EP1067243B1 - Catchment basin for above ground water and construction method thereof - Google Patents
Catchment basin for above ground water and construction method thereof Download PDFInfo
- Publication number
- EP1067243B1 EP1067243B1 EP00112926A EP00112926A EP1067243B1 EP 1067243 B1 EP1067243 B1 EP 1067243B1 EP 00112926 A EP00112926 A EP 00112926A EP 00112926 A EP00112926 A EP 00112926A EP 1067243 B1 EP1067243 B1 EP 1067243B1
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- basin
- sealing
- trench
- ballast
- water
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- 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
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D31/00—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
- E02D31/10—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution against soil pressure or hydraulic pressure
- E02D31/12—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution against soil pressure or hydraulic pressure against upward hydraulic pressure
Definitions
- the invention relates to a trough-shaped tank sealed with a plastic sealing strip for the retention of surface water in a region with a high groundwater level, wherein the sealing sole is below the groundwater level and to a method for producing such a basin.
- the invention has the object to provide a way to reduce the labor and cost overhead for both the establishment, as well as for the maintenance of such a Storm.
- this object is achieved by a trough-shaped retention basin according to claim 1.
- a method for producing such a basin is specified in claim 7.
- the basic idea of the invention is to arrange the ballasting of the pelvic seal to prevent the effects of buoyancy by the groundwater in an empty tank not within, but below the actual basin in a likewise sealed against the groundwater tub.
- the ballast material used to fill this tub is so on the one hand by the seal against the groundwater and on the other hand by the actual pelvic seal as enclosed in a pillow so that it stays dry and does not lose its function as ballast.
- no reduction for buoyancy needs to be recognized, which significantly reduces the required excavation depth for this area.
- the ballast bed can not be contaminated by some contaminated surface water.
- the tank seal As a double seal of two plastic sheets with an intermediate layer of a permeable material, in the intermediate layer, a system of piping with self-starting pumps is installed, which is used to control a liquid flow either serve from the outer or the inner region of the basin (US-A 5 080 528).
- the inner geomembrane is covered in the usual way by a layer of clay as a mechanical protection, resulting in basins in areas with high groundwater level to the disadvantages described above.
- the invention opens up a further, very advantageous possibility for the production of such a basin, namely without the need for lowering the groundwater level. So it is readily possible to make the excavation for the pool and located below the pool basin for the ballast bed under water, interpret the plastic waterproofing membrane for sealing the tub against the groundwater on the water-filled pit and they by continuous bed of ballast material under displacement to lower the water filling the pit. The profile of the basin to be produced is then formed in the ballast bed, so that the actual tank seal can be installed and installed in the dry.
- the invention also opens up a further advantage, namely when, as filling material for the ballast bed for buoyancy protection, slag from electric steel works, so-called electric furnace slag with a weight greater 30 kN / m 3 is used. Electric furnace slag contains about 30 to 35% iron and is therefore very heavy. Due to this composition, this material has a 50% higher installation density than mineral material. This results in the advantage that the required excavation can be considerably reduced compared to a conventional ballast of mineral material; This saves about one third of the otherwise necessary excavation depth.
- a surface with a geometrically simple shape extending beyond the later basin size is first excavated about 1 to 2 m beyond the planned basin sole 2, so that a trough 3 with a sole 4 and slopes 5 is created, whose surfaces are smoothed.
- the resulting excavation space 6 fills up to the natural groundwater level 7 with water.
- precaution septic pipes are designed and provided suction hoses for pumps.
- a sealing tarpaulin 8 produced at the factory or in addition to the basin 1 to be made of flexible plastic sealing strips welded together is pulled over the excavation space 6 and provisionally secured.
- stabilizing elements 10 can be designed which prevent the first ballast layer from slipping off during the subsequent application of the ballast fill 11 (FIG. 2).
- the ballast layer 11 is first installed on the excavation floor 4 and then along the slopes 5 with an excavator, which has a boom with appropriate range.
