EP1125029B1 - Infiltration drainage fitting or infiltration drainage conduit - Google Patents

Abstract

The invention concerns a method wherein an infiltration drainage conduit is produced by using oblong water-permeable textile bags (11), which are filled with a light loose material (26), forming cavities capable of being run through by a flow, in particular cellular glass chunks, and which is placed in a trench (21). The base of the trench can be previously sealed with a watertight sheet or mat (23). The infiltration water flows through the cavities forming about 30 % of the total volume, between the cellular glass chunks.

Description

Technical field of the invention

The invention relates to a Soak packing or drainage pipe with a water-flowable cavities forming bulk material according to the Preamble of claim 1.

State of the art

So far, a trickle pack has fulfilled the task, over a larger one Area accumulating water on the shortest possible way a water-permeable Layer or a pipeline, in particular to supply a seepage and thereby To ensure the accessibility of the pipeline for the water as permanently as possible. A seepage with drainage pipe and trickle packing will usually created as follows. First a ditch is dug. In the ditch becomes one Concrete banquet created and inserted a PVC seepage pipe. About it becomes a loose delivered gravel pack poured and this at least laterally and above to Protected earth with a fleece. Is it about the water through the It is possible to direct seepage into a deeper, water-permeable layer to dispense with the banquet and the PVC pipe.

It is also known to transport light bulk material in textile containers. These containers are opened at the construction site and the bulk material, e.g. when Thermal insulation layer, spread under a foundation plate, or occasionally also poured as a relatively expensive trickle pack in a ditch.

These methods for creating a seepage have the disadvantage that e.g. a trench excavated too wide can be filled with more bulk material needs, as would be necessary for the seepage. The increased material requirement suggests poorly accessible construction sites especially in the transport costs to book. In addition, the bulk goods must reach the ditch with a truck or a crane transported and poured into the ditch there. Should the bed smaller than the trench width can be created, as much as possible at the same time soil and seepage bulk materials are filled, with the separation of the two fillings through a fleece then only very difficult to reach. Another disadvantage is the relatively high price for a drainage line, which essentially derives from that a concrete banquet and a drainage pipe must be installed to the collect and carry away accumulating water.

From GB-A-2 294 856 a drainage material is known which is bound from Foam glass chunks of grain sizes 5 to 13 mm and / or 2.5 to 5 mm. When Binder is an epoxy resin proposed. The grain size must not exceed the proposed to be 5 to 13 mm and must have a certain mixture so that The drainage material is not blocked by sand.

From US-A-4,983,068 a filled with broken glass bag is known for the construction of leaks is suitable and which the features of the generic term of the Claim 1 has. and which comprises the features of the preamble of claim 1. The bag has a tubular cover made of geotextile and is filled with broken glass waste. The glass is e.g. of bottles, lidded glasses and other disposable glass containers. It is only freed from food residues, coarse broken and the rather large glass fragments are in the tubular bag filled. The glass is shattered and sieved so far that the fragments are smaller than about 4 cm (1 ½ inch) and the through the 0.175 mm wide stitches of a fine Siebs (US Standard No. 100) falling proportion is not greater than 2 percent by weight. The Geotextile must be so thick that the shards can not easily pierce it.

Object of the invention

It is an object of the invention to provide a means with which makes the construction process cheaper and simpler when creating a drainage pipe can be. It should minimize the amount of material to be installed and the Ensuring a separation between soil and seepage packing is facilitated become. In particular, the creation of a banquet and the laying of a Seepage pipe be made avoidable.

Description of the invention

This object is solved by the features of patent claim 1. For the production of a seepage is the light bulk material in water-permeable container, especially bags, filled and then with light bulk material filled container on the introduced construction site. This can reduce the amount of bulk material be reduced, because the volume of the bulk material and the shape of this volume is also in the installed state primarily by the size and shape of the Container defined and not by the shape of the excavation. For light bulk goods The sacks or containers must be less resistant to tearing than gravel. Are the containers filled with light bulk material, they are also suitable for installation Size still easy to load, transportable and manageable on the construction site.

