Post on 07-Jul-2015
1
VETIVER VETIVER SYSTEMSYSTEM AS A SOLUTION AS A SOLUTION FORFOR EROSION AND SHALLOW FAILURE EROSION AND SHALLOW FAILURE
CONTROL OF ROAD SLOPECONTROL OF ROAD SLOPE
2
• 45% OF INDONESIAN AREA IS MOUNTAINOUS AND SENSITIVE TO LANDSLIDES AND EROSION
BACKGROUND
• EROSION CAUSED BY NATURAL FACTORS (SLOPE, RAINFALL, GEOLOGYCAL), AND HUMAN FACTORS
• GLOBAL WARMING AND CLIMATE CHANGE PHENOMENON CHALLENGE PUBLIC WORKS INFRASTRUCTURE DEVELOPMENT ON EROSION AND LANDSLIDE DISASTER.
3
• POLICY ON IMPLEMENTATION OF GREEN CONSTRUCTION BY HARMONIZE INFRASTRUCTURE AND BUILDING IN A WIDER NETWORK AND SCOPE, RELATED TO CLIMATE, NATURAL RESOURCES, ECONOMIC, SOCIAL AND CULTURE ASPECTS.
BACKGROUND
• VETIVER SYSTEM IS A GREEN CONSTRUCTION TECHNOLOGY
• UNIQUE CHARACTERISTICS OF VETIVER GRASS ARE DEEP ROOT (5M), PLANT DISEASE RESISTANT, SURVIVE IN ROCKY SOIL WITH HIGH ACIDITY LEVEL.
4
EROSION/LANDSLIDE PROBLEMS IN INDONESIAEROSION/LANDSLIDE PROBLEMS IN INDONESIA
GIVE IMPACT TO:•INFRASTRUCTURE•HUMAN, AND•ECONOMIC ASPECT
SLOPE AT SURABAYA-MADURA ROAD SECTION
SLOPE AT YETTI – ARSO, PAPUA ROAD SECTION
SLOPE AT JANAN –GEREJA ROAD SECTION
SLOPE AT SANTAN - BONTANG ROAD SECTION
5
EROSION
LOSSES• SAFETY• COMFORT• ENVIRONMENT
MOSTLY HAPPENED IN INDONESIAN
ROAD SLOPE
TECHNOLOGY IS NEEDED
EASY TO USELOW COST
ENVIRONMENTAL FRIENDLY
APPLICABLE
VEGETASION/ VETIVER GRASS
MECHANICAL
CHEMICAL
6
VETIVER GRASSVETIVER GRASS
KNOWN AS “AKAR WANGI” (Vetiveria zizanoides) OR “USAR” (Vetiver nigritana), VETIVER IS A KIND OF WONDER PLANT WITH MANY PECULIARITIES.
WORLDWIDE, VETIVER HAS BEEN USED FOR ECOLOGICAL AND LAND AND WATER FITOREMEDIATION (ENVIRONMENT REHABILITATION USING PLANT) PURPOSES
THE USAGE OF VETIVER IN INDONESIA NOWADAYS IS LIMITED TO PRODUCE “AROMATIC OIL” AND USE FOR EROSION CONTROL OF ROAD AND RIVER SLOPE
7
• MINING AREA REHABILITATION• SLOPE EROSION PREVENTION • LAND ABRATION BARRIER• SLOPE STABILIZATION• WASTE WATER POLUTION CONTROLING
(FOR EXAMPLE : IN PULP AND PAPER INDUSTRY, FERTILIZER INDUSTRY, ETC)
BENEFIT AND APPLICATION OF VETIVERBENEFIT AND APPLICATION OF VETIVER
8
VETIVER
MORPHOLOGY CHARACTERISTICS
ECOLOGY CHARACTERISTICS
PHISIOLOGY CHARACTERISTICS
TECHNICAL CHARACTERISTICS
CIVIL WORK CHARACTERISTICS
OTHER CHARACTERISTICS
VETIVER
9
MORPHOLOGY CHARACTERISTICS
DEEP AND MASSIVE ROOT SYSTEM, CAN PENETRATE UP TO 3-4 M IN THE FIRST YEAR
DENSE AND EXTENSIVE ROOT SYSTEM, CAN BIND SOIL, HARDLY TO UNPLUGGED AND RESISTENT TO DRY CONDITION
RIGID AND HARD TRUNK, HOLD UP TO GROUND WATER STREAM (0.6 – 0.8 M)
VETIVER FENCE WILL GROW UP TO 1M WITHIN FIRST THREE MONTHS AFTER SEEDING, UP TO 1.5M WITHIN FIRST FIVE MONTHS AFTER SEEDING AND ALREADY BECOME SLOPE STABILIZER
IF PLANTED CLOSE TO ONE ANOTHER FORMING TIGHT LINE/FENCE, IT WILL REDUCE RUNOFF VELOCITY, DIVERT WATER FLOW AND BECOME AN EFFECTIVE FILTER.