- the groundwater displaced by the progressive ballast pushes itself outwards with a surface of rolligem material; in a substrate made of cohesive material, it is sucked by pumps through the previously laid below the sealing tarpaulin 8 seepage pipes and fed into a receiving water. Lies the sealing tarpaulin 8 under the weight of the ballast bed 11 over the entire surface of the substrate 4, 5, the pumps can be switched off and removed.
- a closed tube 13 is laid in the region of a maintenance and inspection shaft 12 along the embankment and initially secured provisionally outside the sealing tarpaulin 8; if necessary, it is used to extract water which has penetrated approximately into the ballast bed 11.
- a second short piece of pipe 14 is used to ventilate the ballast 11, especially when water is sucked out.
- the inlet pipe 15 to the basin and the outlet pipe 16 are guided above the groundwater level 7 through the sealing tarpaulin 8 and sealed in a conventional manner.
- embankment surfaces 5 can this be made around the pipes around concrete collars and the surfaces are smoothed.
- the sealing tarpaulin 8 is fastened in a manner known per se with clamping rails and sealing strip.
- the outer edge of the sealing tarpaulin 8 is laid in an anchor trench 17, which is then filled and the filling material is compacted.
- a circumferential wall 18 is arranged, which should be about 15 cm higher than the rear edge of the sealing tarpaulin 8 in the anchor trench 17. This avoids that dammed water from the area under the tank seal 20th can seep.
- the desired shape of the retention basin 1 is prepared with additional bulk material and covered to equalize the surfaces with similar sand material.
- On the sand layer is then laid as a lower protective layer 19 for the pelvic seal a non-woven mat with 500 g / m 2 basis weight.
- the plastic sealing strip of the tank seal 20 is welded to the sealing tarpaulin 8 behind the surrounding earth ramp 18 at the edge of the pool by manual welding (21) in order to prevent the ingress of leachate.
- the pelvic seal 20 of the retention basin 1 is protected towards the pelvic side in a manner known per se by nonwoven mats 22 against damage by abrasion or sharp-edged stones.
- a clawing mat 23 can be laid to stabilize the Bodenandeckung 24 at least in the field of embankments.
- an approximately 10 cm thick concrete layer 25 is installed as a protection against mechanical stress during maintenance in a honeycomb, serving as formwork mat.
- the slopes are covered with a 10 to 15 cm thick bottom layer 24 and then landscaped.
- the pool drain 16 is carried out in a conventional manner via perforated pipes 26, which are coated with filter fabrics and nonwoven fabric and connect to tight pipes 27.
- the pipes 26 are mounted at half the depth of the basin 1 on plastic supports; they can be flowed on from all sides, which reduces the flow velocity in the basin and thus serves the sludge retention.
- This construction can be maintained without much effort; in case of damage only small amounts of contaminated material have to be disposed of.
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- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Hydrology & Water Resources (AREA)
- Mechanical Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Sewage (AREA)
- Processing Of Solid Wastes (AREA)
- Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
- Transmission Of Braking Force In Braking Systems (AREA)
- Aftertreatments Of Artificial And Natural Stones (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
Description
Die Erfindung bezieht sich auf ein wannenförmiges, mit einer Kunststoffdichtungsbahn gedichtetes Becken für die Rückhaltung von Oberflächenwasser in einem Gebiet mit hohem Grundwasserstand, bei dem die Abdichtungssohle unterhalb des Grundwasserspiegels liegt sowie auf ein Verfahren zum Herstellen eines solchen Beckens.The invention relates to a trough-shaped tank sealed with a plastic sealing strip for the retention of surface water in a region with a high groundwater level, wherein the sealing sole is below the groundwater level and to a method for producing such a basin.