To come as a wall for the water-permeable container woven or non-woven textiles, especially so-called geotextiles, which are specially designed for installation in the Soil are provided, in question.

Advantageously, a water-impermeable layer is introduced between the containers and the bottom of the excavated volume. As a result, the substrate can be spared from wetting. The impermeable
Layer forms a gutter under the tank or bag of silt. Advantageously, the light bulk material is factory-filled in containers and delivered in the containers to the site. The water-impermeable layer can also be pulled up at the trench wall.

According to the invention broken chunks of vitrified and foamed Material filled as light bulk in the container. Glazed, foamed and then broken material has as a fill up to 35% gaps. The reason for this is the interlocking of the chunks. Thanks to the porosity of Fracture surfaces easily interlock the corners and edges on these surfaces and it remains large spaces between the foam glass lumps open. Foam glass gravel Therefore, it has a significantly higher permeability to gravel. thanks the high permeability of foam glass ballast, the cross section or the Volume of the container and, consequently, the weight of the filled container be kept low.

In certain cases, a reinforcement is introduced into the container. Such reinforced containers are still easy to handle. With the laying or Positions reinforced tank is also laid a reinforcement at the same time. Conveniently, in container tanks reinforced by the contents Pouring over with a liquid and hardenable mass, in particular Cement slurry, bound. The sludge flows through the cavities and sticks to the Bulk and the reinforcement together, so that the container is stiff, and protects the reinforcement from corrosion. Even with unreinforced sacks can a Binding of the bulk material be expedient.

A flat seepage is advantageously created by elongated containers be juxtaposed with the long sides. However, it can also be flat Containers are manufactured and laid. A seepage line, on the other hand, will be beneficial created by elongated containers are joined with the short sides in a row. The abutting containers are advantageously interconnected. The Connection ensures the connection and thus the continuity of the Soak pipe or seeping layer.

In a trickle or seepage with a water-flowable voids forming bulk material is the bulk material in filled with textile containers. Textile containers are particularly useful when due to the low specific gravity of the bulk material volume and weight of the full container stand in a favorable relationship. Such containers are can be filled at the factory, can be loaded and transported as general cargo and can be delivered without further processing as seeping pack or seepage pipe into an excavated pit or an excavated trench.

Advantageously, therefore, the bulk material has a lower specific gravity than water. A specific weight of less than 400 kg / m ^{3 is} preferred, more preferably one of not more than 250 kg / m ³ . As the weight increases, the container volume must be reduced. However, the buoyancy of the container also increases. However, this is usually not important, thanks to a covering of the bed. Thanks to the closed container, there is also no danger of chunks of bulk material being washed away. In no case is a higher weight than 1 ton per cubic meter necessary.

Since the bulk material is made of vitrified material, it is inert and therefore particularly environmentally friendly. Glazed and foamed material settles in produce different weight classes. One cubic meter of foam glass ballast, e.g. has a weight between 160 and 1000 kg per cubic meter. Of the most common gravel weighs around 225 kg. Come as a glazed material in particular blast furnace slag and glazed waste slag into consideration, which foamed and broken, but also foam glass made of new or old glass.

The container is at least partially filtering and optionally made of root resistant textile. As such, the so-called geotextiles are known. Nonwovens for installation in the ground, or just geotextiles or geogrids, etc., are available in different qualities. For example, the tear strength is different Fleece thickness between 7.5 and 17 kN / m. The effective pore size is in the range around 0.1 mm. There are textiles tailored to different requirement profiles, which are suitable, depending on the case, to make a trickle sack. In Portions of the container adjacent to adjacent containers is the container advantageously made of a textile with coarse-meshed network structure. In these The focus is only on keeping the bulk material in the container together. Therefore, the mesh can have a mesh size between 2 and 50 mm, or at larger bulk lumps an even larger mesh size. A filtering of the these areas of flowing water is not desired. Because the preferred Foam glass is obtained in a chunk size of 15 to 35 mm is a Mesh between 5 and 20 mm preferred, especially between 8 and 15 mm.

