FR2751005A1 - Erosion protection system planted with indigenous species of vegetation - Google Patents

Abstract

The system has an area made up of one or more cells (51) of the modules (50, 60). Each cell has 2 cross pieces (12, 13) which allow the positioning of branches (20) and on top are two rails (15, 16) which are joined at each end to the cross pieces by rods (17). The cells are then covered with soil (7). The top of the modules is planted with indigenous species. To make the system more durable a number of posts (71, 72 ) are inserted in the ground and arranged in an offset pattern so that branches (75) can be placed around them and covered with earth to promote the growth of vegetation. The branches are held in place by ropes (87) attached to each post in the front row (71) and to a stake (86) pushed into the earth.

Description

 The present invention relates to a device for stabilizing the erosion of a plant support.

 The stabilization of this support is traditionally carried out using stone blocks or concrete systems, which generally harms the environment.

 This device for stabilizing the erosion of a plant support, is characterized in that it comprises at least one zone, consisting of one or more cells of the module and formed (s) of 2 crosspieces allowing to have branches surmounted by 2 stringers assembled at their ends on the crosspieces fixed by rods then covered with earthy materials.

 At the top of the modules are native plant species to recreate a space conducive to wildlife.

 To perpetuate all the cells forming the modules and a pile device driven into the ground arranged in staggered rows, it is possible to have branches alternately and cover the whole with soil, thus promoting the recovery of plants. These branches are maintained by a rope fixed on the one hand on each pile in the first row and on the other to a stake driven into the embankment.

 The piles positioned before the alveoli allow during floods to trap between them, drifting plants, thus avoiding to take off the work initially formed and thus perpetuate the modules.

 To contribute to landscape diversity, without significantly modifying the hydraulic flow, a series of piles are driven into the ground at the foot of the module in a non-rectilinear manner.

 Between these piles, horizontally intertwined branches are held by a stake at their ends.

 The entire device makes it possible to retain the soil of the modules and to avoid a landslide that can remove the native plant species planted on top of them.

 The works are carried out from the downstream to the upstream.

Device for stabilizing the erosion of a plant support, comprising at least
me laugh an area, consisting of one or more cells formed of 2 crosspieces allowing to have branches, surmounted by 2 beams assembled at their ends on the crosspieces fixed by rods then covered with earthy materials
At the top of the modules are arranged native plant species allowing to recreate a space favorable to the fauna.

 To perpetuate all the cells forming the modules with a pile device driven into the ground arranged in staggered rows, branches can be arranged alternately and the set covered with soil, thus promoting the recovery of plants. These branches are held in place by a fixed cord on the one hand on each pile in the first row and on the other to a stake, driven into the embankment.

 The piles positioned before the alveoli allow during floods to trap drifting plants between them, thus avoiding removing the work initially formed and thus perpetuating the modules.

 To contribute to a landscape diversity without significantly modifying the hydraulic flow, a series of piles are driven into the ground at the foot of the module in a non-rectilinear manner.

Between these piles, horizontally intertwined branches are held by a stake at their ends.

 The entire device makes it possible to retain the soil of the modules and to avoid a landslide that can remove the native plant species planted on top of them.

 NODULE (50).

CELL: (definition) A cell (see Figure 1) is made up of at least 1 of two crosspieces (ex: 12, 13) and two beams (ex: 15, 16) joined at their ends by rods (17), then
filled with branches (20) and covered with earthy materials (7).

The characteristics of these elements are as follows:
Elements Length (m) Diameter (cm)
mini maxi mini maxi
Sleepers (13, ...) o, 20 4.25 5, 5 35
Smooth (15.16, ...) 0.50 6.00 5.5 35
Rods (17) 0.70 1.50 1.5 9.5
Branches (20) 0, 40 5, 80 1.5 9.5 OPERATING MODE:
Over a maximum length of 6 m, the piles (1) (see figure 2), driven vertically by at least 1 m (2) (see figure 3) at the foot of the structure (3) (see figure 4) with an overhang above ground no more than 4 m (4) (see figure 3 and 4) have a diameter between 5.5 and 35 cm and are spaced (5) (see figure 2 and 5) from 0.30 to 1.20 m .

 Between them (1), the interlaced branches (6) (see Figure 2) having a diameter between 0.15 and 12 cm, with a length of at least 1.50 m are arranged horizontally over a height (9) (see figure 2) between 0.20 and 4 m.

The latter (6), placed with their twigs within a maximum of 24 hours after their cuts, are held at each of their ends in the bottom of the slope by a stake (8) (see Figure 2 and 5), a 5.5 to 35 cm in diameter, and between 0.50 and 2.50 m in length.

 To drain any excess water over the entire length of the structure, pebbles (10) (see Figure 3 and 4) are stacked at the base of it over a height of between 0.10 and 1, 20 m.

 Between the foot of the slope (II) and the piles (1) (see fig.4), perpendicular to the longitudinal axis of the structure, sleepers (12, 13) are arranged horizontally at a distance (14) (see Figure 3) between 0.15 and 1.50 m with respect to the piles (1).

 Before installing the beams (15,16) (see Figure 4), branches (20) are arranged in tight rows or in the form of a mesh between the two crosspieces 12, 13) and projecting from 15 to 35 cm in relation to the opposite the slope.