Das von Straßen oder sonstigen befestigten Verkehrsflächen ablaufende Wasser gilt rechtlich als Abwasser, das als solches zu behandeln ist. Um den stoßweisen Ablauf von nach einem Regenereignis ablaufendem Oberflächenwasser zu vergleichmäßigen, werden Rückhalte- und/oder Abscheidebecken benützt, die entweder als Becken aus Stahlbeton oder auch als mit Kunststoffdichtungsbahnen abgedichtete, wannenartige Erdbecken ausgeführt werden. Solche Becken dienen zur Speicherung der zulaufenden Wassermengen und zu deren gedrosselter Ableitung in eine Kläranlage oder in einen Vorfluter, als Abscheidebecken auch zur Reinigung des Wassers von Schwebstoffen und abscheidbaren Flüssigkeiten.The water drained from roads or other paved traffic areas is legally regarded as waste water, which must be treated as such. In order to equalize the intermittent flow of running after a rain event surface water retention and / or separation basins are used, which are designed either as basins made of reinforced concrete or as sealed with plastic waterproofing, trough-like basins. Such basins are used to store the inflowing amounts of water and their throttled discharge into a sewage treatment plant or in a receiving water, as a separating basin and for cleaning the water of suspended solids and separable liquids.
Bei der Anlage von Erdbecken in Gebieten mit hohem Grundwasserstand, wie in Flussauen, an Seeufern oder in der Nähe von Moorgebieten, müssen zur Herstellung besondere Maßnahmen ergriffen werden, um die als Beckendichtung verwendeten Kunststoffdichtungsbahnen im Trockenen verlegen und verschweißen zu können. Dazu muss durch Brunnenanlagen mit Pumpen, gegebenenfalls nach Umschließung der Baustelle mit Spundwänden, der Grundwasserspiegel bis unter die Beckensohle abgesenkt werden.In the construction of basins in areas with a high groundwater level, such as river meadows, lake shores or near marshes, special measures must be taken to manufacture the waterproofing membranes used as a pool seal in dry conditions and to weld them. For this purpose, the groundwater level must be lowered to below the bottom of the basin by means of wells with pumps, possibly after enclosing the construction site with sheet piles.
Wird ein solches Becken für Wartungsarbeiten entleert, dann muss die Beckendichtung gegen Auftrieb gesichert werden. Dies geschieht meist durch den Einbau dicker Bodenschichten, deren Kubatur noch vergrößert werden muss, weil das Material sich im Wasser befindet, dadurch unter Auftrieb steht und deshalb erheblich leichter ist als in trockenem Zustand. Dies bedingt den teuren Aushub einer großen Menge nassen Bodens, der meist beseitigt werden muss. Als Ersatzboden müssen Kiese geliefert werden. Bei Unfällen mit Chemikalien oder mit kontaminiertem Löschwasser nach Fahrzeugbränden werden solche lediglich als Ballast dienenden Bodenschichten verunreinigt; sie müssen dann mit hohen Kosten als Sondermüll beseitigt werden. Auch bei der Entleerung des Beckens für Wartungsarbeiten muss der Grundwasserspiegel immer bis auf die Höhe der Abdichtungssohle abgesenkt werden.If such a basin is emptied for maintenance, then the tank seal must be secured against buoyancy. This usually happens through the Installation of thick soil layers, the cubature of which must be increased because the material is in the water, is therefore under buoyancy and therefore much lighter than in a dry state. This requires the expensive excavation of a large amount of wet soil, which usually needs to be eliminated. Kiese must be delivered as a replacement floor. In the case of accidents involving chemicals or contaminated extinguishing water after vehicle fires such soil layers serving only as ballast are contaminated; they must then be disposed of at high cost as hazardous waste. Even when emptying the pool for maintenance work, the groundwater level must always be lowered to the level of the waterproofing floor.
Vor diesem Hintergrund liegt der Erfindung die Aufgabe zugrunde, eine Möglichkeit zu schaffen, um den arbeits- und kostenmäßigen Aufwand sowohl für die Errichtung, als auch für die Wartung eines solchen Erdbeckens zu verringern.Against this background, the invention has the object to provide a way to reduce the labor and cost overhead for both the establishment, as well as for the maintenance of such a Storm.
