DE202010016596U1 - Underground storage - Google Patents

Abstract

Underground storage (2) for receiving a fluid, which provides a storage volume and is made up of elements (3) which are at least partially surrounded by a fluid-impermeable layer (4), characterized in that between the elements (3) and the fluid-impermeable layer (4) a support layer (5) is arranged.

Description

The invention relates to an underground storage for receiving a fluid.

Furthermore, the invention relates to a fluid receiving and storage system with at least one underground storage for receiving a fluid.

On sealed surfaces, rainwater sometimes accumulates in rainfall events in large quantities, which must be disposed of properly.

In particular on large parking lots, industrial areas, on traffic routes and other areas that do not allow infiltration of the accumulating water, the resulting rainwater is to be supplied to rainwater management.

For caching of the rainwater storage and storage options are to create to receive the rainwater before feeding to a cleaning system, a leaching system or the receiving water.

It is known from the prior art to provide arrangements of elements which provide a free storage volume (so-called "boxes"), which are enveloped by a fluid-impermeable layer and which are provided with an inlet and a drain to therein Fluids, especially rainwater underground store.

Such underground reservoirs for receiving a fluid have the disadvantage that the elements, which are generally made of polymer material, only partially withstand the laterally acting earth and / or water pressure mechanically. Another disadvantage is that due to the low density of the memory when installed below the groundwater level in the ground this undergoes considerable buoyancy in the empty state or at a partial filling of the memory, which can lead to the destruction of the memory.

This is where the invention comes in, which has set itself the task of providing an underground storage, which serves to receive a fluid and which overcomes the disadvantages of the prior art.

Another object of the invention is that this memory can be produced quickly and inexpensively.

The invention also has the object to provide a fluid receiving and storage system with at least one underground storage for receiving a fluid.

The object of the invention is achieved by an underground storage for receiving a fluid according to claim 1.

According to the invention, it has been recognized that an underground reservoir for receiving a fluid which provides a storage volume and is composed of elements which are at least partially surrounded by a fluid-impermeable layer is characterized in that a support layer is arranged between the elements and the fluid-impermeable layer.

The support layer is used according to the invention to protect the elements from the acting earth and / or water pressure and in particular to distribute the acting forces resulting from the earth and / or water pressure evenly on the arrangement of the elements.

In the context of the present invention, it has proved to be advantageous if the elements are of substantially parallelepiped shape, can be arranged adjacent to one another and can be connected to one another.

The arrangement of parallelepiped-shaped elements is advantageous insofar as a storage volume can be created by arranging the elements together and stacking the elements one above the other in a rapid manner.

With the aid of suitable connecting elements, it is possible to connect the interconnectable elements and thus to provide a stable arrangement of the elements.

But there are also other elements that are not formed substantially cuboid, can be used to build a memory.

It is within the scope of the present invention advantageous if the elements have a free storage volume for receiving the fluid of at least 90%, in particular of at least 93%.

A free storage volume of the elements in said area makes it possible to store large amounts of fluid in the memory, the elements themselves in this case make up only a very small part of the volume of the memory.

In the context of the invention has proved to be favorable when the memory of a fluid-impermeable layer which is formed as a film or as a wall, in particular as a sheet pile wall or a combination of the above.

The provision of a film as a fluid-impermeable layer is advantageous in that such a film can be obtained inexpensively, in a simple manner Can be used to manufacture the memory and can be easily and fluid-tight welded to the edges of the memory.

A wall, in particular a sheet pile wall, can be advantageously used to provide on the one hand a fluid-tight layer surrounding the elements, on the other hand it is thereby possible to stabilize the elements arranged adjacent to one another.

In the context of the invention, it can also prove to be advantageous if both a fluid-impermeable layer in the form of a film which is combined with a wall, in particular a sheet pile wall, is provided.

The backing layer may consist of a bed of gravel, of a non-compactable soil material, of a recycled building material or of a broken building material or of a combination of the foregoing. With particular advantage, the material for the support layer on a narrow particle size distribution, whereby a high strength of the support layer in the compression of the material can be achieved.

The materials mentioned are all inexpensive to buy and can be arranged in a simple manner in the form of a support layer.

A support layer of the aforementioned materials also has the advantage that it also provides a free storage volume for receiving the fluid.

As an alternative to a supporting layer of the abovementioned materials, it is also possible to provide a supporting layer in the form of gabions and / or in the form of upholstered walls.

In the context of this invention, gabions are understood to mean an arrangement consisting of a basket-like structure, which can be formed, for example, from a metal grid filled with gravel or stones, which are held in the basket-like structure by the metal grid.

