DE29904156U1 - Surface water infiltration system - Google Patents

Description

Anton Buchholz February 1999

Surface water infiltration system.

Infiltration of surface water through a pipe system

The invention shows a way to treat surface water
(Rainwater) to seep into the soil 2
where it seems necessary, where no

There is a possibility of infiltration where the amount of water can cause damage.

Preferably, the surface water infiltration system
used everywhere

1) where you want to maintain or raise the groundwater level;

2) where the public rainwater collection network is too small;

3) where there is a mixed-use storm and waste water sewer;

4) where heavy and prolonged rainfall has flooded rivers and lakes
rise in a short time and cause major flood damage
arrange;

5) where surface 3 is sealed.

Especially in case 4), the slow release of rainwater into flowing waters, a desired but not yet achieved
goal achieved.

The extensive sealing 3 of farms and other areas in places located directly on rivers is causing major problems.

3 -

Because water can no longer seep into the sealed surfaces 3, water-permeable paving is required in places at risk from flooding.

However, practice has shown that water-permeable paving 3 is almost ineffective in heavy rain. Most of the water flows over it because the filling between the stones has often become so solid that it cannot absorb the water at all or only very slowly.

The presence of effective, rapid infiltration could be very helpful here.

Even water from roofs can be fed via the downpipe directly into such infiltration pipes 7 and allowed to seep away underneath, for example, garden areas or other open spaces.

Every plot of land, every square and every new road can, if it is equipped with a surface water infiltration system in the substructure, become an inexpensive and effective rainwater retention basin.

The laying is preferably carried out horizontally and in a serpentine pattern. 11. Laying on a slope is only advisable to a limited extent due to the softening and the resulting risk of slipping.

Here, for example in the case of steep garage driveways, the water can be collected below the slope in a gutter 15. From here it is then made to seep through the water infiltration pipe 7 under the driveway 3 or a compensating area.

I am not aware of any comparable surface water infiltration systems.

The pipes used for the infiltration of surface water 7 are a conversion of existing drainage pipes.

The purpose of drainage pipes is to collect water from the ground and drain it via the pipe system into a receiving water body or a rainwater canal.

In contrast, the pipe 7, which is used to drain surface water, is intended to do exactly the opposite. It is intended to collect the water, for example via a drain 4, and release it into the ground via the drainage pipe 7.

Since the soil 2 usually absorbs large amounts of water only slowly, the water is first introduced and stored in a sufficiently thick, water-storing packing layer of lava or gravel 1, from where it can then seep away.

This packing layer 1 is placed under the sealing 3, which can be either a paving or a layer of tar, and must be thick enough to prevent the supporting surface from sinking.

In order to be able to introduce and store large quantities of water in the packing layer 1 (filling), it is necessary to lay the infiltration pipe 7 in the upper part of the lava or gravel layer.

The structure of the infiltration pipe 7 is only superficial compared to a drainage pipe.

Firstly, the preferably round shape is comparable to A square shape is also possible.

Secondly, the preferred production from plastic and clay, but here too other materials are conceivable.

Thirdly, the fact that the infiltration pipes 7 are laid by folding them in the outer wall 10, in a serpentine line 11.

The water infiltration pipe 7, on the other hand, differs from a drainage pipe due to completely different properties.

Since the water infiltration pipe 7 is intended to release water rather than absorb it, it has an open, all-round, coarse-meshed grid 12 or a perforation,

As an exception, as with 8, only the top or bottom side can be gridded 12 or perforated. In contrast, 9 only has a grid 12 or perforation on the side.

For large areas such as a parking lot 13, it is advisable to lay the infiltration pipe 7 in a networked manner.

Here it can be advantageous to connect several infiltration pipes in serpentine lines 11 to form a network with several gullies 4.

To make this possible, the drain must have 4, up to four outlets 6.

In the event that large amounts of water, such as a heavy downpour, lead to a backflow in the pipe 7, each gully 4 is additionally equipped with up to 4 overflows 5.

This overflow 5 is located above the water inlet 6 and drains the water flowing backwards and rising in the drain directly via a drain pipe into the stormwater sewer, a receiving watercourse, or ditch.

When calculating the costs for a surface water infiltration system, one first assumes that one meter of infiltration pipe 7 does not cost more than one meter of drainage pipe - 1 meter approx. 3-5 DM -.

Secondly, a packing layer 1 must be installed under each load-bearing surface anyway.

Thirdly, one or more drains are part of the standard for every drainage of surface water (rainwater), then you can calculate with what little effort and cost a seepage of surface water is possible.

In order to reduce the flood level in rivers, large and expensive alternative or flood areas must currently be created.

Here, the installation of a surface water infiltration system, under sealed surfaces, near rivers, can make a significant contribution to achieving this goal and lowering the flood level in the long term.

Just a few centimeters less flood water is enough to significantly reduce material and economic damage caused by flooding.

Claims (8)

&igr; - Protection claims 1. Surface water infiltration system, characterized in that surface water is introduced into a lava or gravel bed 1 by means of a water infiltration pipe 7, pre-stored and infiltrated into the soil 2. 2. Surface water infiltration system, characterized in that after laying and using the water infiltration pipe 7, the sealing 3, designed as paving or tar covering, remains accessible and walkable. 3. Water infiltration pipe 7 for the discharge of surface water, characterized in that the outer wall 14 is preferably round, that it is flexible 10, that it is coarsely gridded 12 or perforated all around. 4. Water infiltration pipe 8 and 9, characterized in that the grid or perforation of the outer wall 14 is open, preferably only at the top, bottom or sides. 5. Water infiltration pipe, characterized in that it is preferably made of plastic or clay. 6. Water infiltration pipe 7, characterized in that they are laid in serpentine lines 11 and can be connected to form a network system with several gullies 4. 7. Gully 4, characterized in that it has four outlets can have up to four overflows 5 . 8. Water collecting channel 15, characterized in that it can collect runoff water and deliver it to the water infiltration pipe 7 for infiltration.