To tie together individual bags of lickers or mats or on To attach surface are advantageous tabs and / or loops on the Containers attached. Tabs can be connected with tabs or attached to the Underground nailed. Loops may be imposed with loops or on Hooks are hung. Alternatively or additionally, ropes, nets, eyelets, etc. providable on the containers.

In a seepage advantageous bumps between two Containers protected by a textile cuff. Such a cuff can as separate piece to be placed around the shock. She can also be part of one of the be adjacent sacks or from two to different sack sacks Assemble belonging parts. Cuffs can also be used on tricky packs be appropriate.

In a container made of a water-permeable textile, which with filled with water flowing through cavities light bulk is, the cross-section of the container is advantageous to a certain Water flow rate designed. Unlike the focus on one for the Trade specific volume or weight at which the dimensions of the textile Transport container by the volume to be covered and for transport suitable packing mass is at one on the flow rate designed container the cross-sectional area depending on the used Characterizing bulk material. For a foam glass ballast with 30% cavity corresponds to a round bag cross section of 40 cm about a tube with 12 cm Diameter. A bag diameter of 50 cm corresponds to a cable cross-section of 15 cm. Accordingly, 40 and 50 cm in cross-section measuring bags at this filling material standard mass. Their length, however, is on the transport options parked and advantageously measures 2 or 5 meters. The resulting volume or Weight is a random result, not a targeted one, as easy as possible Calculating delivery quantity of gravel. For flat containers are the same Considerations applicable.

Advantageously, such a container measures for a seepage pipe or Sickerschicht therefore at least about 2, preferably about 5 meters in length. At least one of the other two dimensions measures at most 80 cm, preferably between 20 and 50 cm, in particular 30 to 40 cm. 80 cm in the Layer thickness or in line cross section are usually more for Collecting shafts needed. For seepage bags or sacks for flat Arrangement usually suffice the smaller dimensions in full. Sacks for Collecting shafts, however, are much shorter. Claimed bags for Collecting shafts in lengths of about 50 to 200 cm in increments of 50 cm, at Diameters of 60 to 200 cm, preferably 80 to 120 cm.

Such containers are advantageous from a container tube of filtering and optionally root resistant geotextile and reticulate ends at both ends made of the hose. The filtering fleece encloses those sides, which with Soil can come into contact. The coarse-meshed net closes the bag as far as possible without obstruction of the water flow for the filled Easy bulk.

In the case of containers for planar arrangement are on the longitudinal side of the container advantageous arranged loops or tabs with which the container to a Underground can be attached or connected to each other. For seepage layers is often the laying of a fleece before the introduction of the lick sacks expedient, so that the sacks need not be made of such. In As a result, the layer needs to be covered with a large-area fleece to become.

Brief description of the figures

Figur 1:

einen mit Schaumglasbrocken gefüllten Geotextil-Sack mit seitlich angebrachten Schlaufen,

Figur 2:

eine Geotextilmatte,

Figur 3:

einen Vertikalschnitt durch eine Hangentwässerung,

Figur 4:

einen Vertikalschnitt durch eine tiefgründende Sickerung,

Figur 5:

einen Vertikalschnitt durch eine Sickerleitung mit Sickerrohr,

Figur 6:

einen Vertikalschnitt durch eine Sickerleitung ohne Sickerrohr,

Figur 7:

einen Vertikalschnitt durch eine Sickerschicht aus Säcken mit Geotextillaschen,

Figur 8:

eine Ansicht einer Sickerschicht aus Säcken mit Laschen,

Figur 9:

eine Ansicht einer Sickerschicht mit aneinander angelehnten Säcken,

Figur 10:

einen schematischen Längsschnitt durch eine Sickerleitung ohne Sickerrohr,

Figur 11:

eine schematische Darstellung eines Sickerleitungssackes mit Verbindungsmanschette,

Figur 12:

einen Sickerleitungssack mit separater Schutzmanschette,

Figur 13:

einen Sickerleitungssack mit Halbmanschetten,

Figur 14:

eine Hangentwässerung mit Sammelschacht in der Aufsicht.