ROOT
SOURCE: PAUL TRUONG, 2004
10
ECOLOGY CHARACTERISTICS
PHISIOLOGY CHARACTERIST
WEEDING MUST BE DONE IN EARLY STAGE VETIVER GROWTH
DO NOT GROW ON SHADY CONDITION; VETIVER MUST EXPOSE TO DIRECT
SUNLIGTH SURVIVE IN EXTREME CONDITION;
RESIST TO DRYNESS, FLOOD, PUDDLE AND TEMPERATURE AROUND 14ºC - 5ºC
RESIST TO PH RANGE 3-10,5 RESIST TO SALINATE SOIL,
SOLIDATION, SULFATE ACID RESIST TO POISONOUS. ROOT CAN PENETRATE HARD SOIL
LAYER TO 15 CM DEPTH.
11
TENSILE STRENGTH : 75 MPA or 750 Kg/cm2
(±1/6 TENSILE STRENGTH OF MILD STEEL) SHEAR STRENGTH : 6-19 KPA/KG ROOT/M³ SOIL
(COMPARE TO TREE ROOT 3,2-3,7 KPA/KG ROOT/M³SOIL)
SHEAR STRENGTH IS USED TO HOLD MUD/SEDIMENT IN EROSION CONTROLING PROSES)
ROOT GROWS FAST: REDUCING GROUND WATER LEVEL, LOWERING PORE WATER PRESSURE, IMPROVING INFILTRATION AND REDUCING RUNOFF AND EROSION DEGREE
TECHNICAL CHARACTERISTICS
CIVIL WORK CHARACTERISTICS
HIGHEST STRENGTH LEVEL OF ALL TYPES OF GRASS
CAN LIVE IN SANDY, ROCKY AND SALINE SOIL CAN HOLD ON TO STREAM WATER = 0.028 M3/
SEC DENSE AND MASSIVE ROOT (UP TO 2-4 M) STRONG AND WEATHER RESISTANT BETTER IN AESTHETICS AND CO-EXIST WITH
ENDEMIC PLANTS EXPECTED COST 1/6 –1/8 OF CONSTRUCTION
COST
12
• VETIVER CAN HOLD WATER RUN-OFF DAN MATERIAL WITH ITS GRASS AND REDUCE VELOCITY AND SEDIMENTATION AT POINT A SO ITS HOLD UP AT POINT B
• WATER FLOW TROUGH LOWER SLOPE C• VETIVER ROOT (D) BIND SOIL DOWN TO 3 METER
DEPTH. • WITH DENSE AND DEEP PILLAR FORM AT THE
SOIL, ROOTS PREVENT EROSION AND LANSLIDE. VETIVER EFFECTIVELY IF PLANTED IN LINE FORM A FENCE
PRINCIPLES OF VETIVER TO HOLD UP EROSION
SOURCE : Rully. 2007
RUNOFF AND
MATERIAL EROSION
REDUCED RUNOFF AND MATERIAL
EROSION
RETAINED SEDIMENT LOCATION
VETIVER LINE/FENCE
VETIVER ROOT
LANDSLIDE AREATHICKNESS : 0-2M
13
VETIVER GRASS TECHNOLOGY APPLICATION BY Institute of Road Engineering (IRE)
• SEED AND SOIL TYPES TRIAL• ROOT GROWTH TRIAL• VETIVER GRASS SEEDING AT IRE
• SURABAYA – MADURA BRIDGE, EAST SECTION, EAST JAVA (2010)• BALIKPAPAN – SAMARINDA, LOA JANAN - GEREJA ROAD SECTION, EAST
KALIMANTAN (2010)• ARSO – YETTI ROAD SECTION,PAPUA (2010)
SMALL SCALE LABORATORY
FULL LABORATORY
• NAGREG ROAD SECTION, JAWA BARAT (2008)• CIPULARANG TOLL ROAD KM 95 DAN KM 100 ROAD SECTION, WEST JAVA (2009)
FIELD LABORATORY
14
SMALL SCALE LABORATORY EXPERIMENT AT IRE
ROOT GROWTH TRIAL
SEED AND SOIL TYPES TRIAL
SLOPE 45O, GRASS, PLACEMENT VARIATION ,
SILTY LAY LOAM
SOURCE: IRE, 2009 - 2010
15
VETIVER GRASS NURSERY AT IRE
AT PUSJATAN CAMPUS
AT SAMARINDA AT SURABAYA