Gemäß der Erfindung wird diese Aufgabe durch ein wannenförmiges Rückhaltebecken gemäß Anspruch 1 gelöst.According to the invention, this object is achieved by a trough-shaped retention basin according to
Ein Verfahren zur Herstellung eines solchen Beckens ist in Anspruch 7 angegeben.A method for producing such a basin is specified in
Vorteilhafte Weiterbildungen ergeben sich aus den jeweiligen Unteransprüchen.Advantageous developments emerge from the respective subclaims.
Der Grundgedanke der Erfindung besteht darin, die Ballastierung der Beckenabdichtung zur Verhinderung gegen die Wirkungen des Auftriebs durch das Grundwasser bei leerem Becken nicht innerhalb, sondern unterhalb des eigentlichen Beckens in einer ebenfalls gegenüber dem Grundwasser gedichteten Wanne anzuordnen. Das zur Füllung dieser Wanne verwendete Ballastmaterial ist so einerseits durch die Abdichtung gegenüber dem Grundwasser und andererseits durch die eigentliche Beckendichtung wie in einem Kissen eingeschlossen, so dass es trocken bleibt und seine Funktion als Ballast nicht verliert. Dadurch braucht keine Abminderung für Auftrieb angesetzt zu werden, wodurch sich für diesen Bereich die erforderliche Aushubtiefe deutlich verringert. Schließlich kann die Ballastschüttung nicht durch etwa kontaminiertes Oberflächenwasser verunreinigt werden.The basic idea of the invention is to arrange the ballasting of the pelvic seal to prevent the effects of buoyancy by the groundwater in an empty tank not within, but below the actual basin in a likewise sealed against the groundwater tub. The ballast material used to fill this tub is so on the one hand by the seal against the groundwater and on the other hand by the actual pelvic seal as enclosed in a pillow so that it stays dry and does not lose its function as ballast. As a result, no reduction for buoyancy needs to be recognized, which significantly reduces the required excavation depth for this area. Finally, the ballast bed can not be contaminated by some contaminated surface water.
Bei einem Erdbecken der eingangs angegebenen Art ist es zwar schon bekannt geworden, die Beckendichtung als Doppeldichtung aus zwei Kunststoffbahnen mit einer Zwischenschicht aus einem durchlässigen Material auszubilden, wobei in der Zwischenschicht ein System von Rohrleitungen mit selbststartenden Pumpen installiert ist, die zur Regelung einer Flüssigkeitsströmung entweder aus dem äußeren oder dem inneren Bereich des Beckens dienen (US-A 5 080 528). Die innere Dichtungsbahn ist in üblicher Weise durch eine Lehmschicht als mechanischer Schutz abgedeckt, was bei Becken in Gebieten mit hohem Grundwasserstand zu den eingangs beschriebenen Nachteilen führt.In a pond of the type described above, although it is already known to form the tank seal as a double seal of two plastic sheets with an intermediate layer of a permeable material, in the intermediate layer, a system of piping with self-starting pumps is installed, which is used to control a liquid flow either serve from the outer or the inner region of the basin (US-A 5 080 528). The inner geomembrane is covered in the usual way by a layer of clay as a mechanical protection, resulting in basins in areas with high groundwater level to the disadvantages described above.
Die Erfindung eröffnet eine weitere, sehr vorteilhafte Möglichkeit zur Herstellung eines solchen Beckens, nämlich unter Verzicht auf eine Absenkung des Grundwasserspiegels. So ist es ohne weiteres möglich, den Aushub für das Becken und die unterhalb des Beckens befindliche Wanne für die Ballastschüttung unter Wasser vorzunehmen, die Kunststoffdichtungsbahn für die Abdichtung der Wanne gegenüber dem Grundwasser über der wassergefüllten Baugrube auszulegen und sie durch fortlaufende Schüttung des Ballastmaterials unter Verdrängung des die Baugrube füllenden Wassers abzusenken. Das Profil des herzustellenden Beckens wird dann in der Ballastschüttung ausgeformt, so dass die eigentliche Beckendichtung im Trockenen verlegt und eingebaut werden kann.The invention opens up a further, very advantageous possibility for the production of such a basin, namely without the need for lowering the groundwater level. So it is readily possible to make the excavation for the pool and located below the pool basin for the ballast bed under water, interpret the plastic waterproofing membrane for sealing the tub against the groundwater on the water-filled pit and they by continuous bed of ballast material under displacement to lower the water filling the pit. The profile of the basin to be produced is then formed in the ballast bed, so that the actual tank seal can be installed and installed in the dry.
