-bearing region of the canal. As the working surface is moved in relation to the sealing webs which are connected to each other and not vice versa, a new alignment of the sealing surface in relation to the canal is not necessary after the moving of the working surface. The working surface is, as it were, drawn away under the sealing web.
  • the sealing webs which are connected together are lowered onto the canal base; in so doing, at the same time an exact close fit of the sealing webs to the canal wall is also possible.
  • the movement of the working surface only takes place to such an extent that an edge region of the sealing webs always remains on the working platform, after the moving or lowering a further sealing web can be laid out on the working surface.
  • the further sealing web can also be connected with the or one of the already connected sealing webs. This connection also takes place above the water surface.
  • the sealing material is preferably plastic sealing webs (PSW), which consist for example of PE-HD.
  • PSW plastic sealing webs
  • Plastic sealing webs are suitable due to their high flexibility with, at the same time, a high strength, and can in addition adapt themselves very well to the geometry of the canal.
  • the plastic sealing web can be produced for example in thicknesses of 1.0 mm to 3.0 mm.
  • the connection with a double seam which is welded thermally has proved to be particularly advantageous. Through the resulting cavity in the double seam, it is possible to check every weld seam for tightness. This offers a possibility for monitoring, not only during the sealing process, but furthermore also constitutes a possibility for monitoring the connection sites in installed state at one or more later times.
  • a canal or a similar watercourse is a longitudinally directed structure, basically various directions of the laid-out sealing webs can be identified in relation to the direction of the canal.
  • the canal can be sealed by sealing webs being laid transversely to the canal direction and being connected to each other on their longitudinal edges.
  • sealing webs which can be stored according to material, thickness and weight e.g. on rolls with a web length of up to several hundred metres, are arranged and connected in longitudinal direction, i.e. in the direction of the canal parallel to each other.
  • a connecting at the ends of the sealing webs, i.e. at the joints of the narrow sides is then necessary, in order to achieve a continuous sealing of the canal.
  • transversely arranged sealing webs With transversely arranged sealing webs, on the other hand, only a connection of the sealing webs on their longitudinal edges is necessary.
  • the connecting seams can be checked for tightness with an embodiment for example as a double seam, with this also being possible without great effort at a later time, i.e. in the installed state.
  • longitudinally arranged sealing webs on the other hand, the connecting seams also run in longitudinal direction, i.e. a connecting seam arranged in the centre does not project out of the water at any point, whereby a checking under water in the final state is only possible with great difficulty (using a diver), because with a double seam the tightness is checked by applying a pressure into the cavity which is produced by the double seam.
  • unrolling supports can be arranged on the working platform, which are moved successively in longitudinal direction of the canal in order to thereby unroll the sealing webs from the unrolling supports.
  • the connecting of the sealing webs, unrolled in parallel, can take place here by a connecting device extending over the entire width of the canal, which connects the edges continuously during unrolling.
  • a further variant, in which a continuous movement of the working platform is possible, also consists in that the sealing webs are rolled out obliquely or diagonally in relation to the longitudinal direction of the canal.
  • the free region of at least one sealing web is fixed on the canal base and the lowering takes place by a differential water level, wherein the water level in the region of the canal which is not yet sealed constitutes the lower current and the water level in the region which is already sealed constitutes the upper current, which is separated from the lower current by the seal reaching from the working platform to the canal bottom, and has a higher water level.
  • the advantage of lowering by the differential water level consists in that an additional device is not necessary for lowering the free region of the sealing webs.
  • This is particularly advantageous when the sealing web has a lower density than water, as is the case for example with the plastic sealing webs which have already been mentioned, in which the density is less by 0.05 than that of water.
  • Such a light sealing web would namely initially float on the surface of the water on moving away of the working plane.
  • a differential water level of for example greater than approx. 0.01 m to approx. 1.0 m, the sealing web is forced, however, to descend, because it is in fact fixed to the canal base and the water accumulates, as it were, on the plastic sealing web.
  • the differential water level can be achieved simply for example in that water is brought from the lower current region by pumping over into the upper current region.