BARE ROOT SLIPS POLIBAG
POLIBAGPOLIBAG
SOURCE: IRE, 2009 - 2010
16
FIELD LABORATORY AT NAGREG KM 43 - WEST JAVA
SLOPE 80O, AGE: 4 MONTHS
BEFORE TRIMMING
SOIL TYPE: CLAY,SLOPE HEIGTH VARIATION (7M)
SLOPE LENGTH (5M/TREATMENT)
SLOPE 80O, AGE: 4 MONTHSAFTER TRIMMING
SOURCE: IRE, 2009 - 2010
17
FIELD LABORATORY AT CIPULARANG TOLL ROAD, KM 95 ROAD SECTION, WEST JAVA
SLOPE 60O, AGE: 3 MONTHS
SLOPE 30O, AGE: 3 MONTHS
SLOPE 45O, AGE: 3 MONTHS
SOIL TYPE: SILTY CLAY,SLOPE HEIGTH VARIATION (3, 6, 9 M)
SLOPE LENGTH(5M/TREATMENT)
SOURCE: IRE, 2009 - 2010
18
FIELD LABORATORY AT CIPULARANG TOLL ROAD, KM 100 ROAD SECTION, WEST JAVA
SLOPE 60O, AGE: 3 MONTHS
SLOPE 30O, AGE: 3 MONTHS
SLOPE 45O, AGE: 3 MONTHS
SOIL TYPE: DUSTY CLAYSLOPE HEIGTH VARIATION (3, 6, 9 M)
SLOPE LENGTH(5M/TREATMENT),STABILITY INDEX: UNSTABLE
SOURCE: IRE, 2009 - 2010
19
FULL SCALE TRIAL AT SURABAYA – MADURA ROAD SECTION, EAST JAVA
BEFORE(EKSISTING)
WITH VETIVER TECHNOLOGY,
AGE 2,5 MONTHS
SLOPE LENGTH: 300 M, HEIGHT:14 M,GRANULAR: GRANULE
SOURCE: IRE, 2009 - 2010
1 MONTH
4 MONTH
REGULAR CUTTING (TRIMMING) AFTER 4
MONTH
20
FULL SCALE TRIAL AT LOA JANAN – GEREJA ROAD SECTION, EAST KALIMANTAN
BEFORE (EKSISTING)
WITH VETIVER TECHNOLOGY,
AGE: 2 MONTHS
SLOPE LENGTH:100 M, HEIGHT: 34 M,GRANULAR: KERSAI/GRANULE
SOURCE: IRE, 2009 - 2010
1 MONTH
4 MONTH
REGULAR CUTTING (TRIMMING) AFTER 4
MONTH
21
FULL SCALE TRIAL AT YETTI – ARSO ROAD SECTION, PAPUA
BEFORE (EKSISTING)
WITH VETIVER TECHNOLOGY
AGE: 1.5 MONTHS
SLOPE LENGTH: 300 M, HEIGHT: 12 M,STRUCTURELESS/MASSIVE
SOURCE:IRE, 2009 - 2010
22
• RESEARCH REPORT DOCUMENTS (2007-2010)• TRAINING MODULES (NURSERY, IMPLEMENTATION, AND
MAINTANANCE OF VETIVER SYSTEM) • TECHNICAL GUIDELINE ON SURFACE EROSION CONTROL
AND SHALLOW FAILURE PREVENTION OF ROAD SLOPE• DRAFT SPESIFICATION OF IMPLEMENTATION OF VETIVER
SYSTEM• DRAFT SPESIFICATION OF CHARACTERISTIC OF VETIVER
GRASS
R&D PRODUCTS BY IRE
INTERNATIONAL SEMINAR ON GREEN ROAD CONSTRUCTION AND WORKSHOP ON
VETIVER SYSTEM
Bandung 2nd – 4th November 2011
RELEVANT IRE’S CALENDAR YEAR 2011
24
CONCLUSION
VETIVER SYSTEM CAN BE USED EFFECTIVELY TO CONTROL SURFACE EROSION AND SHALLOW FAILURE OF ROAD SLOPE
VETIVER SYSTEM CAN BE USED EFFECTIVELY AT SLOPE 30O – 60O
25
RECOMENDATION
VETIVER SYSTEM COULD BE APPLIED BY ROAD AUTHORITIES TO COPE WITH EROSION AND SHALLOW FAILURE OF ROAD SLOPE
AT ROAD SLOPE > 60O, VETIVER TECHNOLOGY IS NOT RECOMMENDED TO APPLIED SOLELY(MUST COMBINED WITH MECHANICAL METHOD)
26
THANK YOUTHANK YOU