Die Erfindung eröffnet aber noch einen weiteren Vorteil, nämlich dann, wenn als Füllmaterial für die Ballastschüttung zur Auftriebssicherung Schlacke aus Elektrostahlwerken, sogenannte Elektroofenschlacke mit einer Wichte größer 30 kN/m3 verwendet wird. Elektroofenschlacke enthält etwa 30 bis 35 % Eisen und ist deshalb sehr schwer. Infolge dieser Zusammensetzung hat dieses Material eine um 50 % höhere Einbaudichte als mineralisches Material. Daraus resultiert als Vorteil, dass die erforderlichen Aushubmengen gegenüber einer herkömmlichen Ballastierung aus mineralischem Material beträchtlich reduziert werden können; es wird hierdurch etwa ein Drittel der sonst notwendigen Aushubtiefe eingespart.However, the invention also opens up a further advantage, namely when, as filling material for the ballast bed for buoyancy protection, slag from electric steel works, so-called electric furnace slag with a weight greater 30 kN / m 3 is used. Electric furnace slag contains about 30 to 35% iron and is therefore very heavy. Due to this composition, this material has a 50% higher installation density than mineral material. This results in the advantage that the required excavation can be considerably reduced compared to a conventional ballast of mineral material; This saves about one third of the otherwise necessary excavation depth.
Die Erfindung wird nachstehend anhand der Zeichnung näher erläutert. Es zeigt
- Fig. 1
- einen Schnitt durch ein Rückhaltebecken nach der Erfindung und
- Fig. 2
- einen Ausschnitt aus Fig. 1 in größerem Maßstab.
- Fig. 1
- a section through a retention basin according to the invention and
- Fig. 2
- a section of Fig. 1 on a larger scale.
Zur Errichtung des in Fig. 1 in einem Querschnitt dargestellten Rückhaltebeckens 1 wird zunächst eine über die spätere Beckengröße hinausgehende Fläche mit geometrisch einfacher Form etwa 1 bis 2 m über die planmäßige Beckensohle 2 hinaus ausgehoben, so dass eine Wanne 3 mit einer Sohle 4 und Böschungen 5 entsteht, deren Oberflächen geglättet werden. Der hierdurch entstandene Aushubraum 6 füllt sich bis zum natürlichen Grundwasserspiegel 7 mit Wasser auf. Auf die Böschungen 5 werden vorsorglich Sickerrohre ausgelegt und Saugschläuche für Pumpen vorgesehen.For establishing the
Im nächsten Schritt wird eine werkseitig oder neben dem zu erstellenden Becken 1 hergestellte Abdichtungsplane 8 aus flexiblen, miteinander verschweißten Kunststoffdichtungsbahnen über den Aushubraum 6 gezogen und provisorisch gesichert. Anschließend wird eine Schutzschicht 9, z.B. eine Faservliesmatte aus miteinander vernähten Einzelbahnen, über die bereits verlegte Dichtungsplane 8 gezogen. Im Bereich der Wannensohle 4 können noch Stabilisierungselemente 10 ausgelegt werden, die beim nachfolgenden Aufbringen der Ballastschüttung 11 ein Abrutschen der ersten Ballastschicht verhindern (Fig. 2).In the next step, a sealing
Anschließend wird mit einem Bagger, der einen Ausleger mit entsprechender Reichweite besitzt, die Ballastschicht 11 zunächst auf der Aushubsohle 4 und sodann entlang der Böschungen 5 eingebaut. Das durch die fortschreitende Ballastierung verdrängte Grundwasser drückt sich bei einem Untergrund aus rolligem Material nach außen; bei einem Untergrund aus bindigem Material wird es von Pumpen durch die vorher unterhalb der Abdichtungsplane 8 verlegten Sickerrohre abgesaugt und in einen Vorfluter geleitet. Liegt die Abdichtungsplane 8 unter dem Gewicht der Ballastschüttung 11 vollflächig auf dem Untergrund 4, 5 auf, können die Pumpen abgeschaltet und entfernt werden.Subsequently, the