Figur 15:

einen Sickerleitungssack mit Drahtgitterabschlüssen,

Figur 16:

eine schematische Darstellung eines Anschlusses einer Sickersackleitung an eine konventionelle Rohrleitung,

Figur 17:

eine schematische Darstellung eines Anschlusses einer konventionellen Sickerleitung an eine erfindungsgemässe Sickerung.

The invention will be explained in more detail with reference to examples shown in the drawings. It shows

FIG. 1:

a filled with foam glass geotextile bag with side-mounted loops,

FIG. 2:

a geotextile mat,

FIG. 3:

a vertical section through a slope drainage,

FIG. 4:

a vertical section through a deep infiltration,

FIG. 5:

a vertical section through a seepage pipe with seepage pipe,

FIG. 6:

a vertical section through a seepage pipe without seepage pipe,

FIG. 7:

a vertical section through a seepage layer of bags with geotextile pockets,

FIG. 8:

a view of a seeping layer of bags with tabs,

FIG. 9:

a view of a seepage layer with bags leaning against each other,

FIG. 10:

a schematic longitudinal section through a seepage without seepage pipe,

FIG. 11:

a schematic representation of a Sickerleitungssackes with connecting sleeve,

FIG. 12:

a drainage bag with separate protective sleeve,

FIG. 13:

a seepage bag with half-cuffs,

FIG. 14:

a slope drainage with collecting shaft in the supervision.

FIG. 15:

a drainage sack with wire mesh shutters,

FIG. 16:

a schematic representation of a connection of a bagging line to a conventional pipeline,

FIG. 17:

a schematic representation of a connection of a conventional seepage to an inventive infiltration.

Description of the embodiments

The cylindrical bag 11 shown schematically in Figure 1 is made of a so-called geotextile manufactured and filled with foam glass gravel. He owns a front side of a filling opening 13, which is shown tied. Instead of a lacing, the bag can e.g. also be sewn. Its length is about 5 Meter and its diameter is 40 cm. Such bags 11 have a weight of about 250 kg, and are therefore relatively easy to handle manpower. Of the shown bag has distributed over its length three loops 15. These are, as in Figure 8 shown, suspended in loops of other bags. So are one Variety of sacks impose a flat soaky layer.

FIG. 2 shows a seepage mat 17. This has a majority of chambers 19 for the bulk material. It consists of a geotextile. Two layers of Textiles are stitched together at intervals of about 50 cm. This results Hose chambers 19 next to each other. These chambers are at your ends closed by the two textile layers there across the first stitching are stitched together. The chambers 19 are foamed, vitrified slag filled. Through the filling, the chambers bulge. Such seepage mats can be laid in one or more layers. The multi-layer has the advantage that the Sickerschicht is nowhere interrupted, resulting in the stitching lines at single-ply Use and a compact Hinterfüllgut otherwise easily done. The the Tissue-forming tissues may be different, e.g. one-sided Geotextile and a network on the other side. Basically, the geotextile can always be introduced independently of the seepage tank 11,17. In two-ply Application of the seepage mat 17 is advantageous in each case the other seepage mat facing textile layer of an open porous fabric or a net.

FIG. 3 shows a schematic cross section through a seepage line in FIG Terrain. In a running with slope trench 21 is a waterproof film or a waterproof mat 23 inserted. This can e.g. through a plastic wall connection plate, how to protect a building wall from moisture be attached to be formed. The edge of the waterproof mat 23 extends up the valley side of the trench via the aquifer 25. On the mountain side, on the other hand, it begins below the aquifer 25 waterproof mat 23 forms a kind of gutter. In the gutter is a bag 11 Geotextile filled with foam glass ballast 26.