A padding wall in the context of the invention is an arrangement in which a geotextile, which has a high tensile strength and is fluid-permeable, is placed in bays, wherein in the bays gravel is introduced so that the gravel is pocketed enclosing the bays, creating a Wall assembly can be produced, which offers resistance from outside forces.

As support layers such gabions and / or padding walls can be incorporated into the memory.

It is also possible for both a bed of gravel, of a non-compressible soil material, of a recycled material recycling material or of a broken building material or a combination of the above together with gabions and / or upholstery walls to be built into the storage.

Since both a bed of the aforementioned materials as well as a gabion and a padded wall provide a free storage volume, advantageously, the volume of the fluid to be absorbed in the memory can be increased.

It has proved to be advantageous if the support layer provides a free storage volume for the fluid, which is at least 30% of the free storage volume of the elements.

The free storage volume of the elements is thus about three times greater than the free storage volume of the support layer. Accordingly, the fluid will be distributed in the free storage volumes of the elements and the support layer.

The backing layer transmits the lateral pressure of soil and / or water evenly to the elements that can withstand the uniform pressure applied.

By the choice of the support layer forming material, such as a bed of gravel, a non-compactable soil material, a recycled material or a broken building material or a combination of the above, and / or from gabions filled with gravel or stones, and / or upholstery walls, in which gravel is inserted, the density of the underground storage is compared with a memory of the prior art, which has no support layer advantageously increased.

Gravel or stones have an average density of 2.3 to 3.15 g / cm ³ .

An underground storage according to the present invention can thus be designed so that by an appropriate choice of volume of the support layer this even with complete emptying of rainwater still has an average density - relating to the free volume, the elements and the support layer (FIG the fluid-impermeable layer is not taken into account here) - of greater than 1.00 g / cm ³ , so that it can withstand the acting buoyancy forces in the groundwater. Such an inventive memory is therefore not damaged or destroyed by the installation below the groundwater level by acting buoyancy forces.

The underground storage for receiving the fluid of the present invention is particularly suitable as a rainwater storage, he is connected for this purpose with appropriate supply lines and Zuleitbauwerken for rainwater as well as with corresponding derivatives and drainage structures for rainwater.

The object of the invention with regard to specification of a fluid receiving and storage system with at least one underground storage for receiving a fluid is achieved according to claim 10.

According to the invention it is provided that a fluid receiving and storage system is equipped with at least one underground storage for receiving a fluid according to the present invention.

The present invention will be explained in more detail with reference to the accompanying figures.

This shows:

1 a fluid intake and storage system with a subterranean storage in a sectional side view;

2 a fluid receiving and storage system with a subterranean storage in a sectional plan view;

3 another sectional side view of an underground storage of a fluid receiving and storage system.

In 1 is a sectional side view of a fluid receiving and storage system 1 shown an underground storage 2 for receiving a fluid.

The underground storage 2 is made up of individual elements 3 built up against each other and stacked.

Immediately to the elements 3 is a supporting layer 5 adjacent, which consists of a gravel. The support layer 5 limits the elements on all sides 3 ,

The support layer 5 Again, it is a fluid-impermeable layer 4 Surrounded on all sides, so that no exchange of fluid with the soil can take place.

Rainwater can enter the underground storage 2 the fluid intake and storage system 1 via a supply shaft for the rainwater 6 and a fluid supply line 8th be supplied.

The fluid supply line 8th is through the fluid-impermeable layer 4 led, wherein the rear bushing is designed edge-side fluid-tight, so that no fluid entering the soil or no soil in the memory 2 can be washed

This can be done, for example, by a welding process in which the fluid supply line formed as a pipe 8th and the fluid-impermeable layer 4 welded together.

To drain the rainwater from the underground storage 2 serves the fluid discharge 9 in the form of a pipe.

Also the tube 9 Again, for example, by a welding process with the fluid-impermeable layer 4 , here connected in the form of a foil.

The fluid discharge 9 leads to a discharge shaft for the fluid 7 for example, having a throttle or other element to the fluid from the memory 2 to derive in an orderly manner.

The underground storage 2 is below a ground level 12 installed in the ground. The shafts 6 and 7 range for inspection and maintenance work up to the top of the terrain 12 ,

The groundwater level / retention water level 13 is higher than the top of the underground storage 2 so that the underground storage 2 below the groundwater level / retention water level in the soil is installed.

In 2 is a sectional plan view of the fluid receiving and storage system 1 shown.

The underground storage 2 is from the elements 3 constructed, which are arranged adjacent to each other.

The Elements 3 are on all sides by a supporting layer 5 surrounded in the form of a gravel pile.

The underground storage 2 becomes a soil from a fluid-impermeable layer 4 limited on the support layer 5 rests on the outside.

The fluid impermeable layer 5 is formed in the form of a film.