Zwischen dem Tiefpunkt der Abdichtungsplane 8 und dem Beckenrand wird im Bereich eines Wartungs- und Kontrollschachtes 12 entlang der Böschung ein geschlossenes Rohr 13 verlegt und außerhalb der Abdichtungsplane 8 zunächst provisorisch befestigt; es dient gegebenenfalls zur Absaugung von etwa in die Ballastschüttung 11 eingedrungenem Wasser. Ein zweites kurzes Rohrstück 14 dient der Belüftung der Ballastschüttung 11, vor allem dann, wenn Wasser abgesaugt wird.Between the low point of the sealing
Das Zulaufrohr 15 zum Becken sowie das Auslaufrohr 16 werden oberhalb des Grundwasserspiegels 7 durch die Abdichtungsplane 8 geführt und in an sich bekannter Weise gedichtet. In den Böschungsflächen 5 können hierzu um die Rohrleitungen herum Betonkragen hergestellt und die Oberflächen geglättet werden. Auf diesen Oberflächen wird die Abdichtungsplane 8 in an sich bekannter Weise mit Klemmschienen und Dichtungsband befestigt.The
Etwa 2 m außerhalb des Beckenrandes wird der Außenrand der Abdichtungsplane 8 in einem Ankergraben 17 verlegt, der anschließend verfüllt und das Füllmaterial verdichtet wird. Zwischen dem Ankergraben 17 und dem Rand der Aushubwanne 4 ist ein umlaufender Wall 18 angeordnet, der etwa 15 cm höher sein soll als der rückwärtige Rand der Abdichtungsplane 8 im Ankergraben 17. Damit wird vermieden, dass aufgestautes Wasser etwa aus dem Gelände unter die Beckendichtung 20 sickern kann.About 2 m outside the edge of the pool, the outer edge of the sealing
Anschließend wird mit zusätzlichem Schüttmaterial die gewünschte Form des Rückhaltebeckens 1 hergestellt und zur Egalisierung der Flächen mit gleichartigem Sandmaterial abgedeckt. Auf die Sandschicht wird dann als untere Schutzschicht 19 für die Beckendichtung eine Faservliesmatte mit 500 g/m2 Flächengewicht verlegt.Subsequently, the desired shape of the
Anschließend erfolgt der Einbau der Beckendichtung 20. Sie besteht zweckmäßig ebenfalls aus miteinander verschweißten Kunststoffdichtungsbahnen aus modifiziertem Polyethylen oder thermoplastischen Olefinen, die eine ausreichende Beständigkeit gegen die im Straßenabwasser nach Unfällen vorkommenden Chemikalien besitzen. Die Beckendichtung 20 wird an die Rohrleitungen des Zu-und Ablaufs 15 bzw. 16 dicht angeschlossen. Anschließend wird außerhalb des Beckens 1 ein Kontroll- und Wartungsschacht 12 für den Ablauf erstellt. An diesen werden das Entwässerungsrohr 13 sowie das Belüftungsrohr 14 der Ballastschicht 11 angeschlossen.It is expediently also made of welded together plastic gaskets made of modified polyethylene or thermoplastic olefins, which have a sufficient resistance to the occurring in the street sewage after accidents chemicals. The
Die Kunststoffdichtungsbahn der Beckendichtung 20 wird mit der Abdichtungsplane 8 hinter dem umlaufenden Erdwall 18 am Beckenrand durch Handschweißung verschweißt (21), um den Zutritt von Sickerwasser zu verhindern.The plastic sealing strip of the
Die Beckendichtung 20 des Rückhaltebeckens 1 wird zur Beckenseite hin in an sich bekannter Weise durch Faservliesmatten 22 gegen Beschädigung durch Abrieb oder scharfkantige Steine geschützt. Darüber kann eine Krallmatte 23 zur Stabilisierung der Bodenandeckung 24 zumindest im Bereich der Böschungen verlegt werden. Auf der Beckensohle 2 wird als Schutz gegen die mechanische Beanspruchung bei Wartungsarbeiten eine etwa 10 cm dicke Betonschicht 25 in eine wabenartige, als Schalung dienende Matte eingebaut. Schließlich werden die Böschungen mit einer etwa 10 bis 15 cm dicken Bodenschicht 24 bedeckt und anschließend begrünt.The
