the uses of vetiver grass for stabilization of slope, hillsides and

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THE USES OF VETIVER GRASS FOR STABILIZATION OF
SLOPE, HILLSIDES AND DEGRADED AREAS IN BRAZIL.
30
Aloísio Rodrigues Pereira
Paula Leão R. Pereira
Fernanda Leão R. Pereira
 Introduction of Vetiver Grass in Brazil.
 Restriction and Approval of the vetiver Grass at the
Brazilian Environmental agencies
 Plant nurseries producing Vetiver Grass in Brazil
 Application of the Vetiver Grass in works and projects of
engineering in Brazil
Belo Horizonte, 12 de setembro de 2013.
© Deflor, 2013
VETIVER SEEDLING PRODUCTION SYSTEM
Bare Roots
In Polybags
In Tubes
In Plástic tray
In Vegetative Strips
© Deflor, 2013
SEEDLING PRODUCTION NURSERY
Vetiver Admirers
© Deflor, 2013
EFFECTS OF VEGETATION ON SLOPES
STABILITY
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EFFECT ON VETIVER SLOPE STABILITY IN BRAZIL
VARIÁVEIS
INCLINAÇÃO
IDADE (ANOS)
< 30º
30 - 45º
>45º
ÂNGULO ATRITO (º)
FATOR DE SEGURANÇA (FS)
COM VETIVER
SEM VETIVER
2
4
6
7,80
6,76
5,95
8,93
7,95
7,31
10,00
9,01
8,70
3,30
2,91
2,60
24,60
33,90
36,20
19,30
Fonte: PEREIRA, A.R (2013)
© Deflor, 2013
EFFICIENCY IN HEAVY METAL REMOVAL BY ONE YEAR
OLD VETIVER PLANTS
EFICIÊNCIA DE REMOÇÃO (%)
ELEMENTO
FOLHA
CAULE
RAIZ
TOTAL
Cádmo
3,70
25,20
42,10
71,00
Cromo
3,94
38,70
51,36
94,00
Niquel
4,15
22,27
51,58
78,00
Chumbo
7,43
22,85
39,72
70,00
Zinco
4,60
37,78
50,62
93,00
Fonte: PEREIRA, A.R (2013)
© Deflor, 2013
Effects of vegetation on slope stability
© Deflor, 2013
REHABILITATION OF WATER COURSES
Landfill slope protection
Vetiver root
system
Established Vetiver barriers on slopes
Water course bank protection
© Deflor, 2013
VETIVER AND GABION IN PROTECTION OF
WATER COURSES
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VETIVER FOR BEACH PROTECTION IN
COASTAL ZONES
January 2010
Before
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COASTAL ZONES
January 2010
Before
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COASTAL ZONES
Three months later
Before
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COASTAL ZONES
Three years later
Before
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COASTAL ZONES
Six years later
April 2015
© Deflor, 2013
COASTAL ZONES
Six years later
April 2015
© Deflor, 2013
PROTECTION OF WATER COURSE BANKS
© Deflor, 2013
REHABILITATION OF WATER COURSE BANKS
SOLO ENVELOPADO VERDE
SOLO ENVELOPADO VERDE
IMPLANTAÇÃO ESTACAS VIVAS
BROTAÇÃO ESTACAS VIVAS
© Deflor, 2013
CASE STUDY
Dredging and ongoing protection of water quality with
use of Sediment retainers type Bermalonga®
© Deflor, 2013
CASE STUDY
© Deflor, 2013
CASE STUDY
© Deflor, 2013
BIOENGINEERING TECHNIQUES IN
EROSION CONTROL
Rehabilitation, protection and slope covering on railway line
Construção de drenagem
Revegetação com sementes e mudas
Acerto manual do terreno
Aplicação de Biomanta Antierosiva
Paliçadas
© Deflor, 2013
BIOENGINEERING TECHNIQUES IN
EROSION CONTROL
Rehabilitation, protection and slope covering on highway
November 2014
6 months later - April 2015
© Deflor, 2013
CASE STUDY
UHE - ITUMBIARA, GO.
Foto 1 –General view of erosion
Foto 3 – Detail of the interior of
erosion
Foto 2 – Details of erosion (inner walls)
Foto 4 –Mechanical earthwork at the
beginning of the walls of erosion
© Deflor, 2013
MECHANICAL EARTHWORKS
© Deflor, 2013
EROSION PROTECTION
© Deflor, 2013
EROSION PROTECTION
© Deflor, 2013
MECHANICAL EARTHWORKS
© Deflor, 2013
© Deflor, 2013
© Deflor, 2013
THANK YOU!
30
© Deflor, 2013

the uses of vetiver grass for stabilization of slope, hillsides and

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