integrated technology that uses sound engineering practices in conjuction with ecological principles to: design & construct vegetative living system to prevent erosion, stabilize shallow areas of soil instability, protect and enhance healthy system. uses live plant materials and flexible engineering techniques to eliminate environmental problems.

1. WEL-COME
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2. Bioengineering methods for soil
erosion control
Prepared by:
Santosh pathak
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3. Bio-engineering methods:
 integrated technology that uses sound engineering practices in conjuction with
ecological principles to:
 design & construct vegetative living system to prevent erosion,
 stabilize shallow areas of soil instability,
 protect and enhance healthy system.
 uses live plant materials and flexible engineering techniques to eliminate
environmental problems.
Different combination of methods can be used on cut and fill slopes along
roadways, landfill covers, spoil banks and streambanks.
On areas of existing or potential mass wasting, it may be best to use a bio
engineered system alone or in combination with soil bioengineering.
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4.  Construction of engineering structures are expensive, alternative cheap
option so in our cases there is a need of alternative conservation methods
which can be adopted with less expenditure, use locally available materials
and environmentally friendly……Bioengineering
 To control the surface erosion on fill slope, napier was grown in Shivapuri
Watershed road erosion control program.
 Many landslides affected areas like Krishna Bhir are rehabilitated by the uses
of bioengineering measures.
Advantages:
1) low cost and lower long term maintenance cost.
2) low maintenance of live plants after establishment.
3) environmental benefit of wildlife habitat.
4) water quality improvement.
5) compatibility with enviromentally sensitive sites.
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5. Soil conservation practices by Bio-engineering measures
Riprap
 stone pitching is done with vegetation inter-
planted between the stones; usually on gully
floor
 It is made from variety of rock types,
commonly granite or limestones, and
occasionally concrete rubble from building.
 used to stabilize streambanks, provide in –
stream channel stability and provide a stable
outlet.
 absorb and deflect the energy of waves
before they reach the defended structure.
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6.  The vegetation like nilkanda, asuro, saiiwan,
simali etc are grown.
 Riprap stone can be built at any time, but
planting should be done before monsoon.
 Slopes on which riprap is used to stabilize
streambanks should be no steeper than 1.5:1.
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7. Grass waterways
 Grass waterways is earth waterway planted with
grasses (such as . dubo, centipede grass) to control
soil erosion
 Waterways are important for removing surplus
water from terraced field and for erosion control.
They are constructed along the slope of area
(<20%).
 2-m to 48m wide
 The uses of grasses in this measures act as lining
material to control the problem of erosion caused
by turbulent runoff flow through the section.
 allows increasing soil cohesion and
roughness.(reduce K),
 also prevents the formation of rills and gullies.
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8. Advantages:
a) It carries large flow and make it suitable for large watershed.
b) Farm machineries can easily cross them.
c) After establishment of grasses, its maintenance become very easy.
Disadvantages:
a) It restricts the installation of the drainage outlet.
b) At few location the establishment of vegetation is being very
difficult.
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9. Fascine:
 A fascine is a rough bundle of brushwood or other
material used for strengthening an earthen structure, or
making a path across uneven or wet terrain.
 Typical uses are protecting the banks of stream from
erosion, covering marshy ground and so on. In the war
they are often used to create paths for tanks and other
vehicles across uneven terrain.
 Fascine spacing : 4m for < 30 degree slope; 2m for
30-45 degree slope.
 Trench 10-20 cm deep, 20 cm wide (may vary
according to site).
 For each fascine, there should be at least 4 but not
more than 8 cuttings.
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10. Jute netting
 This is a net made of jute that is laid and anchored
over straw or other mulch to protect the mulch
from wind and water damage.
 It reduces soil erosion and provides a good
environment for vegetative regrowth. Jute is a
biodegradable material that will eventually
decompose and is not a threat to the environment.
 This practices is often used on areas that may
erode near structures such as homes, roads, and
bridges.
 Jute can be applied alone( without mulch) as an
alternative to straw or wood mulches on flat sites
for dust control and seed germination enhancement.
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11. Procedure:
 Jute nets are placed on slopes or degraded
land with the help of the stakes.
 Seeds or cuttings can be placed inside.
 Natural regeneration takes place on time.
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12. Wattling
 Rows of fence of live cutting across the slope.
 Catches debris, slope modification.
 Phaledo, Bains, Dabdabe, Kavro,Khirro- as stakes.
Design:
 Long stakes: 100cm long, 4-6 cm diameter.
 Short stakes: 50 cm long, 3-4 cm diameter.
 Insert 100cm long stakes at intervals of about 1m,
insert two 50 cm long stakes in between the long
stakes.
 Place the vegetative cuttings between the stakes as
live fence(asuro, nilkanda, sajiwan, simali).
 Wattling spacing: 100-200cm on steep slopes
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13. THANK-YOU
HAVE A GOOD
DAY
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