Der Beckenablauf 16 erfolgt in an sich bekannter Weise über gelochte Rohrleitungen 26, welche mit Filtergeweben und Vliesstoff umhüllt sind und an dichte Rohrleitungen 27 anschließen. Die Rohrleitungen 26 sind in halber Tiefe des Beckens 1 auf Kunststoffstützen montiert; sie können so von allen Seiten angeströmt werden, wodurch sich die Fließgeschwindigkeit im Becken verringert und damit dem Schlammrückhalt dient.The
Diese Konstruktion kann ohne großen Aufwand gewartet werden; im Schadensfall sind nur geringe Mengen kontaminierten Materials zu entsorgen.This construction can be maintained without much effort; in case of damage only small amounts of contaminated material have to be disposed of.
Claims (9)
- A trench-shaped basin sealed with a plastics membrane for retaining surface water in an area with a high ground-water level,
in which the sealing bed is situated below the ground-water table and in which ballast material is provided against the actions of the uplift on the basin seal caused by the ground water when the basin is empty,
characterised in that
the ballast material consists of a filling (11) of electric furnace clinker, which is disposed under the basin (1) in a trench (3) which, in turn, is sealed with respect to the ground water by a sealing tarpaulin (8), and in that
the sealing tarpaulin (8) for the sealing of the trench (3) and a basin seal (20) of the basin (1) are fluidtightly joined together at the edges, in particular welded, with inclusion of the ballast material. - A trench-shaped basin according to Claim 1, characterised in that the edges of the sealing tarpaulin (8) are disposed in an anchor ditch (17) extending outside the basin.
- A trench-shaped basin according to Claim 2, characterised in that a circumferential barrier (18), over which the sealing tarpaulin (8) extends, is disposed between the anchor ditch (17) and the edge of the trench (3).
- A trench-shaped basin according to Claim 3, characterised in that the sealing tarpaulin (8) for sealing the trench (3) and the basin seal (20) of the basin (1) are joined together in the vicinity of the barrier (18).
- A method of constructing a retention basin according to Claims 1 to 4, characterised by the following method steps:- the excavation (6) for the retention basin (1) to be constructed is excavated without enclosing or lowering the ground-water table (7),- a sealing tarpaulin (8) is laid over the excavated area (4,5) as a ground seal and covered with ballast material (11), consisting of a filling of electric furnace clinker, until it has sunken down to the excavation bed (4) while displacing the water situated in the excavation (6),- the profile of the retention basin (1) to be constructed is formed in the surface of the ballast material (11),- a sealing membrane is laid as a basin seal (20) over the surface of the ballast material (11),- the outer edges of the sealing tarpaulin (8) and the basin seal (20) are fluidtightly joined together, in particular welded, with inclusion of the ballast material (11).
- A method according to Claim 5, characterised in that stabilising elements (10) for fixing the ballast material (11) are laid on the ground-sealing membrane (8) at least in the vicinity of the basin bed (4).
- A method according to any one of Claims 5 to 6, characterised in that a protective and/or ballast layer is applied to the basin bed (2) and/or the sloping side walls of the basin (1).
- A method according to Claim 7, characterised in that the protective and/or ballast layer comprises a concrete slab (25) in the vicinity of the basin bed (2).