  • the differential water level can also be achieved by following water, controlled from above, in the canal, wherein the controlling here of the wake requires particular attention.
  • a canal has to be renovated during full operation, such as for example in the case of a drinking water duct
  • a lifting system can be provided, functioning without a separate pump, which already functions with a small differential water level.
  • the trailer brings about a controlled lowering of the sealing web, so that a folding of the sealing webs during the settling process is prevented or reduced as far as possible.
  • the ramp- shaped trailer is preferably fastened to the working surface or to a sub-construction of the working surface so as to be swivellable about a horizontal axis, so that the trailer can also be used in different depths of water.
  • the trailer can also be constructed so as to be variable in its length, for example by a telescopic embodiment or an embodiment with elements which are able to be additionally fitted, which in the case of particularly great depths of water nevertheless produce an incline which does not drop too steeply.
  • a folding during lowering is avoided, which also has a positive effect on the region of the sealing web which is still situated on the working surface.
  • a fold- free resting of the regions which are to be connected is fundamentally necessary for the further welding of the sealing webs.
  • a chamfering of the region of the working platform can also be provided, from which the sealing webs are lowered into the water, in order to simplify the lowering.
  • a temporary lowering of the region of the working platform can also be provided, from which the sealing webs are lowered into the water, in order to facilitate the lowering of the sealing webs.
  • the working surface is adapted to the canal cross-section by means of side wings which are held swivellably on the working surface, and the deployed sealing webs together cover the entire canal cross-section and at least a portion of the lateral canal edges.
  • the region between the working surface and the actual canal edge can be bridged, in order to make a working surface available on the entire width of the canal, i.e. not only the width of the water surface, but also in the region of the laterally adjoining bank inclines. It is thereby ensured that the connection of the sealing webs can be carried out reliably over the entire length of the connecting seam. At the same time, it is thereby also ensured that the canal is sealed in its entire cross-section, i.e. also up to the upper rims of the canal edges.
  • the movable side wings permit an adaptation to changing cross-sections in the course of the canal.
  • the side wings are therefore inclined more steeply in the case of narrow cross-sections and flatter in the case of wide cross-sections.
  • the side wings are preferably embodied so as to be telescopic, in order to be able to be used for as broad a spectrum of different cross-sections as possible.
  • narrow passes for example in bridge narrow passes, the side wings can be folded in or else can be dismantled without difficulty.
  • the working platform can thereby be used on the entire length of the canal and a conversion or a dismantling and assembly of the working platform is not necessary.
  • side wings instead of the side wings, of course other elements can also be provided, in order to bridge the distance from the actual working platform to the canal edge in the case of changes in cross- section; for example, projections can also be pushed out telescopically from the working plane, in particular parallel to the plane of the platform, in order to reach up to the bank edge. The laying out of the sealing webs can then also take place over the bank region which is not covered by water up to the adjoining pushed-out part of the working platform onto the working platform itself.
  • a canal working platform for the sealing of canals and other watercourses in a water-bearing state, which comprises a support structure and a working surface which has a working plane which is held by the support structure, wherein the working surface is able to be arranged above the water level and is constructed to span at least a portion of the water-bearing region of the canal, wherein the working surface is constructed such that web-shaped sealing material is able to be deployed for sealing the canal and is able to be connected together on the working surface.
  • the term 'above' is also understood to mean an arrangement at the same height as the water level; furthermore, this is also understood to mean an arrangement in which the water is displaced by a trough-like device and the working surface lies beneath the surrounding water level.
  • the working surface spans at least the water-bearing region of the canal.
  • the working surface is preferably designed to be so large that at least two webs of the sealing material which is used can be laid out adjacent to each other, in order to be connected together in this position on the working surface.
  • the working surface comprises substantially the working planes held by the support structure and possibly further extensions of the working plane, explained in further detail below, wherein the latter does not necessarily have to be even. It is also pointed out that the working plane itself can in turn be divided.