In the underground storage 2 For example, a fluid, such as rainwater, may flow over the fluid delivery chute 6 and the fluid supply line 8th be fed in the form of a tube.

The tube penetrates the fluid-impermeable layer 4 and is at the point of penetration with the fluid impermeable layer 4 fluid-tight connected, for example, welded.

For the derivation of the fluid is the fluid discharge 9 leading to a drainage shaft for the fluid 7 leads.

The fluid discharge 9 in the form of a pipe is here as well as the fluid supply line 8th fluid-tight with the fluid-impermeable layer 4 for example, connected by welding.

In 3 is an underground storage 2 a fluid receiving and storage system 1 in one opposite 1 shown by 90 ° rotated side sectional view.

The underground storage 2 is in the ground below a ground level 12 and below the groundwater level / retention water level 13 built-in.

The support layer 5 representing the abutting elements 3 surrounds is here as an embodiment once in the form of a gravel 5 alternatively as gabion 10 and finally as a padded wall 11 shown.

The gabion 10 lies on the outside of the elements 3 and in turn becomes outside of the fluid impermeable layer 4 covered.

The gabion 10 is in this case a metal wire basket filled with stone material.

Such gabions 10 can be advantageously stacked and arranged adjacent to each other, the gabions 10 can also be connected to each other in a simple manner.

The upholstered wall 11 as well as the elements 3 abuts and on the outside of the fluid-impermeable layer 4 limited, is a geotextile placed in bays alternately, wherein in the bays rock material, in the present case coarse gravel, is inserted and the bays are then put on each other like a bag. This results in a very stable in its shape to the dimensions required customizable external forces resistance opposing arrangement of geotextile and rock material.

At the upholstery wall 11 For example, a geotextile that is often stacked in bays is depicted, which in this case has a height greater than half the height of the underground storage 2 ,

Also the upholstery walls 11 can be arranged adjacent to each other, so as an arrangement of a plurality of upholstered walls 11 to accomplish.

The support layer 5 can vary in many ways depending on the subterranean memory 2 requirements and the resulting structure consists of a combination of a portion of bed of gravel, a non-compactable soil material, a recycled building material or a broken building material or a combination of the above, from gabions and upholstered walls.

LIST OF REFERENCE NUMBERS

1

Fluid intake and storage system

2

Underground storage

3

element

4

Fluid-impermeable layer

5

backing

6

Supply shaft for the fluid

7

Discharge layer for the fluid

8th

fluid supply line

9

fluid discharge

10

gabion

11

pad wall

12

ground level

13

Groundwater level / retention water level

Claims (10)

Underground storage ( 2 ) for receiving a fluid that provides a storage volume and elements ( 3 ) which is at least partially formed by a fluid-impermeable layer ( 4 ), characterized in that between the elements ( 3 ) and the fluid-impermeable layer ( 4 ) a supporting layer ( 5 ) is arranged. Underground storage ( 2 ) for receiving a fluid according to claim 1, characterized in that the elements ( 3 ) are formed substantially parallelepiped, adjacent to each other can be arranged and connected to one another. Underground storage ( 2 ) for receiving a fluid according to claim 1 or 2, characterized in that the elements ( 3 ) have a free storage volume for the uptake of the fluid of at least 90%, in particular of at least 93%. Underground storage ( 2 ) for receiving a fluid according to any one of the preceding claims, characterized in that the fluid-impermeable layer ( 4 ) is a film or a wall, in particular a sheet pile wall, or a combination of the above. Underground storage ( 2 ) for receiving a fluid according to any one of the preceding claims, characterized in that the support layer ( 5 ) is a bed of gravel, of a non-compactable soil material, of a building material recycling material, or of a broken building material, or a combination of the aforementioned. Underground storage ( 2 ) for receiving a fluid according to any one of claims 1 to 4, characterized in that the support layer ( 5 ) Gabions ( 10 ) and / or upholstered walls ( 11 ) contains. Underground storage ( 2 ) for receiving a fluid according to any one of the preceding claims, characterized in that the support layer ( 5 ) a bed of gravel, of a non-compactable soil material, of a building material recycling material, or of a broken building material, or a combination of the foregoing, and gabions ( 10 ) and / or upholstered walls ( 11 ) contains. Underground storage ( 2 ) for receiving a fluid according to any one of the preceding claims, characterized in that the support layer ( 5 ) provides a free storage volume for the fluid that is at least 30% of the free storage volume of the elements ( 3 ) is. Underground storage ( 2 ) for receiving a fluid according to any one of claims 1 to 8, which is designed as a rainwater storage. Fluid intake and storage system ( 1 ) with at least one underground storage ( 2 ) for receiving a fluid according to any one of claims 1 to 9.

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