- A method according to Claim 8, characterised in that the protective and/or ballast layer comprises soil material (24) in the vicinity of the sloping walls.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19930699A DE19930699A1 (en) | 1999-07-05 | 1999-07-05 | Pool for the retention of surface water |
| DE19930699 | 1999-07-05 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP1067243A2 EP1067243A2 (en) | 2001-01-10 |
| EP1067243A3 EP1067243A3 (en) | 2001-05-23 |
| EP1067243B1 true EP1067243B1 (en) | 2006-09-06 |
Family
ID=7913528
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP00112926A Expired - Lifetime EP1067243B1 (en) | 1999-07-05 | 2000-06-20 | Catchment basin for above ground water and construction method thereof |
Country Status (7)
| Country | Link |
|---|---|
| EP (1) | EP1067243B1 (en) |
| AT (1) | ATE338851T1 (en) |
| CZ (1) | CZ292305B6 (en) |
| DE (2) | DE19930699A1 (en) |
| DK (1) | DK1067243T3 (en) |
| ES (1) | ES2269044T3 (en) |
| HU (1) | HU227023B1 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102011012777B4 (en) | 2011-03-01 | 2015-12-24 | Yevda Yakubov | Device and method for preventing flooding |
| DE202011003381U1 (en) | 2011-03-01 | 2013-01-16 | Yevda Yakubov | Device for preventing flooding |
| NL1040236C2 (en) * | 2013-06-03 | 2014-12-08 | Haner Infra Innovatie B V | TUNNEL SETUP. |
| US20210230824A1 (en) | 2018-06-06 | 2021-07-29 | Yevda Yakubov | Device and method for preventing floods |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4407606A (en) * | 1979-11-13 | 1983-10-04 | Larsen Ole J F | Method and apparatus for producing and laying a ballasted mat for ground stabilization |
| US5080528A (en) * | 1981-04-09 | 1992-01-14 | Finic, B.V. | Method and apparatus for impounding fluids |
| JPS6058330B2 (en) * | 1982-12-06 | 1985-12-19 | シ−アイ化成株式会社 | Waterproof sheet installation method |
| DE4002090A1 (en) * | 1990-01-25 | 1991-08-01 | Fred Dipl Ing Petersen | Treating eutrophic stagnant surface water - by covering the sediment with a semipermeable film to encapsulate pptd. phosphate |
| IT1279074B1 (en) * | 1995-11-24 | 1997-12-04 | Sibelon Srl | SYSTEM FOR THE REALIZATION OF WATERPROOFING OF HYDRAULIC WORKS WITH RIGID SHEETS IN SYNTHETIC MATERIAL |
-
1999
- 1999-07-05 DE DE19930699A patent/DE19930699A1/en not_active Ceased
-
2000
- 2000-06-20 EP EP00112926A patent/EP1067243B1/en not_active Expired - Lifetime
- 2000-06-20 ES ES00112926T patent/ES2269044T3/en not_active Expired - Lifetime
- 2000-06-20 DE DE50013420T patent/DE50013420D1/en not_active Expired - Lifetime
- 2000-06-20 AT AT00112926T patent/ATE338851T1/en active
- 2000-06-20 DK DK00112926T patent/DK1067243T3/en active
- 2000-06-29 CZ CZ20002460A patent/CZ292305B6/en not_active IP Right Cessation
- 2000-07-04 HU HU0002563A patent/HU227023B1/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| HU227023B1 (en) | 2010-05-28 |
| ATE338851T1 (en) | 2006-09-15 |
| EP1067243A2 (en) | 2001-01-10 |
| DE19930699A1 (en) | 2001-01-11 |
| DK1067243T3 (en) | 2007-01-15 |
| CZ292305B6 (en) | 2003-09-17 |
| DE50013420D1 (en) | 2006-10-19 |
| EP1067243A3 (en) | 2001-05-23 |
| CZ20002460A3 (en) | 2001-02-14 |
| ES2269044T3 (en) | 2007-04-01 |
| HUP0002563A2 (en) | 2001-04-28 |
| HU0002563D0 (en) | 2000-09-28 |
| HUP0002563A3 (en) | 2002-03-28 |
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