The laying of such a drainage pipe for slope drainage is Quite simply: trench 21 is excavated with a trenching machine. A man places the waterproof mat 23, working from the bottom up, into the trench. The mat can be fixed with nails in the trench wall. Two more Workers place the prepared sacks 11 in the gutter. Then he closes Excavator already back to the trench with the excavated material.

The advantages of such a drainage pipe are quickly apparent: It is unnecessary to create a concrete banquet and the laying and joining of PVC seepage pipes. This shortens the construction time and costs can be kept lower. The seepage pipe is resistant to relatively coarse settlements and off-road displacements as it consists of a suitcase. The bed 26 of foam glass lumps has a flowable cross section of 30% of the case cross-section. With a bag cross-section of 40 cm, therefore, a discharge capacity can be achieved, which corresponds to a seepage pipe of 12 cm. However, the surface over which this amount of water can penetrate into the seepage is about 6 times larger. Since only individual holes are provided in seepage pipes, the opening cross-section in this area permeable surface is many times greater. On the other hand, depending on the textile, the individual openings are many times smaller. Clogging of the drainage pipe is therefore practically impossible. The drainage pipe can also be carried out eg just below the surface of a path. There is no danger that it will be crushed, even if very heavy loads would be carried over. The pressure load of such a foam glass bulk may go against 6 N / mm ² .

Another advantage is the simple delivery and the rapid installation of the Material. Especially in hard to reach areas is the possibility of delivery closed and relatively light sacks e.g. by helicopter or on small A big advantage for vans. The subsequent installation of the filled bags is also extremely uncomplicated and unproblematic.

The silt bag 11 shown in FIG. 4 is vertical into a pit 21 posed. He connects an upper water-bearing layer 25 with a lower permeable layer 27. The intermediate impermeable to water Layer 29 is characterized with an opening of 30% of the bag cross-section pierce. Penetration of particles into the seepage is through the geotextile prevented. Thanks to the compressive strength of the foam glass schotter 26 remains the Opening width unaffected by external influences such as vibrations or Terrainings etc.

To protect a conventional leach pipe 31 at the foot of a Building 33, as shown in Figure 5, also such a bag 11 with Foam glass ballast be placed over the drainage pipe 31. That's it Introduce the filtering seepage packing 26 simultaneously with the filter pack Encasing protective geotextile possible. The sack bag is not full, so that he lays around the seepage pipe.

However, even with such a near-to-house drainage on the Banquet 35 and the pipe 31 are omitted. As shown in Figure 6 must then the water-impermeable Sickerplatte 37 not only to the building foot go down, but form a groove 39 in the foot area. In this groove is then again put the silt bag 11, which now both the drainage pipe and Sickerpack forms.

In Figure 7, a surface slope drainage is shown, in which off a plurality of seepage sacks 1 1 a seeping layer 41 is created. Every bag of silt has two on Lugs 43 made of geotextile secured to opposite sides of the bag. The Tabs extend over the entire length of the bag and have a width on, which is slightly larger than the bag cross-section. The bottom sack is at the Creation of the seepage layer placed on the ground and at the water-bearing Side lying tab 43 with nails 45 attached to the substrate 47. The second bag is in the same way on the first bag 11, and the second layer of bags on put the first layer of bags and their tabs 43 attached to the ground. The Front tab 43 depends in the sequence on the bag below 11th down and covers this.

In this way, any number of layers of bags 11 can be arranged become. Each sack is hung on one tab and covers with the other Peel off the surface of the next lower one. Finally, with a Geotextile strips 49 the topmost layer can still be covered before the layer 41 covered with soil.