  • the term working surface preferably refers to the region which is necessary in order to be able to lay out at least a part of the webs which are to be connected so that a problem- free connection can take place. For this, provision can also be made to make available a standing area for the operators and a higher possibility for laying out, compared with this, so that the connecting or the operating of the connecting tools or machines is possible more easily for the skilled workers and/or operators.
  • the working surface is able to be stabilized temporarily in position.
  • the working surface is preferably constructed so as to be movable in relation to the waterbearing canal.
  • the mobility in relation to the water-bearing canal makes it possible that the sealing webs can remain in their position in relation to the canal once they are connected together, so that a laborious handling of sealing webs which are connected together is dispensed with.
  • the working surface Through the mobility of the working surface, the working surface can be drawn away, as it were, under the sealing webs, in order to then bring the sealing webs, which are connected together, to their place of use on the canal base.
  • a ramp-shaped trailer is arranged which forms a continuation of the working surface and extends obliquely downwards away from the working surface.
  • the trailer which preferably extends from the working surface to the base of the canal, forms a bridge between the two planes which are spaced apart from each other, i.e. between the working surface and the usage surface on the canal base, whereby a controlled lowering of the sealing surface which is produced above the water surface becomes possible, in order to lay this flat onto the canal base and the lateral inclines.
  • the trailer is preferably held swivellably on the working surface.
  • the trailer can also be constructed so as to be telescopic or able to be extended by the fitting of module elements.
  • a side wing is arranged which is held detachably on the canal working platform and forms a lateral continuation of the working plane.
  • the side wings allow the working surface to be adapted to the respective canal cross-section or cross-section of the watercourse.
  • the articulated mounting of the side wings additionally permits an adaptation to different lateral bank angles of the canal walls, which also means a better adaptability of the canal working platform to different depths of water.
  • the support structure is constructed so as to be floating.
  • a floating platform offers the advantage that it can be brought in situ via the canal itself. Moreover, the platform is independent of the local depth of water.
  • a fixed connection e.g. with the canal wall or with the canal base is only necessary for stabilizing the position.
  • the canal working platform can also be deposited on the base of the canal or else can be embodied travelling on the bottom of the canal, for example with wheels or with a caterpillar track, which presents itself in particular in the case of small and constant depths of water over the length of the canal.
  • the moving of the platform in relation to the canal takes place for example by means of steel cables and caterpillars or wheel loaders, which travel in the case of flat canal cross-sections in the canal itself or for example can also move laterally to the canal on a dam top path.
  • a further variant is the moving of the pontoon by pusher craft.
  • support elements are provided by which the working surface is able to be fixed temporarily in its position in the canal.
  • These supports can be mechanical stilts or hydraulic stilts for example, by which the platform can be raised or lowered vertically, in order to be able to thereby balance out different water levels.
  • the capability of being temporarily fixed is necessary in order to keep the canal working platform or the working surface stable in position for the welding of the sealing components. By holding stable in position, influences from swell, for example with a floating platform, or else movement of the platform by equipment or personnel, are prevented.
  • a canal sealing system for sealing the canal in a water-bearing state is provided according to the invention, in which a canal working platform according to one of the previously described embodiments and a pumping station are provided, by which water is able to be pumped from one side of the canal working platform to the other and a differential water level is able to be produced.
  • a controlled lowering of the sealing components i.e. of the sealing webs which are connected together, is possible, because a differential water level can be set which exerts the desired effect on the sealing material, i.e. a weight force, and presses this down towards the canal base.
  • the differential water level can also be achieved by a controlled inflow of water in the upper current.
  • the pumping station can also be called upon to support the regulation of the inflowing water, pumping excessive inflowing water in the manner of a bypass past the sealing working site, i.e. in a downstream direction.
  • a device for connecting the sealing webs is provided on the working surface.
  • This is preferably a fixedly installed device which is connected with the support structure of the platform.
  • the connecting device for example a hot-welding system, and the construction of the platform are thereby able to be stabilized more simply in their position with respect to each other.
  • the sealing material can also be fixed more simply for the connecting process, which is essential for a precise connecting seam.
