DE2237707A1 - DRAINAGE ELEMENT FOR EARTH AND GROUND HYDRAULIC ENGINEERING - Google Patents

Description

7237707

BAYER AG

LEVERKUSEN-Bayerwerk O -j JIJl j

Central area

Patents, trademarks and licenses

Sdt / As

Drainage element for the earth, ground and Hydraulic engineering

The invention relates to a drainage element for earthworks, civil engineering and hydraulic engineering with large surface dimensions, small Weight, low construction height and clear constructional separation of the punctures "filtering" and "water drainage ".

In the above-mentioned areas of earthworks, civil engineering and hydraulic engineering, drainage is used if the water level is applicable and to influence the course in the ground. For this purpose, the drainages are embedded in the ground, withdrawn This, due to their greater void content compared to the surrounding soil, the water and lead it to receiving waters.

So far, surface and strand drainage, which are constructed as mixed gravel filters or made of, have been used for this purpose There are drainage pipes that are laid both with and without sheathing through filter layers, with as Filter layers peat, wicker, gravel filters and the like be used.

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The installation of such drains must be done with great care and is very labor-intensive. Also need, in particular with mixed gravel filters, large masses of building material can be transported over long distances to the construction site. An adjustment regarding filter properties and water drainage to locally changing subsoil conditions is usually only possible with considerable effort.

The invention is based on the object, through the use of novel components and the choice of suitable ones Constructions advantages compared to the usual drainage systems, especially with regard to easier and faster installation and the possibility of adaptation to achieve locally different subsurface conditions.

The subject of the invention is now a large-area drainage element, which is characterized in that it consists of 2 parallel textile fabrics made of synthetic or other hard-to-rot fibers with a water drainage area in between. This construction creates a drain cross-section created for the drainage of water to the receiving waters.

The acting as a filter operative part of the text Dränageelemente lien fabrics can both fleece and fabric, preferably made of synthetic fibers _Fa, · be suitable are, for example, non-woven mats, as described in DOS 1,784,483.

The water drainage area can be designed in various ways. For example, it can be slotted lengthways or crossways

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or perforated pipes can be arranged parallel between the two textile fabrics. In this case, the drainage element is preferably constructed so that the 2 textile fabrics are connected to one another in the areas between the pipes, e.g. by seams running parallel to the pipes This practically creates pockets ¹¹ in which the pipes lie, preventing them from slipping. <"

The drainage area can also be slotted or perforated corrugated, trapezoidal or double-T profiles or be formed by punctiform spacers. .In the latter In this case, it is appropriate to use the spacers, e.g. by gluing or welding to the textile fabrics to connect, thus a transportable! stable drainage element is formed.

Finally, it is also possible that the water drainage area is formed by a fleece made of very coarse-denominated synthetic fibers.

Figs. 3-10 show some embodiments for the water drainage area! slotted 3 and 4 and perforated 5 tubes; slotted corrugated profile β; perforated frapea profile 7i perforated double T-beam 85 point spacer 9; Random fleece made of very coarse denier fibers 10.

With the large-area and lightweight drainage elements of low construction height, the The "filtering" and "water drainage" functions are structurally clear separated from each other.

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As materials for these elements and the textiles! Area * formations come because of the required non-rot and the lowest possible weight, preferably plastics and synthetic fibers. Even those that are difficult to rot natural fibers (coconut fibers) or mineral fibers come into consideration.

The individual drainage elements can be attached to the construction site e.g. by means of textile adhesive tapes or by welding Butt joints are connected to one another and sealed at the edges to prevent soil particles from migrating into the To prevent water drainage at these points.

FIGS. 1 and 2 show two exemplary embodiments of the invention. Fig. 2 shows a drainage element, consisting of 2 fiber fleeces 1 and 2 as filter layers and transversely slotted or perforated plastic pipes 3 ßXB waaeerabführenden elements. The two fleeces are connected to one another by parallel seams 4 running in the direction of flow, which are preferably made from synthetic fibers using sewing thread. Pipes, which can have different diameters depending on the amount of water or can be laid at different distances, are inserted into the compartments that are created in this way. If the pipes are cross-slotted, the mat is also flexible in the direction of flow and can adapt to unevenness in the subsurface.

Fig. 2 shows a drainage element with fiber fleece 5 and 6 as filter layers and a tangled fleece 7 as a water drainage area. The individual fleeces can be laid on top of each other on the construction site; a connection of the fleece can omitted. FIGS. 11 to 14 show some application examples for the drainage elements described.

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Pig. 11 shows the installation of drainage elements according to the invention 14 on embankments to avoid sloping springs due to groundwater or strata water. file 15 is the original terrain, 16 is the original Ground water level, 17 is the road body and 18 is the receiving water.

Pig. 12 shows the installation of drainage elements according to the invention 19 on jumps in terrain to avoid water pressures from groundwater and / or rainwater on a support structure 20, where 21 is the original site and the original water table. 23 is a receiving water.

Pig. 13 shows the installation of the invention Dränageelementen 24 to 25 buildings to derive basic · and / or stormwater outfall in 26th

Pig. 14 shows the installation of drainage elements 27 according to the invention for draining play areas with lawn 28 or ashes - 29 - cover in receiving waters 30, which are let into the grown soil with low permeability 31 are.

The elements according to the invention can be produced in very large dimensions, for example up to a width of 6 m and any length, which is only limited by the possibility of transport.

The invention has the following advantages:

Quick installation with little personnel and machine effort due to the large dimensions and the

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low weight of the drainage mats; relocation without a hitch, even by unskilled personnel; good adaptability to the existing subsoil conditions in terms of filter properties and water drainage through the use of different types of textile fabrics as filter layers and changing the drainage cross-section, e.g. by using different pipes Diameter;

Due to their low weight, the drainage elements can also be transported in rough terrain (e.g. mud flats); little excavation due to the low construction height of the drainage elements;

Cover as a result of the filter layers on both sides possible with the existing soil at the construction site; problem-free adaptation to the course of the terrain as a result of sufficient Flexibility of the mats in the direction of flow and perpendicular to it.

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Claims (8)

Patent claims: Large-area drainage element, characterized that it is difficult from 2 parallel textile fabrics made of synthetic or other rotable fibers with a water drainage area in between. 2. Drainage element according to claim 1, characterized in that that the textile fabrics are nonwovens made of synthetic fibers and / or threads. 3. Drainage element according to claim 1, characterized in that that the textile fabrics are fleeces made of mineral or difficult to rot, natural fibers or threads. 4. Drainage element according to claim 1, characterized in that that the textile fabrics are woven from synthetic fibers. 5. Drainage element according to claims 1-4, characterized in that the water discharge area by slotted or perforated tubes lying parallel between the two textile fabrics are formed. 6. Drainage element according to claim 5, characterized in that that the 2 textile fabrics are connected to one another in the areas between the tubes. 7 »Drainage element according to claims 1-4, characterized in that the water drainage area is slotted or perforated corrugated, trapezoidal or double-T profiles or punctiform spacers is formed. Le A 14 520 - 7 - 0 9 8 8 6/075 8. Drainage element according to claims 1-4, characterized in that that the water drainage area is formed by a fleece made of coarse-denier synthetic fibers. Le A 14 520 - 8 - 6/075 Blank page