Alternatively, or in addition, the bags 11 may be provided with loops 15 be. Figure 8 shows schematically how the loops 15 are interlaced can. It is starting below each loop 15 of the upper bag through pulled the loop of the lower bag (left side of the figure). Or it will be up beginning the loop of the lower bag with a rod 51 behind the loop 15th the upper bag 11 attached (right figure side). This is the staff in front of the one Loop part of the lower bag, behind one or two loop parts of the upper bag Sink through and again in front of the other loop part of the lower bag passed by. Such bags are made of a tear-resistant geotextile.

In order to obtain a flat infiltration layer 41, the seepage bags 11 also be placed side by side. This is illustrated in FIG. So that some Meter-long bags 11 do not fall over, may initially into a ditch one or two Sacks are inserted, which fill the trench triangular. Subsequently Then the following bags can be ajar to the previously inserted. It a variety of laying patterns are conceivable, similar to the laying pattern of Paving stones. The sacks can also be bent.

Such seepage layers adapt to the terrain and can without Formwork introduced and covered only at a later date. In the Leach bags can also be wrapped armor, which are the bags of litter stiffen and so can take over a certain slope protection. This is the Content of the bags of lickers advantageously bonded with a cement slurry. This can the silt bag 11 is opened at the top and doused with a watering can of gravel become.

For seepage pipes, the seepage bags 11 in a row in one Series laid. FIG. 10 illustrates this. Leach bags 11 of about 5 meters in length are in a number 53 laid. Between the substrate 47 and the bagging line 53 is a waterproof layer 37 is inserted. The bags 11 can also be partially be arranged overlapping. Thus, the joint joints 55 between the bags 11th are not filled when covering the trench, these are advantageous with a Cuff protected. FIGS. 11 to 13 each show a bagging line 53 Leach bags 11 having a tubular geotextile layer. The textile Tube 57 is filled with ballast and at both ends with textile nets 59th closed.

In FIG. 11, the bag bottom 61 is at a distance from the tube end 63 arranged. The next bag of silt 11 is in this on the bottom of the bag 61st pushed in the protruding tube. This projecting tube forms a Cuff 65 around the butt joint 55 between the leach sacks. In FIG. 12, the Cuff 65 formed by a separate bandage. In Figure 13 is the sipple bag made up of two shifted together sewn halves, leaving one half one half sleeve 65 at one end and the other half a half sleeve 65th forms at the other end of the textile tube. This allows the seepage bags 11 be easily joined together. The joints are well covered. Below, e.g. lies half the cuff of one bag and the other the other Sickersackes.

Figure 14 shows that whole drainage systems with such Bagging lines 53 can be created. This will be the Sickersackleitungen 53 led against a baguette shaft 67. They are going over the seep sack bay 67 placed, thereby the water from the seepage bag line 53 enters the Slot 67. Below the seepage pit, the accumulating water be continued by a possibly thicker baggage bag line. This is simply placed under the bag and possibly with a waterproof film for Dirt sealed off. However, for mergers of lines are in the Usually no shafts provide.

FIG. 15 shows a schematic, perspective sketch of a Sickersackes 11 for a bagging line, in which the pipe section 69 from a textile material, in particular a non-woven intended for ground installation. From The fleece produced in different roll widths is a section taken and connected to a pipe. The tube 69 may also be off be made of a wire mesh. So that the tube filled with seepage material it must be closed unilaterally. This happens because of that the end of the fleece tube is pulled over a short sheet metal tube. A circular Wire mesh piece 71 is now pressed through the metal tube in the nonwoven tube 69. The diameter of the wire mesh piece 71 is larger than the diameter of the Fleece tube 69. Therefore, the wire mesh piece 71 must be bent for insertion. Due to the elasticity of the wires of the wireframe piece, this stretches Wireframe piece 71 again flat, as soon as the ends of the wires of the grid is not more pending on the sheet metal tube. The ends of the wires are in sequence through the Nonwoven pressed through. This holds the lattice piece in the fleece tube.

