GWRL- An ISO 9001 2000 Company© 2011 GARWARE-WALL ROPES LTD. ALL RIGHTS RESERVED Innovative Technologies Building Trust APPLICATIONS OF GEO-SYNTHETICS.

GWRL- An ISO 9001 2000 Company © 2011 GARWARE-WALL ROPES LTD. ALL RIGHTS RESERVED

Innovative Technologies Building Trust

APPLICATIONS OF GEO-SYNTHETICS IN EROSION CONTROL

GARWARE – WALL ROPES LTD.Geo-synthetics Division


SOIL EROSION

Soil erosion is a natural process which occurs due to detachment and movement of top soil by the action of wind and flowing water

Natural turfing does not provide required superior performance

Erosion control measures: Garmat® on Slopes upto 45º Geocell on Slopes upto 80º


• High performance product specially engineered as surface protection treatment for slopes

• Garmat® is a composite geomat comprising a layer of bio-degradable mulching material sandwiched between two layers of polymer netting

GARMAT®

Garmat® Pre-cultivation on Garmat®


SPECIFICATIONS OF GARMAT®

PROPERTY SPECIFICATION OF GARMAT®

Top and bottom layers of polymer net

Material and structurePolymer netting comprising tensile elements of circular cross-section in two orthogonal direction with knotless joint

Aperture size 25 ( 4) mm x 25 ( 4) mm

Tensile strength ≥ 2.0 kN/m (in both directions)

UV Stability (Percent retention of tensile strength)

≥ 80% (500 hours exposure)

Type of joint Firm Joint

Middle layer of bio-degradable mulch

Material Coir fibre

Weight ≥ 250 gms/m2

Thickness ≥ 6.5 mm

Dimensions

Length 15 m (depending on site requirement)

Width 5 m (minimum)


ADVANTAGES OF GARMAT®

• Promotes growth of vegetation by retaining moisture and conditioning the soil

• Root system interwined with the net binds and confines the soil

• Results in higher root density of grass cover upto (4500 kg/ha) compared to ordinary turfing (typically 1500 kg/ha)

• Mulch in the Garmat® acts as porous filter to allow water while retaining soil

• Installation is simple and easier


POND 1-HINDUSTAN ZINC LIMITED, VIZAG, A.P.

Garmat® Installed on Embankment Slopes

View of Jarosite Pond with Garmat® Installed on Embankment Slopes


POND 2-HINDUSTAN ZINC LIMITED, VIZAG, A.P.

Garmat® Installed on Embankment Slopes

View of Jarosite Pond 2 with Garmat® Installed on Embankment Slopes


After installation of Garmat® on embankment slopes

MINERAL ENTERPRISES LTD, CHITRADURGA

Growing of vegetation on embankment slopes


BeforeBefore AfterAfter

MAHANADI COAL FIELDS, TALCHER, ORISSA


MAHANADI COAL FIELDS, TALCHER, ORISSA

Slope Surface Preparation for Installation of Garmat®

Garmat® Installed for Erosion control


UDHAMPUR - MUKTHESWAR SECTION, NORTHERN RAILWAY

Garmat® Installed on Slopes

After vegetation growth on slopes


KUNDLI - MANESAR HIGHWAY, HARYANA

Rain cuts on slope – before installation of Garmat®

Surface preparation in progress for installation of Garmat®Watering in progressCompaction of slopes in progress


KUNDLI - MANESAR HIGHWAY, HARYANA

Installation of Garmat® and soil placement in progress

After vegetation growth on embankment slope


GRIL NH - 24, EXPRESSWAY PROJECT, MORADABAD

Installation of Garmat® in progress After vegetation growth on embankment slope


GEOCELL Geocell is a lightweight, expandable cellular

confinement system which creates an erosion barrier or structural foundation

Effective erosion control measure on steep slopes


GEOCELL

Fill materials:- Soil (both cohesion and cohesionless)- Aggregates- Concrete


Access Roads/Railroad Ballast

Slope StabilizationErosion protection

Stream / channel protection

Retaining wall

APPLICATIONS OF GEOCELL


With GEOCELL Without GEOCELL

APPLICATIONS OF GEOCELL

Embankment Protection (flood)Erosion Control


SPECIFICATIONS OF GEOCELL

Cell density (cells/m2): 8.3, 12, 16.5, 21.7, 27.6, 34.3, 41.7

Cell height (mm): 50, 75, 100, 150, 200

Cell wall type: smooth, textured, perforated

Colors: black, tan, green and others

Perforations: percentages can be varied up to 16.5%


Tiru KulkarniVice President, Geosynthetics Division,

Garware-Wall Ropes Ltd.Plot No. 11, Block D-1, M.I.D.C. Chinchwad, Pune- 411019, India.

Phone: + 91-20-30780000, 30780432Fax: + 91-20-30780350.

Email : [email protected]@garwareropes.com

Website : www.garwareropes.com

THANK YOU

GWRL- An ISO 9001 2000 Company© 2011 GARWARE-WALL ROPES LTD. ALL RIGHTS RESERVED Innovative Technologies Building Trust APPLICATIONS OF GEO-SYNTHETICS.

Documents