On the latter (12, 13) (see Figure 4) at their ends are placed the two rails (15,16) held by the rods (17) (see Figure 4).

After installation, the assembly is covered with earthy materials (7) (see Figure 4).

 On this cell (51) (see FIG. 3), at least two others (52, 53, ...) (see FIG. 3), are constructed according to the principle stated above.

 Behind this honeycomb structure (51, 52, 53, ...) (see Figure 3b are again arranged pebbles (10) (see Figure 3) to the upper part of these ensuring drainage and the base of the new set of cells built on an identical principle, but overlapping by 1/4 of the width of the cell (see Figure 3 and 4).

 This construction is renewed as many times as necessary to restore the original configuration (principle of the staircase).

MODULE (60) (see figure 2 and S).

AL VEOLE:
The characteristics of the components:
Elements Length (m) Diameter (cm)
mini maxi mini maxi
Sleepers (18, 19, ...) 0.35 4, 40 5, 5 35
Smooth (21.22, ...) 0.50 9.00 5.5 35
Rods (17) 0.70 1.50 1.5 9.5
Branches (20) o, 40 s, 80 1, 5 9.5
PROCEDURE:
Attached to the crosspiece (13), a crosspiece (18) (see FigureS) of a length equal to the crosspiece (13) + the distance (14) (see Figure 3) will be placed on the bed of stones (10), and assembled using rods (17) to the crosspiece (13).

 At a distance <9 m, another crosspiece (19) is placed on the bed of stones (10) (see figure i). Branches are put in an identical way to those used for the cells of the module (50) (see figure 3 and 4).

On the 2 crosspieces (18, 19), two heddles (21, 22) are assembled (see FIG. 5) as indicated previously. This set constitutes the first cell of
base of the module (60) (see Figure 2 and).

This structure (60) is designed in a manner identical to the whole of the module (50) (see FIGS. 2, 3 and 4).

 Behind the modules (50, 60), to consolidate the reconstituted support of native plant species (cuttings, seedlings, shrubs except poplar) (30) (see Figure 3 and 4) with a diameter of 1.5 to 9.5 cm , are planted.

These plants (30), sunk to a depth of between 0.25 and 1.10 m with an angle (46) (see Figure 3) varying from 50 to 900, will protrude from the soil by 0.10
at t, 20 m.

 MODULE (70) (see Figure 2 and 5).

Characteristics of the components:
Elements Length (m) Diameter (cm)
mini maxi mini maxi
Piles (71, 72, 73, ...) <4 5.5 35
Branches (85)> 3 1.5 9.5
Stakes (86) 0.50 1.75 1.5 9.5
Strings (87) 0.3 2.5
OPERATORE MODE:
In the extension of the bisector of the right angle (48) (see FIG. 2) of the base cell of the module (60), a first pile (71) is located at a distance (88) of 0.80 2.50m (see Figure 2).

With reference to this, a row of piles (71) is arranged in a non-rectilinear manner, at a distance (88) between each from 0.80 to 2.50 m (see Figure 2).

 Behind these (71) are arranged other rows of piles (72, 73, ...) spaced (88) from each other by 0.80 to t, 50 m (see FIGS. 2 and 5).

 Between the stakes (71, 72, 73, 74, ...) are arranged alternately, earthy materials from the natural environment and branches (85) (except poplar) which will come from a cut before 24 hours (see figure 2).

 The rope (87) (see Figure 2) is fixed on the one hand to each pile in the first row (71), and on the other to a stake (86), driven into the slope to a minimum depth of 1 m .

 The entire module (70) is covered alternately with branches and soil, thus promoting the recovery of plants (maximum height 1.50 m).

At the base of the arrangement of the branches (85) (see Figure 2) are built some natural caches (branches 85) with a minimum of 1 mi, for various animals

Claims (5)

 1) Device for stabilizing the erosion of a plant support, characterized in that it comprises at least one zone, consisting of one or more cells (51, 61) of the module 50) and (60) formed (s) 2 crosspieces (12, 13) making it possible to have branches (20), surmounted by 2 beams (15, 16) assembled at their ends on the crosspieces 12, 13) fixed by rods (17) then covered with earthy materials ( 7).  2) Erosion stabilization device according to claim 1 characterized in that at the top of the modules (50, 60, ...) are arranged native plant species (30) allowing to recreate a space conducive to wildlife.  3) Erosion stabilization device according to claim 1 or 2 characterized in that to perpetuate all of the cells forming the modules (50) and (60) a pile device (71,72, ...) pressed in the ground arranged in a staggered arrangement makes it possible to have branches (85) alternately and to cover the whole with soil thus favoring the recovery of the plants These branches are maintained by a cord (87) fixed on the one hand to each pile of the first row (71) and the other to a stake (86), driven into the slope.  4) erosion stabilization device according to claim 3 characterized in that the piles (71,72, ..), (85, 86,87) positioned before the cells allow during floods to trap between the piles (71 , 72, 73, ...) of drifting plants, thus avoiding removing the work initially created and thus perpetuating the modules (50, 60, ...).  5) Erosion stabilization device according to one or other of the preceding claims, characterized in that to contribute to a landscape diversity without significantly modifying the hydraulic flow it is driven into the ground at the foot of the module (50), a series of piles 1 in a non-rectilinear manner. Between these piles (1) interlaced branches (6) horizontally (9) are held by a stake (8) at their ends.