  • the system is thereby able to make available as high a number of cycles as possible, i.e. as high a number as possible of sealing webs connected together, without the reliability and security of the connection sites being thereby impaired.
  • the provision of the connecting device in fixed relation to the working surface permits, for example, a semi-automatic sealing method, because only the sealing webs have to be introduced and aligned. The connecting of the sealing webs itself can then take place automatically.
  • the canal sealing system is preferably equipped with an additional roofing of the working surface.
  • a housing for example in the case of external temperatures of around freezing point, in which for example a hot-welding would not lead to the desired results.
  • a component of the system is preferably also a device for the preparation of the sealing webs.
  • the sealing webs are arranged on rolls, these can be stored in an unrolling support, in order to thus be unrolled therefrom.
  • the unrolling support which may be movable or displaceable in the direction of the canal, i.e.
  • the sealing web can be drawn over with an unrolling device to the other side of the canal, for example with a cable winch or with a cable fastened to a wheel loader.
  • the sealing web can then be deposited onto the working platform and the side wings and the bank region and can be aligned to the sealing web which is already lying on the working platform.
  • unrolling devices i.e. several unrolling supports can also be arranged adjacent to each other on the bank.
  • a protective layer can also be introduced.
  • This protective layer can already be situated on the sealing web or can be introduced as a separate protective layer.
  • a protective non- woven material can be used as a protective layer which, like the sealing web, is available on rolls.
  • unrolling supports can be used, having several suspension devices arranged in parallel, so that the sealing web and the protective non- woven material can also be unrolled together or one over another.
  • a protective non-woven material can also be deployed initially, which is connected with an adjacent protective non-woven material web, so that the sealing webs can be applied onto this protective non- woven material surface and can be connected with each other.
  • the respective longitudinal joints of the protective non- woven material are connected thermally or mechanically, for example, so that in the lowering process a protection of the lowered sealing web is ensured over the entire surface.
  • the invention also relates to the use of a canal working platform according to one of the described variant embodiments and to the use of a canal sealing system according to one of the described variant embodiments.
  • the invention also comprises a canal section with a canal working platform according to one of the described embodiments.
  • Fig.l shows a cross-section through a canal with the canal sealing system according to the invention
  • Fig. 2 shows a longitudinal section through the canal and the canal sealing system according to Fig. 1
  • Fig. 3 shows a cross-section through the canal according to Fig. 1 in sealed state.
  • a canal 12 is shown, the cross-section of which has a first lateral chamfer 14, a substantially flat base surface 16 and a second lateral incline 18.
  • the two lateral inclines 14, 18 continue at their highest point respectively into approximately horizontally adjoining terrain 20.
  • the canal 12 is shown in a water-bearing state, i.e. with a water level 22.
  • a canal working platform 24 which has a support structure which it not shown, and a working surface 26 held by the support structure.
  • the working surface 26 extends over a majority of the water level 22.
  • the platform can be constructed for example as a floating platform, for example a steel structure provided with at least one pontoon, on which the working surface 26 is formed.
  • Support elements 28 are provided on the canal working platform 24, by which the working surface 26 is able to be fixed temporarily in its position in the canal 12. In other words, in the phase shown in Fig. 1 the working surface 26 is held so as to be stable in position by means of the support elements 28.
  • the support elements 28 are hydraulic stilts, for example, which are positioned on the base surface 16 of the canal 12 and introduce the weight forces of the working surface 26 into the canal base 16.
  • side wings 30 are arranged on the canal working platform 24 on the lateral edges, which side wings are held detachably on the working platform and form a lateral continuation of the working surface 26.
  • the working surface resulting as a whole from the side wings 30 and the working surface 26 can be adapted to different canal cross-sections.
  • the working surface 26 also serves, particularly in the region of the platform, as a base surface for example for a pumping station and for any units and lifting equipment which may be necessary.
  • the working surface 26 is constructed to be flat such that a web-shaped sealing material, i.e. sealing webs 32, is able to be deployed for sealing the canal 12 on the working surface 26.