Instead of a wire grid 71 may also be a plastic lattice piece be used. In such, those passing through the web have Tips barb on advantageous, which prevent the lattice piece out can be pulled the fleece. Now, if the pipe 69 is closed on one side, it will filled and closed on the other side in the same way. Such bags or seepage pipes can now be easily pushed together. The Pipe ends which project the lattice pieces form a sealing ring the butt joint 55. They can also be overlapped in the manner of cuffs 65 to be ordered.

Figures 16 and 17 illustrate the fact that a Seepage line 53 according to the invention also to a conventional pipeline 71 is connectable, and vice versa. For this purpose, a reduction piece 73 with the narrower Radius connected to a pipe 71 and the silt bag into the other Opening 75 is inserted. Depending on the direction of flow of the water is the waterproof Mat 23 wrapped around the connection piece 75 (FIG. 17) or in this introduced (Figure 16). Must the waterproof mat 23 is inserted into the socket 75 If necessary, they must be cut to size. Maybe enough an incision parallel to the direction of flow, in which the Stutzenwandung can be inserted. Flows the water from the silt bag line into the Piping, so is the attachment of a fleece around the connection area around expedient to penetrate there between sack 11 and connecting piece 75 To filter water.

In summary, it can be said that with a pipe 69 off a provided for ground installation textile, which is filled with Foam glass gravel 26 and in a covered over the percolation again Drainage trench is laid, at the same time the drainage pipe and the silt bag is installed. The delivery of the material, the installation and the covering of the Seepage is thereby solved in a way that can not be simplified. The result persuades further by the property that such a seepage compared with Seepage pipelines are less susceptible to broken pipes and blockages.

Claims (12)

1. A drainage fitting or drainage conduit with a container (11, 17) which at least partly is manufactured of a filtering textile, filled with a bulk material (26) of glazed material forming cavities capable of being flowed through, characterised in that the bulk material (26) is formed by broken chunks of foamed, glazed material.
2. A drainage fitting or drainage conduit according to claim 1, characterised in that the bulk material (26) has a lower specific weight than water, preferably is lighter than 400 kg/m³, particularly preferably has a specific weight at the most of 250 kg/m³.
3. A drainage fitting or drainage conduit according to claim 1 or 2, characterised in that the bulk material consists of foamed glass with a chunk size of 15 to 35 mm.
4. A drainage fitting or drainage conduit according to one of the claims 1 to 3, characterised in that the textile is resistant to roots.
5. A drainage fitting or drainage conduit according to claim 1 to 4, characterised in that the cross section of the container (11, 17) is designed for a certain water through-flow quantity.
6. A drainage fitting or drainage conduit according to claim 1 to 5, characterised in that its length measures at least about 2, preferably about 5 metres, and at least one of the other two dimensions measures at the most 80 cm, preferably between 20 and 50 cm, in particular 30 to 40 cm
7. A drainage fitting or drainage conduit according to claim 1 to 5, characterised in that its length measures approx. 50 to 200 cm, its diameter 60 to 200 cm, preferably 80 to 120 cm
8. A drainage fitting or drainage conduit according to one of the claims 1 to 7, characterised in that the textile forms a container bag (57).
9. A drainage fitting or drainage conduit according to claim 8, characterised by grid-like or net-like closures (59,61) at both ends of the bag (57).
10. A drainage fitting or drainage conduit according to one of the claims 1 to 9, characterised in that the abutments (joints) between two containers (11, 17) are protected with a textile sleeve (65).
11. A drainage fitting or drainage conduit according to one of the claims 1 to 10 characterised by tabs or loops on the containers (11, 17) with which the container may be fastened on a further container and/or on the [under] ground.
12. A drainage fitting or drainage conduit according to one of the claims 1 to 11, characterised in that the containers (11, 17) are arranged in a ditch or a pit and that a water impermeable layer (23) is arranged between the containers and the base of the pit or ditch.

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