  • a protective non-woven material 23 is also laid beneath the sealing web 32, as a protection of the sealing web 32 from damage, which is also designated as geotextile, which is provided between the canal bottom and the sealing web.
  • this geotextile i.e. the non-woven material web 34, is rolled out before the unrolling of the sealing web 32 on the working platform 24.
  • the thickness of the geotextile is to be adapted to the roughness of the substrate.
  • the sealing web is a plastic sealing web (PSW) of PE-HD, with this being produced for example in thicknesses of between 1 and 3 mm.
  • PSW plastic sealing web
  • a so-called double seam is used, wherein the material is thermally welded.
  • each weld seam can be checked for tightness, which constitutes additional security.
  • each weld seam can also be checked for its tightness in the final state, because the start and end of the weld seam lie respectively above the water level 22.
  • a device 36 is provided on one of the bank regions 20, which receives the web materials 32,34, which are available on rolls, in the manner of an unrolling support, wherein in the drawing only one roll 38 is shown.
  • the roll 38 is suspended into the device 36 and is drawn away from there over the canal cross-section, for example by means of a cable winch, which presents itself in particular for larger canal cross-sections. The web can then be aligned on the working platform 26. As can be seen in Fig.
  • the working platform 24 has a sufficiently large working plane as part of the working surface 26, so that a first sealing web 32a can lie with an edge region or else even completely on the working platform 24, wherein adjacent to the laid-out web 32a in addition sufficient space is available to lay out a second sealing web 32b.
  • the canal working platform 24 is moved in relation to the sealing webs 32a, 32b, which are connected together, in longitudinal direction of the canal 12, i.e. towards the left in Fig. 2.
  • the working platform 24 is thus drawn away towards the left under the sealing webs 32.
  • the sealing webs 32 remain fixed in their position with respect to the canal 12 upon movement of the platform.
  • the sealing web 32 is forced to sink locally at the start of the sealing process by a superimposed load, for example by sand bags, plates or similar.
  • the sealing web 32 is then fastened to the existent bottom 16 of the canal 12 and is connected tightly. This can take place for example by the use of divers who fasten the sealing web by means of submerged concrete, flat iron bars or injection anchors or studs.
  • the tight connection ensures that no water can flow under the sealing web 32 and can detach it from the base 16 of the canal 12 or else from side walls 14, 18.
  • the tight connection is also particularly important in order to separate an upper current 50 from a lower current 48, which will be described in further detail.
  • a tight connection likewise takes place of the sealing web 32 with the canal base 16 or with the lateral inclines 14,18.
  • the sealing webs 32 remain on the canal working platform 24 with their edge regions which are not yet connected, i.e. with their left edge regions in Fig. 2. After the moving of the working platform 24, the sealing webs 32 can be lowered onto the canal base 16.
  • a ramp-shaped trailer 40 is arranged, which forms a continuation of the working surface 26 and extends away from the working surface 26 obliquely downwards to the canal base 16.
  • the trailer 40 is preferably held swivellably on the working surface 26, in order to be able to bridge different depths of water.
  • the trailer 40 makes possible a controlled lowering of the sealing webs 32 down from the working surface 26 to the canal base 16 and prevents a folding of the sealing components during lowering process, whereby also a folding in the region which is to be connected is avoided, which is still situated on the working surface. The lack of folds in this region is necessary for the further connecting process.
  • a pumping station is provided, which is not illustrated, by which water is able to be pumped from one side of the canal working platform 24 to the other side, in order to produce a difference 42 of the two adjoining water levels 44 and 46.
  • the sealing web 32 divides the water in the canal 12 into the already mentioned lower current 48 and respectively upper current 50.
  • the water level 46 rises in the upper current 50.
  • the water situated in the upper current 50 presses the sealing web 32 and the non- woven material web 34 situated therebeneath downwards onto the canal base 16, although the sealing web 32 is lighter than water.
  • the water situated under the sealing components is pressed away in the course of this by the superimposed load in the direction of the lower current.
  • the differential water level 42 can be between 1 cm and 1 m, for example.
  • linear or surface loads can be applied on the sealing web 32 which rests in the region of the canal base 16. Thereby, for example in the case of damage occurring in the course of time, it can be prevented that the sealing web 32 detaches itself from the bottom and ascends, which can lead to damage for example in the case of barrages situated below, or even power plants.
  • An application of a linear load presents itself in particular for the region in which the lateral bank inclines 14, 18 continue into the canal base 16, i.e. in the intersecting region.
  • Fig. 3 in the diagrammatic illustration of the finished, i.e. sealed state, it is shown that the sealing web 32 is fixed and held in so-called embedding trenches 52 on the lateral embankments of the canal 12.
  • a wire-mesh fence 54 is laid beginning from the embedding trench 52 up to approximately 1 to 2 m below the water level 22.
  • round steel is included in the lower region and the wire-mesh fence 54 is thereby weighted down.
  • the wire-mesh fence 54 also serves as an exit for persons or wild animals out of the canal.
  • a further variant embodiment for fastening the sealing components consists in that these are fastened by means of flat iron bars by pegging on or by means of anchors.
  • a protective system can be applied, consisting of a surface stabilization blanket, wire-mesh fence and a 2 to 3 cm thick sprayed concrete layer.
  • the sealing which is described is suitable both for the renovation of an existing canal or watercourse and also for the sealing of a canal which is to be newly constructed, in which finished parts must be flooded directly following the introduction into a pit, in order to prevent a lifting due to lifting forces in the adjoining ground.
  • An essential advantage of the described method consists in that the canal does not have to be emptied for sealing.
  • a plastic sealing web is used as a sealing web, the existent water is also not contaminated by the introduction of the sealing web, because this behaves in a neutral manner.
  • the high laying performance results in a short construction period and takes place as far as possible independently of the weather, particularly when an additional roofing is provided on the working platform.
  • the sealing according to the invention is distinguished by the testability of the weld seams. It is also to be emphasized that owing to the relatively thin sealing material as a whole a smaller material transport volume is necessary, which means a saving of resources and a reduced impact on the environment. With sufficiently large cross- sections of the canal, the material transport can take place for example via the canal itself by ships or floating pontoons which are drawn along the bank region. Furthermore, generally the sealing web can be laid with a protective layer situated therebeneath directly onto the base surface of the canal, without a clearing of sediment being necessary here.
  • a further advantage of the sealing according to the invention consists in that the cross-section of the canal is not constricted, so that the canal, in the sealed state, has the same water throughput with the same depth of water, so that for example a re-calculation of the setting parameters of weir systems etc. regulating the canal is not necessary.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Environmental & Geological Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Revetment (AREA)

Abstract

L'invention vise à rendre disponible un scellement fiable et de prix favorable de canaux (12) ou d'autres cours d'eau dans un état aquifère. A cet effet, l'invention porte sur une plate-forme de travail de canal et sur un procédé de scellement, dans lequel procédé les étapes suivantes sont réalisées : la disposition d'une surface de travail (26) au-dessus de la surface de l'eau (22) du canal (12) qui doit être scellé, la surface de travail (26) traversant au moins une partie de la région aquifère du canal (12) ; le déploiement d'un premier film de scellement (32a) d'un matériau de scellement en forme de film (32) avec au moins un bord sur la surface de travail (26) ; le déploiement d'un second film de scellement (32b) du matériau de scellement (32) sur la surface de travail (26), le second film de scellement (32b) étant déployé au moins avec un bord sur la surface de travail (26) et étant aligné avec le premier film de scellement (32a) ; la liaison d'au moins une région partielle des bords jointifs des premier et second films de scellement (32a, 32b) sur la surface de travail (26) ; le déplacement de la surface de travail (26) par rapport aux films de scellement (32a, 32b) qui sont reliés l'un à l'autre dans la direction longitudinale du canal (12), les films de scellement reliés (32a, 32b) étant fixés en position par rapport au canal (12), et les films de scellement (32) restant avec leurs régions de bord non encore reliées sur la plate-forme de travail de canal ; et l'abaissement de la région libre des films de scellement (32) qui sont reliés l'un à l'autre sur la base de canal (16).
EP09782282.9A 2008-09-12 2009-08-27 Scellement de canaux Active EP2321467B1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US9644508P 2008-09-12 2008-09-12
DE202008014492U DE202008014492U1 (de) 2008-09-12 2008-09-12 Abdichtung von Kanälen
DE102008047008.2A DE102008047008B4 (de) 2008-09-12 2008-09-12 Abdichtung von Kanälen
PCT/EP2009/061074 WO2010028959A1 (fr) 2008-09-12 2009-08-27 Scellement de canaux

Publications (2)

Publication Number Publication Date
EP2321467A1 true EP2321467A1 (fr) 2011-05-18
EP2321467B1 EP2321467B1 (fr) 2015-10-07

Family

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Application Number Title Priority Date Filing Date
EP09782282.9A Active EP2321467B1 (fr) 2008-09-12 2009-08-27 Scellement de canaux

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Country Link
EP (1) EP2321467B1 (fr)
DE (2) DE202008014492U1 (fr)
WO (1) WO2010028959A1 (fr)

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IT1402028B1 (it) * 2010-10-14 2013-08-28 Gsi Geosyntec Invest B V Metodo e dispositivo per il drenaggio di acqua infiltrata in strutture idrauliche.
DE102011108222B3 (de) * 2011-07-21 2012-07-26 Hagn Umwelt Gmbh Kanalabdichtung
DE102013200319A1 (de) 2012-12-04 2013-05-23 Bilfinger Construction GmbH Verfahren und eine Vorrichtung zur Sanierung eines Kanals
DE102013000860A1 (de) 2013-01-18 2014-07-24 Hagn Umwelttechnik Gmbh Kanalabdichtung
DE102013000861B4 (de) 2013-01-18 2014-08-07 Hagn Umwelttechnik Gmbh Kanalabdichtungssystem und Verfahren zum Abdichten eines Kanals in wasserführendem Zustand
DE202013000503U1 (de) 2013-01-18 2013-01-29 Hagn Umwelttechnik Gmbh Kanalabdichtung
DE102013210341A1 (de) 2013-06-04 2014-12-04 Hagn Umwelttechnik Gmbh Abdichtungssystem
DE102016006194A1 (de) * 2016-05-19 2017-11-23 Michael Noritzsch Kunststoffdichtungsbahn zum Abdichten eines stehenden oder fließenden Gewässers

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DE2533752C3 (de) * 1975-07-29 1979-01-04 Colcrete-Bau Gmbh & Co Kg, 2902 Rastede Vorrichtung zum Einbauen von Vergußmassen unter Wasser in den Spalten einer Steinpacklage
DE2947851C2 (de) * 1979-11-28 1983-12-01 Philipp Holzmann Ag, 6000 Frankfurt Verfahren zum Verlegen einer Tonmasse auf Kanalsohlen od.dgl. sowie Vorrichtung zur Durchführung des Verfahrens
DE3442310A1 (de) * 1984-11-20 1986-05-22 Horst van der 2900 Oldenburg Linde Verfahren und vorrichtung zum verlegen von gitterartigen schutzmatten, insbesondere schutzmatten fuer gewaessersohlen, ufer und kuesten
US4954019A (en) * 1989-08-18 1990-09-04 Giroux D William Method and apparatus for lining a canal
DE4033506C2 (de) * 1990-10-21 1994-04-07 Naue Fasertechnik Verfahren und Vorrichtung zur Unterwasser-Verlegung von Geotextilien in Gewässern
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Also Published As

Publication number Publication date
DE102008047008B4 (de) 2016-04-28
DE102008047008A1 (de) 2009-07-30
WO2010028959A1 (fr) 2010-03-18
DE202008014492U1 (de) 2009-02-19
EP2321467B1 (fr) 2015-10-07

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